1.
National Register of Historic Places
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The National Register of Historic Places is the United States federal governments official list of districts, sites, buildings, structures, and objects deemed worthy of preservation. The passage of the National Historic Preservation Act in 1966 established the National Register, of the more than one million properties on the National Register,80,000 are listed individually. The remainder are contributing resources within historic districts, each year approximately 30,000 properties are added to the National Register as part of districts or by individual listings. For most of its history the National Register has been administered by the National Park Service and its goals are to help property owners and interest groups, such as the National Trust for Historic Preservation, coordinate, identify, and protect historic sites in the United States. While National Register listings are mostly symbolic, their recognition of significance provides some financial incentive to owners of listed properties, protection of the property is not guaranteed. During the nomination process, the property is evaluated in terms of the four criteria for inclusion on the National Register of Historic Places, the application of those criteria has been the subject of criticism by academics of history and preservation, as well as the public and politicians. Occasionally, historic sites outside the proper, but associated with the United States are also listed. Properties can be nominated in a variety of forms, including individual properties, historic districts, the Register categorizes general listings into one of five types of properties, district, site, structure, building, or object. National Register Historic Districts are defined geographical areas consisting of contributing and non-contributing properties, some properties are added automatically to the National Register when they become administered by the National Park Service. These include National Historic Landmarks, National Historic Sites, National Historical Parks, National Military Parks/Battlefields, National Memorials, on October 15,1966, the Historic Preservation Act created the National Register of Historic Places and the corresponding State Historic Preservation Offices. Initially, the National Register consisted of the National Historic Landmarks designated before the Registers creation, approval of the act, which was amended in 1980 and 1992, represented the first time the United States had a broad-based historic preservation policy. To administer the newly created National Register of Historic Places, the National Park Service of the U. S. Department of the Interior, hartzog, Jr. established an administrative division named the Office of Archeology and Historic Preservation. Hartzog charged OAHP with creating the National Register program mandated by the 1966 law, ernest Connally was the Offices first director. Within OAHP new divisions were created to deal with the National Register, the first official Keeper of the Register was William J. Murtagh, an architectural historian. During the Registers earliest years in the late 1960s and early 1970s, organization was lax and SHPOs were small, understaffed, and underfunded. A few years later in 1979, the NPS history programs affiliated with both the U. S. National Parks system and the National Register were categorized formally into two Assistant Directorates. Established were the Assistant Directorate for Archeology and Historic Preservation and the Assistant Directorate for Park Historic Preservation, from 1978 until 1981, the main agency for the National Register was the Heritage Conservation and Recreation Service of the United States Department of the Interior. In February 1983, the two assistant directorates were merged to promote efficiency and recognize the interdependency of their programs, jerry L. Rogers was selected to direct this newly merged associate directorate
2.
Historic districts in the United States
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Buildings, structures, objects and sites within a historic district are normally divided into two categories, contributing and non-contributing. Districts greatly vary in size, some have hundreds of structures, the U. S. federal government designates historic districts through the United States Department of Interior under the auspices of the National Park Service. Federally designated historic districts are listed on the National Register of Historic Places, state-level historic districts may follow similar criteria or may require adherence to certain historic rehabilitation standards. Local historic district designation offers, by far, the most legal protection for historic properties because most land use decisions are made at the local level, local districts are generally administered by the county or municipal government. The first U. S. historic district was established in Charleston, South Carolina in 1931, Charleston city government designated an Old and Historic District by local ordinance and created a board of architectural review to oversee it. New Orleans followed in 1937, establishing the Vieux Carré Commission, other localities picked up on the concept, with the city of Philadelphia enacting its historic preservation ordinance in 1955. The Supreme Court case validated the protection of resources as an entirely permissible governmental goal. In 1966 the federal government created the National Register of Historic Places, conference of Mayors had stated Americans suffered from rootlessness. By the 1980s there were thousands of federally designated historic districts, Historic districts are generally two types of properties, contributing and non-contributing. In general, contributing properties are integral parts of the historic context, in addition to the two types of classification within historic districts, properties listed on the National Register of Historic Places are classified into five broad categories. They are, building, structure, site, district and object, all but the eponymous district category are also applied to historic districts listed on the National Register. A listing on the National Register of Historic Places is governmental acknowledgment of a historic district, however, the Register is an honorary status with some federal financial incentives. The National Register of Historic Places defines a historic district per U. S. federal law, a district may also comprise individual elements separated geographically but linked by association or history. Districts established under U. S. federal guidelines generally begin the process of designation through a nomination to the National Register of Historic Places, the National Register is the official recognition by the U. S. government of cultural resources worthy of preservation. While designation through the National Register does offer a district or property some protections, if the federal government is not involved, then the listing on the National Register provides the site, property or district no protections. If, however, company A was under federal contract the Smith House would be protected, a federal designation is little more than recognition by the government that the resource is worthy of preservation. Usually, the National Register does not list religious structures, moved structures, reconstructed structures, however, if a property falls into one of those categories and are integral parts of districts that do meet the criteria then an exception allowing their listing will be made. Historic district listings, like all National Register nominations, can be rejected on the basis of owner disapproval, in the case of historic districts, a majority of owners must object in order to nullify a nomination to the National Register of Historic Places
3.
Unincorporated area
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Occasionally, municipalities dissolve or disincorporate, which may happen if they become fiscally insolvent, and services become the responsibility of a higher administration. In some countries, such as in Brazil, Japan, France or the United Kingdom, unlike many other countries, Australia has only one level of local government immediately beneath state and territorial governments. A local government area often contains several towns and even entire cities, thus, aside from very sparsely populated areas and a few other special cases, almost all of Australia is part of an LGA. Unincorporated areas are often in locations, cover vast areas or have very small populations. Postal addresses in unincorporated areas, as in parts of Australia. Thus, there is any ambiguity regarding addresses in unincorporated areas. The Australian Capital Territory has no municipalities and is in some sense an unincorporated area, the territorial government is directly responsible for matters normally carried out by local government. The far west and north of New South Wales constitutes the Unincorporated Far West Region, a civil servant in the state capital manages such matters as are necessary. The second unincorporated area of state is Lord Howe Island. In the Northern Territory,1. 45% of the area and 4. In South Australia, 60% of the area is unincorporated and communities located within can receive services provided by a state agency. Firstly, the remote area that is unincorporated is the Abrolhos Islands. Secondly, the unincorporated areas are A-class reserves either in, or close to. In Canada, depending on the province, a settlement is one that does not have a municipal council that governs solely over the settlement. It is usually, but not always, part of a municipal government. This can range from hamlets to large urbanized areas that are similar in size to towns. In British Columbia, unincorporated settlements lie outside municipal boundaries entirely, Unincorporated settlements with a population of between 100 and 1,000 residents may have the status of designated place in Canadian census data. In some provinces, large tracts of undeveloped wilderness or rural country are unorganized areas that fall directly under the provincial jurisdiction
4.
Miami-Dade County, Florida
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Miami-Dade County is a county located in the southeastern part of the U. S. state of Florida. It is the southeasternmost county on the U. S. mainland, according to a 2015 census report, the county had a population of 2,693,117, making it the most populous county in Florida and the seventh-most populous county in the United States. It is also Floridas third-largest county in terms of land area, Miami-Dade County is included in the Miami-Fort Lauderdale-West Palm Beach, FL Metropolitan Statistical Area. The county is home to 34 incorporated cities and many unincorporated areas, southern Miami-Dade County includes the Redland and Homestead areas, which make up the agricultural economy of Miami. Agricultural Redland makes up one third of Miami-Dade Countys inhabited land area, and is sparsely populated. The western portion of the county extends into the Everglades National Park and is populated only by a Miccosukee tribal village, East of the mainland in Biscayne Bay is also Biscayne National Park and the Biscayne Bay Aquatic Preserves. The earliest evidence of Native American settlement in the Miami region came from about 12,000 years ago, the first inhabitants settled on the banks of the Miami River, with the main villages on the northern banks. The Tequesta Indians fished, hunted, and gathered the fruit and roots of plants for food and they buried the small bones of the deceased with the rest of the body, and put the larger bones in a box for the village people to see. The Tequesta are credited with making the Miami Circle, Juan Ponce de León was the first European to visit the area in 1513 by sailing into Biscayne Bay. His journal records that he reached Chequescha, a varianth of Tequesta and it is unknown whether he came ashore or made contact with the natives. Pedro Menéndez de Avilés and his men made the first recorded landing when they visited the Tequesta settlement in 1566 while looking for Avilés missing son, shipwrecked a year earlier. Spanish soldiers led by Father Francisco Villarreal built a Jesuit mission at the mouth of the Miami River a year later, after the Spaniards left, the Tequesta Indians were left to fend themselves from European-introduced diseases like smallpox. By 1711, the Tequesta sent a couple of local chiefs to Havana, Cuba, the Cubans sent two ships to help them, but Spanish illnesses struck and most of the Indians died. The first permanent European settlers arrived in the early 19th century, people came from the Bahamas to South Florida and the Keys to hunt for treasure from the ships that ran aground on the treacherous Great Florida Reef. Some accepted Spanish land offers along the Miami River, at about the same time, the Seminole Indians arrived, along with a group of runaway slaves. The area was affected by the Second Seminole War, during which Major William S. Harney led several raids against the Indians, most non-Indian residents were soldiers stationed at Fort Dallas. It was the most devastating Indian war in American history, causing almost a total loss of population in Miami, after the Second Seminole War ended in 1842, William English, re-established a plantation started by his uncle on the Miami River. He charted the “Village of Miami” on the bank of the Miami River
5.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
6.
Latvian American
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Latvian Americans are Americans who are of Latvian ancestry. According to the 2008 American Community Survey, there are 93,498 Americans of full or partial Latvian descent, around 1640, Latvians settled in Delaware and Pennsylvania, together with Scandinavian settlers. Later, in 1849, a number of Latvians were part of the thousands of people who immigrated to California looking for fortune during the Gold Rush, however, the first significant wave of Latvian settlers that immigrated to the United States came in 1888 to Boston. Some immigrants also established themselves in areas, although they were few. Although most Latvians settle in cities, in most of these the Latvians were also few, a new wave of Latvian immigration began around 1906, after the failure of their 1905 Revolution in Latvia. In 1917, many Latvian Revolutionaries went back to Latvia to work in the creation of a Bolshevik government, and in 1918, after World War II many Latvian refugees fleeing the Soviet Union, were established in other European countries. However, about half were eventually repatriated to Latvia, being the rest repatriated in Germany, England, Australia, Canada, United States and in other countries. From 1949 to 1951,40,000 Latvians immigrated to the United States with the help of the U. S. government and various social service and religious organizations. Although many of these refugees had been professionals in their country, in United States they often had jobs as farmhands, custodians, most Latvians settled in cities, such as New York, Boston, Philadelphia, and Chicago. As with the Old Latvians, the most of the new Latvians, could not create neighborhoods and had to rely on social events, from 1980 to 1990,1,006 Latvians arrived in the United States. Latvia became reestablished as an independent country in 1991, however, according to the 2000 census, a total of 87,564 people of Latvian descent live in the United States. There are larger populations in the states of California, New York, Illinois, Florida, many Latvian Americans have dual citizenship, which became available to Latvians who emigrated after the reestablishment of independence. Also, many travel to Latvia and provide financial support. Some Latvian Americans have been elected to the Saeima, or Parliament, thus, in 1911 only two individuals had obtained American university degrees. The majority of Latvians emigrants to the United States after World War II were university graduates, many were academics or belonged to intelligentsia. Most Latvian Americans speak English, while Latvian is basically the language spoken by American Latvians of the first generation due to intermarriage, as for religion, although most Latvians Americans are Lutherans, there are also small Catholic communities, Represented by the American Latvian Catholic Association. There is also a sizable American-Latvian Jewish community, former Senior Attorney AT&T, and influential CAB attorney. Famous for his score in the movies such as Tootsie
7.
Edward Leedskalnin
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Leedskalnin was also known for developing theories of magnetism. Edward Leedskalnin was born on January 12,1887 in Stāmeriena parish, little is known of his childhood, aside from the fact that his parents were not wealthy, he received only a fourth-grade formal education. Edward was a boy who often spent time reading books. It was suggested that he learned stonemasonry from his father and practiced this craft in Latvia after coming of age, at the age of 26 he was engaged to marry Agnes Scuffs who was ten years younger. However, the girl who Leedskalnin later referred to as his Sweet Sixteen broke the engagement, on April 7,1912 Leedskalnin arrived in New York City. After looking for work at the East Coast till August, he relocated to the Pacific Northwest. On June 5,1917 he filled in his registration in Oregon stating that he was self-employed and engaged in ax-handle manufacturing. The 1920 census data reveal that he resided in Reedsport, Oregon, on February 27,1923 The Homestead Enterprise newspaper published a notice that E. Leedskalnin a Californian has purchased an acre of the R. L. Moser homestead and is planning to erect a home soon. Over the next 20 years, Leedskalnin constructed a structure that he called Rock Gate and dedicated, in his own words. He used various basic tools available under his modest means including salvaged timber, first, he built a house out of limestone blocks and wood, then he gradually constructed a stone structure for which he is now famous. Despite his reserved personality, he opened the Coral Castle to the public. On November 9,1951 he checked himself into Jackson Memorial Hospital in Miami, apparently, Leedskalnin suffered a stroke either before he left for the hospital or at the hospital. He died twenty-eight days later of pyelonephritis at the age of 64 and his death certificate noted that his death was a result of uremia, failure of kidneys, as a result of the infection and abscess. The Coral Castle During his lifetime Leedskalnin published five pamphlets on various subjects, the Author In the first section, Leedskalnin vents his anger at his Sweet Sixteen, arguing that girls should be kept pure, and that boys are primarily a soiling influence upon them. On page 4 of A Book in Every Home, Leedskalnin writes, Everything we do should be for good purpose. When a girl is sixteen or seventeen years old, she is as good as she ever will be, but when a boy is sixteen years old, he is then fresher than in all his stages of development. He is then not big enough to work but he is too big to be kept in a nursery, now I will tell you about soiling. The second section continues along the theme of education, with several aphorisms aimed at parents regarding the proper way to raise children
8.
Homestead, Florida
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Homestead is a city within Miami-Dade County in the U. S. state of Florida, between Biscayne National Park to the east and Everglades National Park to the west. Homestead is primarily a Miami suburb and an agricultural area. It is a city of the Miami metropolitan area, which was home to an estimated 6,012,331 people at the 2015 census. Homestead was incorporated in 1913 and is the second oldest city in Miami-Dade County next to the city of Miami and it is located approximately 35 miles southwest of Miami, and 25 miles northwest of Key Largo. The name originates from when the Florida East Coast Railway extension to Key West was being built, the population was 60,512 at the 2010 census. Homestead and neighboring South Miami-Dade County communities bore the brunt of Category 5 Hurricane Andrew on August 24,1992, the city of Homestead is located near the southern terminus of the Homestead Extension of Floridas Turnpike where it ends at its junction with U. S.1. Homestead is immediately north and east of Florida City, and these two cities comprise the greater Homestead-Florida City area, some of the notable unincorporated communities in the area are Redland, Leisure City, Naranja, and Princeton. Its race track is the finale of the Monster Energy NASCAR Cup Series as well as the two minor championships of NASCAR. Homestead is located at 25°28′16″N 80°28′5″W, according to the United States Census Bureau, the city has a total area of 14.4 square miles. 14.3 square miles of it is land and 0.1 square miles of it is water. At its greatest north-south points – along SW 137th Avenue – its city limits extend only 4 miles – from SW 288th Street at the end to SW 352nd Street at the south end. At its greatest east-west points – along SW 328th Street – its city limits extend 6 miles – from SW 132nd Avenue at the east end to SW 192nd Avenue at the west end. It is at this point at the end that Homestead. A noteworthy tourist attraction within Leisure City is Coral Castle, built by a lover, Edward Leedskalnin. The Fruit and Spice Park is also of interest, Homestead experiences a tropical monsoon climate that borders on a tropical savanna climate. Summers are hot and humid and high temperatures average between 88° and 92 °F, winters are mild, but average cooler than nearby coastal areas. The all-time record high temperature is 100 °F, on 21 July 1942, lows in summer average between 70° and 75 °F, with low temperatures in all times of year averaging 5–15 degrees cooler than coastal Miami, mainly because of its inland and rural location. In winter, the area sees cold fronts bring cold weather for short periods from November to March, the lowest temperature ever recorded is 26 °F, on 13 December 1934, which was recorded at Homestead Air Force Base, some 10 miles east of the town
9.
Leisure City, Florida
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Leisure City is a census-designated place in Miami-Dade County, Florida, United States. The population was 22,152 at the 2000 census, Leisure City is most notable for housing the Coral Castle Museum within its official boundaries. Leisure City is located at 25°29′39″N 80°26′10″W, according to the United States Census Bureau, the CDP has a total area of 3.4 square miles, of which,3.4 square miles of it is land and 0.04 square miles of it is water. Leisure City borders the communities of Naranja, Homestead, and Redland, as of the census of 2000, there were 22,152 people,6,063 households, and 5,044 families residing in the CDP. The population density was 6,490.0 people per square mile, there were 6,615 housing units at an average density of 1,938. 0/sq mi. The racial makeup of the CDP was 65. 03% White 18. 00% African American,0. 20% Native American,0. 84% Asian,0. 03% Pacific Islander,11. 42% from other races, and 4. 48% from two or more races. Hispanic or Latino of any race were 65. 30% of the population,12. 7% of all households were made up of individuals and 4. 3% had someone living alone who was 65 years of age or older. The average household size was 3.65 and the family size was 3.94. In the CDP, the population was out with 36. 2% under the age of 18,10. 9% from 18 to 24,30. 1% from 25 to 44,16. 5% from 45 to 64. The median age was 27 years, for every 100 females there were 101.5 males. For every 100 females age 18 and over, there were 98.1 males, the median income for a household in the CDP was $29,091, and the median income for a family was $29,277. Males had an income of $22,320 versus $18,619 for females. The per capita income for the CDP was $9,966, about 22. 4% of families and 25. 0% of the population were below the poverty line, including 33. 3% of those under age 18 and 18. 3% of those age 65 or over. As of 2000, Leisure City had the twenty-ninth highest percentage of Cuban residents in the US, Leisure City is a part of the Miami-Dade County Public Schools. Leisure City is served by the Leisure City K-8, Homestead High School, the Köppen Climate Classification sub-type for this climate is Aw
10.
Megalith
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A megalith is a large stone that has been used to construct a structure or monument, either alone or together with other stones. The word megalithic describes structures made of large stones without the use of mortar or concrete. For later periods, the monolith, with an overlapping meaning, is more likely to be used. The word megalith comes from the Ancient Greek μέγας and λίθος, megalith also denotes an item consisting of rock hewn in definite shapes for special purposes. It has been used to describe buildings built by people from parts of the world living in many different periods. A variety of stones are seen as megaliths, with the most widely known megaliths not being sepulchral. The construction of these took place mainly in the Neolithic and continued into the Chalcolithic. At a number of sites in eastern Turkey, large ceremonial complexes from the 9th millennium BC have been discovered and they belong to the incipient phases of agriculture and animal husbandry. Large circular structures involving carved megalithic orthostats are a feature, e. g. at Nevalı Çori. Although these structures are the most ancient megalithic structures known so far, at Göbekli Tepe, four stone circles have been excavated from an estimated 20. Some measure up to 30 metres across, as well as human figures, the stones carry a variety of carved reliefs depicting boars, foxes, lions, birds, snakes and scorpions. Dolmens and standing stones have been found in areas of the Middle East starting at the Turkish border in the north of Syria close to Aleppo. They can be encountered in Lebanon, Syria, Iran, Israel, Jordan, the largest concentration can be found in southern Syria and along the Jordan Rift Valley, however they are being threatened with destruction. They date from the late Chalcolithic/Early Bronze Age, megaliths have also been found on Kharg Island and pirazmian in Iran, at Barda Balka in Iraq, and at Jaintapur in Bangladesh. A semicircular arrangement of megaliths was found in Israel at Atlit Yam and it is a very early example, dating from the 7th millennium BC. The most concentrated occurrence of dolmens in particular is in an area on both sides of the Jordan Rift Valley, with greater predominance on the eastern side. They occur first and foremost on the Golan Heights, the Hauran, and in Jordan, in Saudi Arabia, only very few dolmen have been identified so far in the Hejaz. They seem, however, to re-emerge in Yemen in small numbers, the standing stone has a very ancient tradition in the Middle East, dating back from Mesopotamian times
11.
Limestone
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Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate, about 10% of sedimentary rocks are limestones. The solubility of limestone in water and weak acid solutions leads to karst landscapes, most cave systems are through limestone bedrock. The first geologist to distinguish limestone from dolomite was Belsazar Hacquet in 1778, like most other sedimentary rocks, most limestone is composed of grains. Most grains in limestone are skeletal fragments of organisms such as coral or foraminifera. Other carbonate grains comprising limestones are ooids, peloids, intraclasts and these organisms secrete shells made of aragonite or calcite, and leave these shells behind when they die. Limestone often contains variable amounts of silica in the form of chert or siliceous skeletal fragment, some limestones do not consist of grains at all, and are formed completely by the chemical precipitation of calcite or aragonite, i. e. travertine. Secondary calcite may be deposited by supersaturated meteoric waters and this produces speleothems, such as stalagmites and stalactites. Another form taken by calcite is oolitic limestone, which can be recognized by its granular appearance, the primary source of the calcite in limestone is most commonly marine organisms. Some of these organisms can construct mounds of rock known as reefs, below about 3,000 meters, water pressure and temperature conditions cause the dissolution of calcite to increase nonlinearly, so limestone typically does not form in deeper waters. Limestones may also form in lacustrine and evaporite depositional environments, calcite can be dissolved or precipitated by groundwater, depending on several factors, including the water temperature, pH, and dissolved ion concentrations. Calcite exhibits a characteristic called retrograde solubility, in which it becomes less soluble in water as the temperature increases. Impurities will cause limestones to exhibit different colors, especially with weathered surfaces, Limestone may be crystalline, clastic, granular, or massive, depending on the method of formation. Crystals of calcite, quartz, dolomite or barite may line small cavities in the rock, when conditions are right for precipitation, calcite forms mineral coatings that cement the existing rock grains together, or it can fill fractures. Travertine is a banded, compact variety of limestone formed along streams, particularly there are waterfalls. Calcium carbonate is deposited where evaporation of the leaves a solution supersaturated with the chemical constituents of calcite. Tufa, a porous or cellular variety of travertine, is found near waterfalls, coquina is a poorly consolidated limestone composed of pieces of coral or shells. During regional metamorphism that occurs during the building process, limestone recrystallizes into marble
12.
Coral
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Corals are marine invertebrates in the class Anthozoa of phylum Cnidaria. They typically live in colonies of many identical individual polyps. The group includes the important reef builders that inhabit tropical oceans, a coral group is a colony of myriad genetically identical polyps. Each polyp is an animal typically only a few millimeters in diameter. A set of tentacles surround a central mouth opening, an exoskeleton is excreted near the base. Over many generations, the colony creates a large skeleton that is characteristic of the species. Individual heads grow by reproduction of polyps. Corals also breed sexually by spawning, polyps of the same species release gametes simultaneously over a period of one to several nights around a full moon and these are commonly known as zooxanthellae and the corals that contain them are zooxanthellate corals. Such corals require sunlight and grow in clear, shallow water, other corals do not rely on zooxanthellae and can live in much deeper water, with the cold-water genus Lophelia surviving as deep as 3,000 metres. Some have been found on the Darwin Mounds, north-west of Cape Wrath, Corals have also been found as far north as off the coast of Washington State and the Aleutian Islands. In his Scala Naturae, Aristotle classified corals as zoophyta, animals that had characteristics of plants and were therefore hypothetically in between animals and plants, the Persian polymath Al-Biruni classified sponges and corals as animals, arguing that they respond to touch. The phylogeny of Anthozoans is not clearly understood and a number of different models have been proposed, within the Hexacorallia, the sea anemones, coral anemones and stony corals may constitute a monophyletic grouping united by their eight-fold symmetry and cnidocyte trait. The Octocorallia appears to be monophyletic, and primitive members of this group may have been stolonate, the cladogram presented here comes from a 2014 study by Stampar et al. which was based on the divergence of mitochondrial DNA within the group and on nuclear markers. Corals are classified in the class Anthozoa of the phylum Cnidaria and they are divided into three subclasses, Hexacorallia, Octocorallia, and Ceriantharia. The Hexacorallia include the stony corals, the sea anemones and the zoanthids and these groups have polyps that generally have 6-fold symmetry. The Octocorallia include blue coral, soft corals, sea pens and these groups have polyps with 8-fold symmetry, each polyp having eight tentacles and eight mesenteries. Fire corals are not true corals, being in the order Anthomedusa of the class Hydrozoa, Corals are sessile animals in the class Anthozoa and differ from most other cnidarians in not having a medusa stage in their life cycle. The body unit of the animal is a polyp, most corals are colonial, the initial polyp budding to produce another and the colony gradually developing from this small start
13.
Latvia
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Latvia, officially the Republic of Latvia, is a country in the Baltic region of Northern Europe, one of the three Baltic states. It is bordered by Estonia to the north, Lithuania to the south, Russia to the east, Latvia has 1,957,200 inhabitants and a territory of 64,589 km2. The country has a seasonal climate. Latvia is a parliamentary republic established in 1918. The capital city is Riga, the European Capital of Culture 2014, Latvia is a unitary state, divided into 119 administrative divisions, of which 110 are municipalities and 9 are cities. Latvians and Livs are the people of Latvia. Latvian and Lithuanian are the two surviving Baltic languages. Despite foreign rule from the 13th to 20th centuries, the Latvian nation maintained its identity throughout the generations via the language, Latvia and Estonia share a long common history. Until World War II, Latvia also had significant minorities of ethnic Germans, Latvia is historically predominantly Protestant Lutheran, except for the Latgale region in the southeast, which has historically been predominantly Roman Catholic. The Russian population has brought a significant portion of Eastern Orthodox Christians. The Republic of Latvia was founded on 18 November 1918, however, its de facto independence was interrupted at the outset of World War II. The peaceful Singing Revolution, starting in 1987, called for Baltic emancipation of Soviet rule and it ended with the Declaration on the Restoration of Independence of the Republic of Latvia on 4 May 1990, and restoring de facto independence on 21 August 1991. Latvia is a democratic and developed country and member of the European Union, NATO, the Council of Europe, the United Nations, CBSS, the IMF, NB8, NIB, OECD, OSCE, and WTO. For 2014, Latvia was listed 46th on the Human Development Index and it used the Latvian lats as its currency until it was replaced by the euro on 1 January 2014. The name Latvija is derived from the name of the ancient Latgalians, one of four Indo-European Baltic tribes, henry of Latvia coined the Latinisations of the countrys name, Lettigallia and Lethia, both derived from the Latgalians. The terms inspired the variations on the name in Romance languages from Letonia. Around 3000 BC, the ancestors of the Latvian people settled on the eastern coast of the Baltic Sea. The Balts established trade routes to Rome and Byzantium, trading local amber for precious metals, by 900 AD, four distinct Baltic tribes inhabited Latvia, Curonians, Latgalians, Selonians, Semigallians, as well as the Livonians speaking a Finnic language
14.
United States
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Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east, the state of Hawaii is an archipelago in the mid-Pacific Ocean. The U. S. territories are scattered about the Pacific Ocean, the geography, climate and wildlife of the country are extremely diverse. At 3.8 million square miles and with over 324 million people, the United States is the worlds third- or fourth-largest country by area, third-largest by land area. It is one of the worlds most ethnically diverse and multicultural nations, paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago. European colonization began in the 16th century, the United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the following the Seven Years War led to the American Revolution. On July 4,1776, during the course of the American Revolutionary War, the war ended in 1783 with recognition of the independence of the United States by Great Britain, representing the first successful war of independence against a European power. The current constitution was adopted in 1788, after the Articles of Confederation, the first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties. During the second half of the 19th century, the American Civil War led to the end of slavery in the country. By the end of century, the United States extended into the Pacific Ocean. The Spanish–American War and World War I confirmed the status as a global military power. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the sole superpower. The U. S. is a member of the United Nations, World Bank, International Monetary Fund, Organization of American States. The United States is a developed country, with the worlds largest economy by nominal GDP. It ranks highly in several measures of performance, including average wage, human development, per capita GDP. While the U. S. economy is considered post-industrial, characterized by the dominance of services and knowledge economy, the United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations. In 1507, the German cartographer Martin Waldseemüller produced a map on which he named the lands of the Western Hemisphere America after the Italian explorer and cartographer Amerigo Vespucci
15.
Magnet therapy
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Magnet therapy, magnetic therapy, or magnotherapy is a pseudoscientific alternative medicine practice involving the use of static magnetic fields. Practitioners claim that certain parts of the body to magnetostatic fields produced by permanent magnets has beneficial health effects. These physical and biological claims are unproven and no effects on health or healing have been established, magnet therapy is the application of the magnetic field of electromagnetic devices or permanent static magnets to the body for purported health benefits. Some believers assign different effects based on the orientation of the magnet, under the laws of physics, application is usually performed by the patient. Perhaps the most common suggested mechanism is that magnets might improve blood flow in underlying tissues, a 1991 study on humans of static field strengths up to 1 T found no effect on local blood flow. Some practitioners claim that the magnets can restore the bodys hypothetical electromagnetic energy balance, even in the magnetic fields used in magnetic resonance imaging, which are many times stronger, none of the claimed effects are observed. If the body were meaningfully affected by the magnets used in magnet therapy. Several studies have been conducted in recent years to investigate what role, if any, static magnetic fields may play in health, incomplete or insufficient blinding tends to exaggerate treatment effects, particularly where any such effects are small. Health claims regarding longevity and cancer treatment are implausible and unsupported by any research, more mundane health claims, most commonly about anecdotal pain relief, also lack any credible proposed mechanism and clinical research is not promising. Magnet therapy has been promoted as a treatment for cancer and other diseases, according to the National Center for Complementary and Integrative Health, studies of magnetic jewelry haven’t shown demonstrable effects on pain, nerve function, cell growth or blood flow. Both reviews reported that small sizes, inadequate randomization, and difficulty with allocation concealment all tend to bias studies positively. The worldwide magnet therapy industry totals sales of over a billion dollars per year, a 2002 U. S. National Science Foundation report on public attitudes and understanding of science noted that magnet therapy is not at all scientific. A number of vendors make unsupported claims about magnet therapy by using pseudoscientific, such claims are unsupported by the results of scientific and clinical studies. Marketing of any therapy as effective treatment for any condition is heavily restricted by law in many jurisdictions unless all such claims are scientifically validated. In the United States, for example, U. S. Food and Drug Administration regulations prohibit marketing any magnet therapy product using medical claims, by Cecil Adams — The Straight Dope Magnetic Therapy, Plausible Attraction
16.
Hydrogen
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Hydrogen is a chemical element with chemical symbol H and atomic number 1. With a standard weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form is the most abundant chemical substance in the Universe, non-remnant stars are mainly composed of hydrogen in the plasma state. The most common isotope of hydrogen, termed protium, has one proton, the universal emergence of atomic hydrogen first occurred during the recombination epoch. At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, since hydrogen readily forms covalent compounds with most nonmetallic elements, most of the hydrogen on Earth exists in molecular forms such as water or organic compounds. Hydrogen plays an important role in acid–base reactions because most acid-base reactions involve the exchange of protons between soluble molecules. In ionic compounds, hydrogen can take the form of a charge when it is known as a hydride. The hydrogen cation is written as though composed of a bare proton, Hydrogen gas was first artificially produced in the early 16th century by the reaction of acids on metals. Industrial production is mainly from steam reforming natural gas, and less often from more energy-intensive methods such as the electrolysis of water. Most hydrogen is used near the site of its production, the two largest uses being fossil fuel processing and ammonia production, mostly for the fertilizer market, Hydrogen is a concern in metallurgy as it can embrittle many metals, complicating the design of pipelines and storage tanks. Hydrogen gas is flammable and will burn in air at a very wide range of concentrations between 4% and 75% by volume. The enthalpy of combustion is −286 kJ/mol,2 H2 + O2 →2 H2O +572 kJ Hydrogen gas forms explosive mixtures with air in concentrations from 4–74%, the explosive reactions may be triggered by spark, heat, or sunlight. The hydrogen autoignition temperature, the temperature of spontaneous ignition in air, is 500 °C, the detection of a burning hydrogen leak may require a flame detector, such leaks can be very dangerous. Hydrogen flames in other conditions are blue, resembling blue natural gas flames, the destruction of the Hindenburg airship was a notorious example of hydrogen combustion and the cause is still debated. The visible orange flames in that incident were the result of a mixture of hydrogen to oxygen combined with carbon compounds from the airship skin. H2 reacts with every oxidizing element, the ground state energy level of the electron in a hydrogen atom is −13.6 eV, which is equivalent to an ultraviolet photon of roughly 91 nm wavelength. The energy levels of hydrogen can be calculated fairly accurately using the Bohr model of the atom, however, the atomic electron and proton are held together by electromagnetic force, while planets and celestial objects are held by gravity. The most complicated treatments allow for the effects of special relativity
17.
Perpetual motion
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Perpetual motion is motion of bodies that continues indefinitely. A perpetual motion machine is a machine that can do work indefinitely without an energy source. This kind of machine is impossible, as it would violate the first or second law of thermodynamics and these laws of thermodynamics apply even at very grand scales. Thus, machines that extract energy from finite sources will not operate indefinitely, because they are driven by the energy stored in the source, a common example is devices powered by ocean currents, whose energy is ultimately derived from the Sun, which itself will eventually burn out. Machines powered by more obscure sources have proposed, but are subject to the same inescapable laws. The history of perpetual motion machines dates back to the Middle Ages, for millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern theories of thermodynamics has shown that they are impossible. Despite this, many attempts have been made to such machines. Modern designers and proponents often use other terms, such as over unity, there is a scientific consensus that perpetual motion in an isolated system violates either the first law of thermodynamics, the second law of thermodynamics, or both. The first law of thermodynamics is a version of the law of conservation of energy, in other words, In any isolated system, one cannot create new energy The output work power of heat engines is always smaller than the input heating power. The rest of the energy supplied is wasted as heat to the ambient surroundings. The efficiency has a maximum, given by the Carnot efficiency and it is always lower than one. The efficiency of heat engines is even lower than the Carnot efficiency due to irreversibility arising from the speed of processes. Statements 2 and 3 apply to heat engines, other types of engines which convert e. g. mechanical into electromagnetic energy, cannot operate with 100% efficiency, because it impossible to design any system that is free of energy dissipation. By way of example, clocks and other machines, such as Coxs timepiece, have been designed to run on the differences in barometric pressure or temperature between night and day. These machines have a source of energy, albeit one which is not readily apparent so that they seem to violate the laws of thermodynamics. Even machines which extract energy from long-lived sources - such as ocean currents - will run down when their energy sources inevitably do and they are not perpetual motion machines because they are consuming energy from an external source and are not isolated systems. It thus violates the first law of thermodynamics, the law of conservation of energy, a perpetual motion machine of the second kind is a machine which spontaneously converts thermal energy into mechanical work. When the thermal energy is equivalent to the work done, this does not violate the law of conservation of energy, however, it does violate the more subtle second law of thermodynamics
18.
Florida City, Florida
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Florida City is a city in Miami-Dade County, Florida, United States and is the southernmost municipality in the South Florida metropolitan area. Florida City is primarily a Miami suburb and an agricultural area. The city lies to the south and west of, and is contiguous with, both cities suffered catastrophic damage in August 1992, when Hurricane Andrew struck South Florida. The city originated as a promotion named Detroit. There were no buildings in the area when the first thirty families arrived in 1910, the name was changed to Florida City when the town incorporated in 1914. It has a historic area, but much of the city is hotels. The city is at the end of the only road running through the Everglades National Park. Florida City is the southernmost city in the United States which is not on an island and it is also the last stop on the mainland north of the Florida Keys. The southern terminus of the Homestead Extension of Floridas Turnpike where it ends at its junction with U. S.1 is located in Florida City, Homestead is immediately north and east of Florida City, and these two cities comprise the greater Homestead-Florida City area. Some of the unincorporated communities in the area are Redland, Leisure City, Naranja. Florida City is situated atop a limestone ridge called the Miami Rock Ridge that extends south from present day North Miami Beach to a location in Everglades National Park. The ridge, consisting of Miami limestone, serves as the ground within the community. The ridge extended from northeast to southwest across the city, the old location of the Florida East Coast Railway track marks the approximate boundary of the location of the limestone ridge south of Davis Parkway. The range of elevation of the ridge is from 5 to 8 feet above sea level, prior to settlement, the ridge was vegetated by South Florida Slash Pine trees, which were alternatively known as Dade County Pine. These pine rocklands were crushed by equipment and converted to farmland during the 1900s, East of the natural ridge was a broad area of marshlands surrounding the area. Old timers of Florida City called these coastal glades the East Glade and this was an extension of Everglades that extended from areas west and south of Florida City to its east. East of the East Glade, marshlands gave way to mangrove swamp prior to reaching Biscayne Bay, soils in the East Glade primarily consisted of a limey soil called Biscayne Marl. Development schemes in the East Glade led to the construction of canals in the early 1900s and this led to a lowering of water tables
19.
Everglades
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The Everglades is a natural region of tropical wetlands in the southern portion of the U. S. state of Florida, comprising the southern half of a large drainage basin and part of the neotropic ecozone. The system begins near Orlando with the Kissimmee River, which discharges into the vast but shallow Lake Okeechobee. Water leaving the lake in the wet season forms a slow-moving river 60 miles wide, the Everglades experience a wide range of weather patterns, from frequent flooding in the wet season to drought in the dry season. Human habitation in the portion of the Florida peninsula dates to 15,000 years ago. Before European colonization, the region was dominated by the native Calusa, with Spanish colonization, both tribes declined gradually during the following two centuries. The Seminole formed from mostly Creek people who had been warring to the North, they assimilated other peoples and created a new culture. After being forced from northern Florida into the Everglades during the Seminole Wars of the early 19th century, migrants to the region who wanted to develop plantations first proposed draining the Everglades in 1848, but no work of this type was attempted until 1882. Canals were constructed throughout the first half of the 20th century, in 1947, Congress formed the Central and Southern Florida Flood Control Project, which built 1,400 miles of canals, levees, and water control devices. The Miami metropolitan area grew substantially at this time and Everglades water was diverted to cities, portions of the Everglades were transformed into farmland, where the primary crop was sugarcane. Approximately 50 percent of the original Everglades has been developed as agricultural or urban areas, following this period of rapid development and environmental degradation, the ecosystem began to receive notable attention from conservation groups in the 1970s. Internationally, UNESCO and the Ramsar Convention designated the Everglades a Wetland Area of Global Importance, the construction of a large airport 6 miles north of Everglades National Park was blocked when an environmental study found that it would severely damage the South Florida ecosystem. With heightened awareness and appreciation of the region, restoration began in the 1980s with the removal of a canal that had straightened the Kissimmee River, however, development and sustainability concerns have remained pertinent in the region. The deterioration of the Everglades, including water quality in Lake Okeechobee, was linked to the diminishing quality of life in South Floridas urban areas. In 2000 the Comprehensive Everglades Restoration Plan was approved by Congress to combat these problems, to date, it is the most expensive and comprehensive environmental restoration attempt in history, but its implementation has faced political complications. The first written record of the Everglades was on Spanish maps made by cartographers who had not seen the land and they named the unknown area between the Gulf and Atlantic coasts of Florida Laguna del Espíritu Santo. The area was featured on maps for decades without having been explored, British surveyor John Gerard de Brahm, who mapped the coast of Florida in 1773, called the area River Glades. Both Marjory Stoneman Douglas and linguist Wallace McMullen suggest that cartographers substituted Ever for River, the name Everglades first appeared on a map in 1823, although it was also spelled as Ever Glades as late as 1851. The Seminole call it Pa-hay-okee, meaning Grassy Water, the region was labeled Pa-hai-okee on an American military map from 1839, although it had earlier been called Ever Glades throughout the Second Seminole War
20.
Miami
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Miami is a seaport city at the southeastern corner of the U. S. state of Florida and its Atlantic coast. According to the U. S. Census Bureau, Miamis metro area is the eighth-most populous, Miami is a major center, and a leader in finance, commerce, culture, media, entertainment, the arts, and international trade. In 2012, Miami was classified as an Alpha−World City in the World Cities Study Groups inventory, in 2010, Miami ranked seventh in the United States in terms of finance, commerce, culture, entertainment, fashion, education, and other sectors. It ranked 33rd among global cities, in 2008, Forbes magazine ranked Miami Americas Cleanest City, for its year-round good air quality, vast green spaces, clean drinking water, clean streets, and citywide recycling programs. According to a 2009 UBS study of 73 world cities, Miami was ranked as the richest city in the United States, Miami is nicknamed the Capital of Latin America and is the largest city with a Cuban-American plurality. Miami has the third tallest skyline in the U. S. with over 300 high-rises, Downtown Miami is home to the largest concentration of international banks in the United States, and many large national and international companies. The Civic Center is a center for hospitals, research institutes, medical centers. For more than two decades, the Port of Miami, known as the Cruise Capital of the World, has been the number one cruise port in the world. It accommodates some of the worlds largest cruise ships and operations, Metropolitan Miami is the major tourism hub in the American South, number two in the U. S. after New York City and number 13 in the world, including the popular destination of Miami Beach. The Miami area was inhabited for thousands of years by indigenous Native American tribes, the Tequestas occupied the area for a thousand years before encountering Europeans. An Indian village of hundreds of people dating to 500–600 B. C. was located at the mouth of the Miami River, in 1566 the explorer, Pedro Menéndez de Avilés, claimed it for Spain. A Spanish mission was constructed one year later in 1567, Spain and Great Britain successively controlled Florida, and Spain ceded it to the United States in 1821. In 1836, the US built Fort Dallas as part of its development of the Florida Territory and attempt to suppress, the Miami area subsequently became a site of fighting during the Second Seminole War. Miami is noted as the major city in the United States conceived by a woman, Julia Tuttle, a local citrus grower. The Miami area was known as Biscayne Bay Country in the early years of its growth. In the late 19th century, reports described the area as a promising wilderness, the area was also characterized as one of the finest building sites in Florida. The Great Freeze of 1894–95 hastened Miamis growth, as the crops of the Miami area were the ones in Florida that survived. Julia Tuttle subsequently convinced Henry Flagler, a tycoon, to expand his Florida East Coast Railway to the region
21.
Will and testament
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For the devolution of property not disposed of by will, see inheritance and intestacy. Thus, the word will validly applies to personal and real property. A will may also create a testamentary trust that is only after the death of the testator. Throughout most of the world, disposal of an estate has been a matter of social custom, according to Plutarch, the written will was invented by Solon. Originally it was a device intended solely for men who died without an heir, the English phrase will and testament is derived from a period in English law when Old English and Law French were used side by side for maximum clarity. Other such legal doublets include breaking and entering and peace and quiet, the conception of the freedom of disposition by will, familiar as it is in modern England and the United States, both generally considered common law systems, is by no means universal. In fact, complete freedom is the rather than the rule. Civil law systems often put some restrictions on the possibilities of disposal, advocates for gays and lesbians have pointed to the inheritance rights of spouses as desirable for same-sex couples as well, through same-sex marriage or civil unions. Opponents of such advocacy rebut this claim by pointing to the ability of same-sex couples to disperse their assets by will, types of wills generally include, nuncupative - oral or dictated, often limited to sailors or military personnel. Holographic will - written in the hand of the testator, in many jurisdictions, the signature, self-proved - in solemn form with affidavits of subscribing witnesses to avoid probate. Notarial - will in public form and prepared by a civil-law notary, servicemans will - will of person in active-duty military service and usually lacking certain formalities, particularly under English law. Reciprocal/mirror/mutual/husband and wife wills - wills made by two or more parties that make similar or identical provisions in favor of each other, unsolemn will - will in which the executor is unnamed. Will in solemn form - signed by testator and witnesses, some jurisdictions recognize a holographic will, made out entirely in the testators own hand, or in some modern formulations, with material provisions in the testators hand. The distinctive feature of a holographic will is less that it is handwritten by the testator, in Louisiana this type of testament is called an Olographic or Mystic will. It must be written, dated, and signed in the handwriting of the testator. Although the date may appear anywhere in the testament, the testator must sign the testament at the end of the testament, any additions or corrections must also be entirely hand written to have effect. In England, the formalities of wills are relaxed for soldiers who express their wishes on active service, a minority of jurisdictions even recognize the validity of nuncupative wills, particularly for military personnel or merchant sailors. However, there are constraints on the disposition of property if such an oral will is used
22.
Illinois
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Illinois is a state in the midwestern region of the United States, achieving statehood in 1818. It is the 6th most populous state and 25th largest state in terms of land area, the word Illinois comes from a French rendering of a native Algonquin word. For decades, OHare International Airport has been ranked as one of the worlds busiest airports, Illinois has long had a reputation as a bellwether both in social and cultural terms and politics. With the War of 1812 Illinois growth slowed as both Native Americans and Canadian forces often raided the American Frontier, mineral finds and timber stands also had spurred immigration—by the 1810s, the Eastern U. S. Railroads arose and matured in the 1840s, and soon carried immigrants to new homes in Illinois, as well as being a resource to ship their commodity crops out to markets. Railroads freed most of the land of Illinois and other states from the tyranny of water transport. By 1900, the growth of jobs in the northern cities and coal mining in the central and southern areas attracted a new group of immigrants. Illinois was an important manufacturing center during both world wars, the Great Migration from the South established a large community of African Americans in Chicago, who created the citys famous jazz and blues cultures. Three U. S. presidents have been elected while living in Illinois, Abraham Lincoln, Ulysses S. Grant, additionally, Ronald Reagan, whose political career was based in California, was the only U. S. president born and raised in Illinois. Today, Illinois honors Lincoln with its official slogan, Land of Lincoln. The Abraham Lincoln Presidential Library and Museum is located in the capital of Springfield. Illinois is the spelling for the early French Catholic missionaries and explorers name for the Illinois Native Americans. American scholars previously thought the name Illinois meant man or men in the Miami-Illinois language and this etymology is not supported by the Illinois language, as the word for man is ireniwa and plural men is ireniwaki. The name Illiniwek has also said to mean tribe of superior men. The name Illinois derives from the Miami-Illinois verb irenwe·wa he speaks the regular way and this was taken into the Ojibwe language, perhaps in the Ottawa dialect, and modified into ilinwe·. The French borrowed these forms, changing the ending to spell it as -ois. The current spelling form, Illinois, began to appear in the early 1670s, the Illinois name for themselves, as attested in all three of the French missionary-period dictionaries of Illinois, was Inoka, of unknown meaning and unrelated to the other terms. American Indians of successive cultures lived along the waterways of the Illinois area for thousands of years before the arrival of Europeans, the Koster Site has been excavated and demonstrates 7,000 years of continuous habitation
23.
Chicago
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Chicago, officially the City of Chicago, is the third-most populous city in the United States. With over 2.7 million residents, it is the most populous city in the state of Illinois, and it is the county seat of Cook County. In 2012, Chicago was listed as a global city by the Globalization and World Cities Research Network. Chicago has the third-largest gross metropolitan product in the United States—about $640 billion according to 2015 estimates, the city has one of the worlds largest and most diversified economies with no single industry employing more than 14% of the workforce. In 2016, Chicago hosted over 54 million domestic and international visitors, landmarks in the city include Millennium Park, Navy Pier, the Magnificent Mile, Art Institute of Chicago, Museum Campus, the Willis Tower, Museum of Science and Industry, and Lincoln Park Zoo. Chicagos culture includes the arts, novels, film, theater, especially improvisational comedy. Chicago also has sports teams in each of the major professional leagues. The city has many nicknames, the best-known being the Windy City, the name Chicago is derived from a French rendering of the Native American word shikaakwa, known to botanists as Allium tricoccum, from the Miami-Illinois language. The first known reference to the site of the current city of Chicago as Checagou was by Robert de LaSalle around 1679 in a memoir, henri Joutel, in his journal of 1688, noted that the wild garlic, called chicagoua, grew abundantly in the area. In the mid-18th century, the area was inhabited by a Native American tribe known as the Potawatomi, the first known non-indigenous permanent settler in Chicago was Jean Baptiste Point du Sable. Du Sable was of African and French descent and arrived in the 1780s and he is commonly known as the Founder of Chicago. In 1803, the United States Army built Fort Dearborn, which was destroyed in 1812 in the Battle of Fort Dearborn, the Ottawa, Ojibwe, and Potawatomi tribes had ceded additional land to the United States in the 1816 Treaty of St. Louis. The Potawatomi were forcibly removed from their land after the Treaty of Chicago in 1833, on August 12,1833, the Town of Chicago was organized with a population of about 200. Within seven years it grew to more than 4,000 people, on June 15,1835, the first public land sales began with Edmund Dick Taylor as U. S. The City of Chicago was incorporated on Saturday, March 4,1837, as the site of the Chicago Portage, the city became an important transportation hub between the eastern and western United States. Chicagos first railway, Galena and Chicago Union Railroad, and the Illinois, the canal allowed steamboats and sailing ships on the Great Lakes to connect to the Mississippi River. A flourishing economy brought residents from rural communities and immigrants from abroad, manufacturing and retail and finance sectors became dominant, influencing the American economy. The Chicago Board of Trade listed the first ever standardized exchange traded forward contracts and these issues also helped propel another Illinoisan, Abraham Lincoln, to the national stage
24.
Tonne
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The SI symbol for the tonne is t, adopted at the same time as the unit itself in 1879. Its use is also official, for the metric ton, within the United States, having been adopted by the US National Institute of Standards and it is a symbol, not an abbreviation, and should not be followed by a period. Informal and non-approved symbols or abbreviations include T, mT, MT, in French and all English-speaking countries that are predominantly metric, tonne is the correct spelling. Before metrication in the UK the unit used for most purposes was the Imperial ton of 2,240 pounds avoirdupois, equivalent to 1,016 kg, differing by just 1. 6% from the tonne. Ton and tonne are both derived from a Germanic word in use in the North Sea area since the Middle Ages to designate a large cask. A full tun, standing about a high, could easily weigh a tonne. An English tun of wine weighs roughly a tonne,954 kg if full of water, in the United States, the unit was originally referred to using the French words millier or tonneau, but these terms are now obsolete. The Imperial and US customary units comparable to the tonne are both spelled ton in English, though they differ in mass, one tonne is equivalent to, Metric/SI,1 megagram. Equal to 1000000 grams or 1000 kilograms, megagram, Mg, is the official SI unit. Mg is distinct from mg, milligram, pounds, Exactly 1000/0. 453 592 37 lb, or approximately 2204.622622 lb. US/Short tons, Exactly 1/0. 907 184 74 short tons, or approximately 1.102311311 ST. One short ton is exactly 0.90718474 t, imperial/Long tons, Exactly 1/1. 016 046 9088 long tons, or approximately 0.9842065276 LT. One long ton is exactly 1.0160469088 t, for multiples of the tonne, it is more usual to speak of thousands or millions of tonnes. Kilotonne, megatonne, and gigatonne are more used for the energy of nuclear explosions and other events. When used in context, there is little need to distinguish between metric and other tons, and the unit is spelt either as ton or tonne with the relevant prefix attached. *The equivalent units columns use the short scale large-number naming system used in most English-language countries. †Values in the equivalent short and long tons columns are rounded to five significant figures, ǂThough non-standard, the symbol kt is also sometimes used for knot, a unit of speed for sea-going vessels, and should not be confused with kilotonne. A metric ton unit can mean 10 kilograms within metal trading and it traditionally referred to a metric ton of ore containing 1% of metal. In the case of uranium, the acronym MTU is sometimes considered to be metric ton of uranium, in the petroleum industry the tonne of oil equivalent is a unit of energy, the amount of energy released by burning one tonne of crude oil, approximately 42 GJ
25.
Oolite
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Oolite or oölite is a sedimentary rock formed from ooids, spherical grains composed of concentric layers. The name derives from the Ancient Greek word ᾠόν for egg, strictly, oolites consist of ooids of diameter 0. 25–2 mm, rocks composed of ooids larger than 2 mm are called pisolites. The term oolith can refer to oolite or individual ooids, ooids are most commonly composed of calcium carbonate, but can be composed of phosphate, clays, chert, dolomite or iron minerals, including hematite. Dolomitic and chert ooids are most likely the result of the replacement of the texture in limestone. Oolitic hematite occurs at Red Mountain near Birmingham, Alabama, along with oolitic limestone and they are usually formed in warm, supersaturated, shallow, highly agitated marine water intertidal environments, though some are formed in inland lakes. The mechanism of formation starts with a fragment of sediment acting as a seed. Strong intertidal currents wash the seeds around on the seabed, where they accumulate layers of chemically precipitated calcite from the supersaturated water, the oolites are commonly found in large current bedding structures that resemble sand dunes. The size of the oolite reflects the time they have had exposed to the water before they were covered with later sediment. Oolites are often used in the aquarium industry because their small grain size is ideal for shallow static beds. Also known as sand, the sugar-sized round grains of this sand pass easily through the gills of gobies. Importantly, this unusually smooth sand promotes the growth of bacteria, because of its extremely small grain size, oolitic sand has a lot of surface area, which promotes high bacterial growth. A particular type, Bath Stone, gives the buildings of the World Heritage City of Bath their distinctive appearance, the material consolidated and eroded during later exposure above the ocean surface. One of the worlds largest freshwater lakebed oolites is the Shoofly Oolit,10 million years ago, the Plain formed the bed of Lake Idaho. Wave action in the lake washed sediments back and forth in the shallows on the shore, forming ooids. When the lake drained, the oolite was left behind, along with siltstone, volcanic tuffs, the other sediments eroded away, while the more resistant oolite weathered into hummocks, small arches and other intriguing natural sculptures. The Shoofly Oolite lies on land west of Bruneau, Idaho managed by the Bureau of Land Management. The physical and chemical properties of the Shoofly Oolite are the setting for a suite of rare plants and this type of limestone is also found in Indiana in the United States. The town of Oolitic, Indiana, was founded for the trade of limestone, quarries in Oolitic, Bedford, and Bloomington contributed the materials for such iconic U. S. landmarks as the Empire State Building in New York and the Pentagon in Arlington, Virginia
26.
Sedimentary rock
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Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earths surface and within bodies of water. Sedimentation is the name for processes that cause mineral and/or organic particles to settle in place. The particles that form a rock by accumulating are called sediment. Sedimentation may also occur as minerals precipitate from solution or shells of aquatic creatures settle out of suspension. The sedimentary rock cover of the continents of the Earths crust is extensive, sedimentary rocks are only a thin veneer over a crust consisting mainly of igneous and metamorphic rocks. Sedimentary rocks are deposited in layers as strata, forming a structure called bedding, sedimentary rocks are also important sources of natural resources like coal, fossil fuels, drinking water or ores. The study of the sequence of rock strata is the main source for an understanding of the Earths history, including palaeogeography, paleoclimatology. The scientific discipline that studies the properties and origin of rocks is called sedimentology. Sedimentology is part of both geology and physical geography and overlaps partly with other disciplines in the Earth sciences, such as pedology, geomorphology, geochemistry, sedimentary rocks have also been found on Mars. Clastic sedimentary rocks are composed of rock fragments that were cemented by silicate minerals. Clastic rocks are composed largely of quartz, feldspar, rock fragments, clay minerals, and mica, any type of mineral may be present, clastic sedimentary rocks, are subdivided according to the dominant particle size. Most geologists use the Udden-Wentworth grain size scale and divide unconsolidated sediment into three fractions, gravel, sand, and mud and this tripartite subdivision is mirrored by the broad categories of rudites, arenites, and lutites, respectively, in older literature. The subdivision of these three categories is based on differences in clast shape, conglomerates and breccias), composition. Conglomerates are dominantly composed of rounded gravel, while breccias are composed of dominantly angular gravel, composition of framework grains The relative abundance of sand-sized framework grains determines the first word in a sandstone name. Naming depends on the dominance of the three most abundant components quartz, feldspar, or the lithic fragments that originated from other rocks, all other minerals are considered accessories and not used in the naming of the rock, regardless of abundance. Clean sandstones with open space are called arenites. Muddy sandstones with abundant muddy matrix are called wackes, six sandstone names are possible using the descriptors for grain composition and the amount of matrix. Mudrocks are sedimentary rocks composed of at least 50% silt- and clay-sized particles and these relatively fine-grained particles are commonly transported by turbulent flow in water or air, and deposited as the flow calms and the particles settle out of suspension
27.
Carbonate
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In chemistry, a carbonate is a salt of carbonic acid, characterized by the presence of the carbonate ion, a polyatomic ion with the formula of CO2−3. The name may mean an ester of carbonic acid, an organic compound containing the carbonate group C2. In geology and mineralogy, the term carbonate can refer both to carbonate minerals and carbonate rock, and both are dominated by the ion, CO2−3. Carbonate minerals are extremely varied and ubiquitous in chemically precipitated sedimentary rock, sodium carbonate and potassium carbonate have been used since antiquity for cleaning and preservation, as well as for the manufacture of glass. Carbonates are widely used in industry, e. g. in iron smelting, as a raw material for Portland cement and lime manufacture, in the composition of ceramic glazes, the carbonate ion is the simplest oxocarbon anion. It consists of one carbon atom surrounded by three oxygen atoms, in a planar arrangement, with D3h molecular symmetry. It has a mass of 60.01 g/mol and carries a total formal charge of −2. It is the base of the hydrogen carbonate ion, HCO−3. The Lewis structure of the ion has two single bonds to negative oxygen atoms, and one short double bond to a neutral oxygen. This structure is incompatible with the symmetry of the ion. This process is called calcination, after calx, the Latin name of quicklime or calcium oxide, CaO, exceptions include lithium, sodium, potassium and ammonium carbonates, as well as many uranium carbonates. In aqueous solution, carbonate, bicarbonate, carbon dioxide, in strongly basic conditions, the carbonate ion predominates, while in weakly basic conditions, the bicarbonate ion is prevalent. In more acid conditions, aqueous carbon dioxide, CO2, is the main form, thus sodium carbonate is basic, sodium bicarbonate is weakly basic, while carbon dioxide itself is a weak acid. Carbonated water is formed by dissolving CO2 in water under pressure, in living systems an enzyme, carbonic anhydrase, speeds the interconversion of CO2 and carbonic acid. Although the carbonate salts of most metals are insoluble in water, in solution this equilibrium between carbonate, bicarbonate, carbon dioxide and carbonic acid changes consonant to changing temperature and pressure conditions. In the case of ions with insoluble carbonates, e. g. CaCO3. This is an explanation for the buildup of scale inside pipes caused by hard water, in organic chemistry a carbonate can also refer to a functional group within a larger molecule that contains a carbon atom bound to three oxygen atoms, one of which is double bonded. These compounds are known as organocarbonates or carbonate esters, and have the general formula ROCOOR′
28.
Fossil
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Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous rock formations and sedimentary layers is known as the fossil record. The study of fossils across geological time, how they were formed, such a preserved specimen is called a fossil if it is older than some minimum age, most often the arbitrary date of 10,000 years. The observation that fossils were associated with certain rock strata led early geologists to recognize a geological timescale in the 19th century. The development of dating techniques in the early 20th century allowed geologists to determine the numerical or absolute age of the various strata. Like extant organisms, fossils vary in size from microscopic, even single bacterial cells one micrometer in diameter, to gigantic, such as dinosaurs, Fossils may also consist of the marks left behind by the organism while it was alive, such as animal tracks or feces. These types of fossil are called trace fossils, as opposed to body fossils, finally, past life leaves some markers that cannot be seen but can be detected in the form of biochemical signals, these are known as chemofossils or biosignatures. The process of fossilization varies according to type and external conditions. Permineralization is a process of fossilization that occurs when an organism is buried, the empty spaces within an organism become filled with mineral-rich groundwater. Minerals precipitate from the groundwater, occupying the empty spaces and this process can occur in very small spaces, such as within the cell wall of a plant cell. Small scale permineralization can produce very detailed fossils, for permineralization to occur, the organism must become covered by sediment soon after death or soon after the initial decay process. The degree to which the remains are decayed when covered determines the later details of the fossil, some fossils consist only of skeletal remains or teeth, other fossils contain traces of skin, feathers or even soft tissues. This is a form of diagenesis, in some cases the original remains of the organism completely dissolve or are otherwise destroyed. The remaining organism-shaped hole in the rock is called an external mold, if this hole is later filled with other minerals, it is a cast. An endocast or internal mold is formed when sediments or minerals fill the cavity of an organism. This is a form of cast and mold formation. If the chemistry is right, the organism can act as a nucleus for the precipitation of minerals such as siderite, if this happens rapidly before significant decay to the organic tissue, very fine three-dimensional morphological detail can be preserved. Nodules from the Carboniferous Mazon Creek fossil beds of Illinois, USA, are among the best documented examples of such mineralization, replacement occurs when the shell, bone or other tissue is replaced with another mineral
29.
Palm Beach County, Florida
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Palm Beach County is a county located in the state of Florida, directly north of Broward County. As of the 2010 census, the population was 1,320,134, the largest city and county seat is West Palm Beach. Named after one of its oldest settlements, Palm Beach, the county was established in 1909, the countys modern-day boundaries were established in 1963. Palm Beach County is one of the three counties in South Florida and is part of the Miami metropolitan area, which was home to an estimated 6,012,331 people at the 2015 census. In 1928, the Okeechobee hurricane struck West Palm Beach and caused thousands of deaths, since then, a number of other tropical cyclones have impacted the area. More recently, the county acquired national attention during the 2000 presidential election, as of 2004, Palm Beach County is Floridas wealthiest county, with a per capita personal income of $44,518. It leads the state in agricultural productivity, agriculture is Palm Beach Countys 2nd largest industry, approximately 10,200 years ago, Native Americans began migrating into Florida. The tribes settling in modern-day Palm Beach County included the Ais, Calusas, Jaegas, Mayaimis, an estimated 20,000 Native Americans lived in South Florida when the Spanish arrived. Their population diminished significantly by the 18th century, due to warfare, enslavement, and diseases from Europe. In 1513, Juan Ponce de León, who led a European expedition to Florida earlier that year, became the first non-Native American to reach Palm Beach County, after landing in the modern day Jupiter area. Runaway African slaves started coming to what was then Spanish Florida in the late 17th century, during the Seminole Wars, these African-American slaves fought with the Seminoles against White settlers and bounty hunters. Portions of the Second Seminole War occurred in Palm Beach County, the oldest surviving structure, the Jupiter Lighthouse, was built in 1860, after receiving authorization to the land from President Franklin Pierce in 1854. During the American Civil War, Florida was a member of the Confederate States of America, to aid the cause of their state, Augustus O. Lang and James Paine removed the lighting mechanism, dimming the lighthouse and assisting their blockade runners. Lang was also the first white settler in Palm Beach County and he built a palmetto shack along the eastern shore of Lake Worth in 1863 after abandoning the cause of the Confederacy. After the Civil War ended, the Jupiter Lighthouse was re-lit in 1866, thirteen years later, a National Weather Service office was established at the lighthouse complex. However, the office was moved to Miami after that citys population began to rapidly grow, in October 1873, a hurricane caused a shipwreck between Biscayne Bay and the New River. The crew survived, but nearly died due to starvation because of the desolation of the area. An Act of Congress on June 20,1874, resulted in the establishment of five houses of Houses of Refuge along the east coast of Florida from the Fort Pierce Inlet southward to Biscayne Bay
30.
Florida Keys
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The Florida Keys are a coral cay archipelago located off the southern coast of Florida, forming the southernmost portion of the continental United States. The islands lie along the Florida Straits, dividing the Atlantic Ocean to the east from the Gulf of Mexico to the northwest, at the nearest point, the southern part of Key West is just 90 miles from Cuba. The Florida Keys are between about 23.5 and 25.5 degrees North latitude, the climate of the Keys is defined as tropical savanna according to Köppen climate classification. More than 95 percent of the area lies in Monroe County. The total land area is 137.3 square miles, the US Census population estimate for 2014 is 77,136. The city of Key West is the county seat of Monroe County, the county consists of a section on the mainland which is almost entirely in Everglades National Park, and the Keys islands from Key Largo to the Dry Tortugas. The Keys were originally inhabited by Calusa and Tequesta Native Americans, de León named the islands Los Martires, as they looked like suffering men from a distance. Key is derived from the Spanish word cayo, meaning small island, for many years, Key West was the largest town in Florida, and it grew prosperous on wrecking revenues. The isolated outpost was located for trade with Cuba and the Bahamas. Improved navigation led to shipwrecks, and Key West went into a decline in the late nineteenth century. The Keys were long accessible only by water and this changed with the completion of Henry Flaglers Overseas Railway in the early 1910s. Flagler, a developer of Floridas Atlantic coast, extended his Florida East Coast Railway down to Key West with an ambitious series of over-sea railroad trestles. Three hurricanes disrupted the project in 1906,1909, and 1910, one of the worst hurricanes to strike the U. S. made landfall near Islamorada in the Upper Keys on Labor Day, Monday, September 2. Winds were estimated to have gusted to 200 mph, raising a storm more than 17.5 feet above sea level that washed over the islands. More than 400 people were killed, though some place the number of deaths at more than 600. The Labor Day Hurricane is one of three hurricanes to make landfall at Category 5 strength on the U. S. coast since reliable weather records began. The other storms were Hurricane Camille and Hurricane Andrew, in 1935, new bridges were under construction to connect a highway through the entire Keys. Hundreds of World War I veterans working on the roadway as part of a government relief program were housed in non-reinforced buildings in three camps in the Upper Keys
31.
Mortar (masonry)
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In its broadest sense mortar includes pitch, asphalt, and soft mud or clay, such as used between mud bricks. Mortar comes from Latin mortarium meaning crushed, mortars are typically made from a mixture of sand, a binder, and water. The most common binder since the early 20th century is Portland cement, there are several types of cement mortars and additives. The first mortars were made of mud and clay, because of a lack of stone and an abundance of clay, Babylonian constructions were of baked brick, using lime or pitch for mortar. According to Roman Ghirshman, the first evidence of using a form of mortar was at the Mehrgarh of Baluchistan in Pakistan. The ancient sites of Harappan civilization of third millennium BCE are built with kiln-fired bricks, gypsum mortar, also called plaster of Paris, was used in the construction of the Egyptian pyramids and many other ancient structures. It is made from gypsum, which requires a firing temperature. It is therefore easier to make lime mortar and sets up much faster which may be a reason it was used as the typical mortar in ancient, brick arch. Gypsum mortar is not as durable as other mortars in damp conditions, in early Egyptian pyramids, which were constructed during the Old Kingdom, the limestone blocks were bound by mortar of mud and clay, or clay and sand. In later Egyptian pyramids, the mortar was made of gypsum or lime. Gypsum mortar was essentially a mixture of plaster and sand and was quite soft, in the Indian subcontinent, multiple cement types have been observed in the sites of the Indus Valley Civilization, such as the Mohenjo-daro city-settlement that dates to earlier than 2600 BCE. Bitumen mortar was used at a lower-frequency, including in the Great Bath at Mohenjo-daro. Historically, building with concrete and mortar next appeared in Greece, the excavation of the underground aqueduct of Megara revealed that a reservoir was coated with a pozzolanic mortar 12 mm thick. This aqueduct dates back to c.500 BCE, pozzolanic mortar is a lime based mortar, but is made with an additive of volcanic ash that allows it to be hardened underwater, thus it is known as hydraulic cement. The Greeks obtained the volcanic ash from the Greek islands Thira and Nisiros, or from the then Greek colony of Dicaearchia near Naples, the Romans later improved the use and methods of making what became known as pozzolanic mortar and cement. Even later, the Romans used a mortar without pozzolana using crushed terra cotta, introducing aluminum oxide and this mortar was not as strong as pozzolanic mortar, but, because it was denser, it better resisted penetration by water. Hydraulic mortar was not available in ancient China, possibly due to a lack of volcanic ash, around 500 CE, sticky rice soup was mixed with slaked lime to make an inorganic−organic composite mortar that had more strength and water resistance than lime mortar. It is not understood how the art of making hydraulic mortar and cement, during the Middle Ages when the Gothic cathedrals were being built, the only active ingredient in the mortar was lime
32.
Hurricane Andrew
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Hurricane Andrew was, at the time of its occurrence in August 1992, the most destructive hurricane in United States history. Passing directly through the town of Homestead, Florida, a city south of Miami, Andrew obliterated entire blocks of homes, over 25,000 houses were destroyed in Miami-Dade County alone, and nearly 100,000 more were severely damaged. 65 people were killed and the total across the affected regions exceeded $26 billion. Andrew originated from a wave over the central Atlantic, becoming the fourth tropical cyclone. In Miami-Dade County alone, damage was estimated at $25 billion. Several hours later, the hurricane emerged over the Gulf of Mexico at Category 4 strength, with the Gulf Coast of the United States in its projected path, after weakening slightly, Andrew moved ashore near Morgan City, Louisiana, as low-end Category 3 storm. The effects of land caused the hurricane to rapidly lose its intensity. The next day, Andrew merged with a system over the southern Appalachian Mountains. In the Bahamas, Andrew brought storm surge, hurricane-force winds, about 800 houses were destroyed in the archipelago, and there was substantial damage to the transport, water, sanitation, agriculture, and fishing sectors. Overall, Andrew left four dead and $250 million in damage throughout the Bahamas, in parts of southern Florida, Andrew produced severe winds, a wind gust of 177 mph was observed at a house in Perrine. These winds wreaked catastrophic damage in Florida—Miami-Dade County cities of Florida City, Homestead, a total of 63,000 homes were destroyed and more than 101,000 others were damaged, leaving roughly 175,000 people homeless. As many as 1.4 million people lost power at the height of the storm, in the Everglades,70,000 acres of trees were downed. Rainfall in Florida was substantial, peaking at 13.98 in in western Miami-Dade County, altogether, Andrew killed 44 and left a record $25 billion in damage in the state. Before moving ashore Andrew caused extensive damage to oil platforms in the Gulf of Mexico and it produced hurricane-force winds along its path through Louisiana, leaving about 152,000 without electricity. Over 80% of trees in the Atchafalaya River Basin were downed, throughout the basin and Bayou Lafourche,187 million freshwater fish were killed in the hurricane. An F3 tornado in St. John the Baptist Parish wrecked 163 structures, with 23,000 houses damaged,985 others destroyed, and 1,951 mobile homes demolished, property losses in Louisiana exceeded $1.5 billion. The hurricane caused the deaths of 17 people in the state, Andrew spawned at least 28 tornadoes along the Gulf Coast, especially in Alabama, Georgia, and Mississippi. A tropical wave moved off the coast of Africa on August 14, under the influence of a ridge of high pressure to its north, the wave tracked quickly westward
33.
Sundial
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A sundial is a device that tells the time of day by the apparent position of the Sun in the sky. In the narrowest sense of the word it consists of a flat plate, as the sun appears to move across the sky, the shadow aligns with different hour-lines which are marked on the dial to indicate the time of day. The style is the edge of the gnomon, though a single point or nodus may be used. The gnomon casts a shadow, the shadow of the style shows the time. The gnomon may be a rod, a wire or a decorated metal casting. The style must be parallel to the axis of the Earths rotation for the sundial to be throughout the year. The styles angle from horizontal is equal to the geographical latitude. In a broader sense a sundial is any device that uses the suns altitude or azimuth to show the time, in addition to their time-telling function, sundials are valued as decorative objects, as literary metaphors and as objects of mathematical study. It is common for inexpensive mass-produced decorative sundials to have incorrectly aligned gnomons and hour-lines, there are several different types of sundials. Some sundials use a shadow or the edge of a shadow while others use a line or spot of light to indicate the time, the shadow-casting object, known as a gnomon, may be a long thin rod or other object with a sharp tip or a straight edge. Sundials employ many types of gnomon, the gnomon may be fixed or moved according to the season. It may be oriented vertically, horizontally, aligned with the Earths axis, given that sundials use light to indicate time, a line of light may be formed by allowing the suns rays through a thin slit or focusing them through a cylindrical lens. A spot of light may be formed by allowing the suns rays to pass through a hole or by reflecting them from a small circular mirror. Sundials also may use many types of surfaces to receive the light or shadow, planes are the most common surface, but partial spheres, cylinders, cones and other shapes have been used for greater accuracy or beauty. Sundials differ in their portability and their need for orientation, the installation of many dials requires knowing the local latitude, the precise vertical direction, and the direction to true North. Portable dials are self-aligning, for example, it may have two dials that operate on different principles, such as a horizontal and analemmatic dial, mounted together on one plate, in these designs, their times agree only when the plate is aligned properly. Sundials indicate the solar time, unless corrected for some other time. To obtain the clock time, three types of corrections need to be made
34.
Obelisk
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An obelisk is a tall, four-sided, narrow tapering monument which ends in a pyramid-like shape or pyramidion at the top. These were originally called tekhenu by their builders, the Ancient Egyptians, the Greeks who saw them used the Greek obeliskos to describe them, and this word passed into Latin and ultimately English. Ancient obelisks are monolithic, that is, they consist of a single stone, though this technological capacity exists today, most modern obelisks are made of several stones, some, like the Washington Monument, are buildings. The term stele is used for other monumental, upright. Obelisks were prominent in the architecture of the ancient Egyptians, who placed them in pairs at the entrance of temples. The word obelisk as used in English today is of Greek rather than Egyptian origin because Herodotus, a number of ancient Egyptian obelisks are known to have survived, plus the Unfinished Obelisk found partly hewn from its quarry at Aswan. These obelisks are now dispersed around the world, and fewer than half of them remain in Egypt, the earliest temple obelisk still in its original position is the 68-foot 120-metric-ton red granite Obelisk of Senusret I of the XIIth Dynasty at Al-Matariyyah in modern Heliopolis. The obelisk symbolized the sun god Ra, and during the religious reformation of Akhenaten was said to be a petrified ray of the Aten. It was also thought that the god existed within the structure, Benben was the mound that arose from the primordial waters Nu upon which the creator god Atum settled in the creation story of the Heliopolitan creation myth form of Ancient Egyptian religion. The Benben stone is the top stone of the Egyptian pyramid and it is also related to the Obelisk. The pyramid and obelisk might have inspired by previously overlooked astronomical phenomena connected with sunrise and sunset. The Ancient Romans were strongly influenced by the form, to the extent that there are now more than twice as many obelisks standing in Rome as remain in Egypt. All fell after the Roman period except for the Vatican obelisk and were re-erected in different locations. The largest standing and tallest Egyptian obelisk is the Lateran Obelisk in the square at the west side of the Lateran Basilica in Rome at 105.6 feet tall, not all the Egyptian obelisks in the Roman Empire were set up at Rome. Herod the Great imitated his Roman patrons and set up a red granite Egyptian obelisk in the hippodrome of his new city Caesarea in northern Judea and this one is about 40 feet tall and weighs about 100 metric tons. It was discovered by archaeologists and has been re-erected at its former site and this one stood 95 feet tall and weighing 380 metric tons. Its lower half reputedly also once stood in Istanbul but is now lost, the Istanbul obelisk is 65 feet tall. Rome is the capital of the world
35.
Water well
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A water well is an excavation or structure created in the ground by digging, driving, boring, or drilling to access groundwater in underground aquifers. The well water is drawn by a pump, or using containers, such as buckets, placing a lining in the well shaft helps create stability and linings of wood or wickerwork date back at least as far as the Iron Age. Wells have been sunk by hand digging as is the case in rural developing areas. These wells are inexpensive and low-tech as they use mostly manual labour, a more modern method called caissoning uses pre-cast reinforced concrete well rings that are lowered into the hole. Deeper wells can be excavated by hand drilling methods or machine drilling, using a bit in a borehole, drilled wells are usually cased with a factory-made pipe composed of steel or plastic. Drilled wells can access water at greater depths than dug wells. A collector well can be constructed adjacent to a lake or stream with water percolating through the intervening material. The site of a well can be selected by a hydrogeologist, Water may be pumped or hand drawn. Impurities from the surface can easily reach shallow sources and contamination of the supply by pathogens or chemical contaminants needs to be avoided, Well water typically contains more minerals in solution than surface water and may require treatment before being potable. Soil salination can occur as the water falls and the surrounding soil begins to dry out. Another environmental problem is the potential for methane to seep into the water, hand-dug wells are excavations with diameters large enough to accommodate one or more people with shovels digging down to below the water table. The excavation is braced horizontally to avoid landslide or erosion endangering the people digging, a more modern method called caissoning uses reinforced concrete or plain concrete pre-cast well rings that are lowered into the hole. A well-digging team digs under a ring and the well column slowly sinks into the aquifer. Hand-dug wells are inexpensive and low tech as they use mostly manual labour to access groundwater in rural locations in developing countries and they may be built with a high degree of community participation, or by local entrepreneurs who specialize in hand-dug wells. They have been excavated to 60 metres. They have low operational and maintenance costs, in part because water can be extracted by hand bailing, without a pump. The water is coming from an aquifer or groundwater, and can be easily deepened. The yield of existing hand dug wells may be improved by deepening or introducing vertical tunnels or perforated pipes, drawbacks to hand-dug wells are numerous
36.
Fountain
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A fountain is a piece of architecture which pours water into a basin or jets it into the air to supply drinking water and/or for a decorative or dramatic effect. Fountains were originally purely functional, connected to springs or aqueducts and used to drinking water and water for bathing and washing to the residents of cities, towns. Until the late 19th century most fountains operated by gravity, and needed a source of higher than the fountain, such as a reservoir or aqueduct. In addition to providing drinking water, fountains were used for decoration, Roman fountains were decorated with bronze or stone masks of animals or heroes. In the Middle Ages, Moorish and Muslim garden designers used fountains to create versions of the gardens of paradise. King Louis XIV of France used fountains in the Gardens of Versailles to illustrate his power over nature, the baroque decorative fountains of Rome in the 17th and 18th centuries marked the arrival point of restored Roman aqueducts and glorified the Popes who built them. By the end of the 19th century, as indoor plumbing became the source of drinking water. Mechanical pumps replaced gravity and allowed fountains to recycle water and to force it high into the air, the Jet dEau in Lake Geneva, built in 1951, shoots water 140 metres in the air. The highest such fountain in the world is King Fahds Fountain in Jeddah, Saudi Arabia, fountains are used today to decorate city parks and squares, to honor individuals or events, for recreation and for entertainment. A Splash pad or spray pool allows city residents to enter, get wet, the musical fountain combines moving jets of water, colored lights and recorded music, controlled by a computer, for dramatic effects. Drinking fountains provide clean drinking water in buildings, parks. Ancient civilizations built stone basins to capture and hold precious drinking water, a carved stone basin, dating to around 2000 BC, was discovered in the ruins of the ancient Sumerian city of Lagash in modern Iraq. The ancient Assyrians constructed a series of basins in the gorge of the Comel River, carved in rock, connected by small channels. The lowest basin was decorated with carved reliefs of two lions, the ancient Greeks were apparently the first to use aqueducts and gravity-powered fountains to distribute water. In the 6th century BC the Athenian ruler Peisistratos built the fountain of Athens. It had nine large cannons, or spouts, which supplied drinking water to local residents. Greek fountains were made of stone or marble, with water flowing through bronze pipes, most Greek fountains flowed by simple gravity, but they also discovered how to use principle of a siphon to make water spout, as seen in pictures on Greek vases. The Ancient Romans built a system of aqueducts from mountain rivers and lakes to provide water for the fountains
37.
Rocking chair
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A rocking chair or rocker is a type of chair with two curved bands attached to the bottom of the legs, connecting the legs on each side to each other. The rockers contact the floor at only two points, giving the occupant the ability to back and forth by shifting their weight or pushing lightly with their feet. Rocking chairs are most commonly made of wood, the word rocking chair comes from the verb to rock. The first known use of the rocking chair was in 1766. Rocking chairs are often seen as synonymous with parenting, as the rocking motion can soothe infants. Many adults find rocking chairs soothing because of the gentle motion, gentle rocking motion has been shown to provide faster onset of sleep than remaining stationary, mimicking the process of a parent rocking a child to sleep. Varieties of rockers include those mounted on a base called platform rockers. Originally used in gardens, they were ordinary chairs with rockers attached. It was in 1725 that early rocking chairs first appeared in England, the production of wicker rocking chairs reached its peak in America during the middle of the 18th century. These wicker rockers, as they were known, were famous for their craftsmanship. Michael Thonet, a German craftsman, created the first bentwood rocking chair in 1860 and this design is distinguished by its graceful shape and its light weight. These rocking chairs were influenced by Greek and Roman designs as well as Renaissance, during the 1920s, however, folding rocking chairs became more popular in the United States and in Europe. They were handy for outdoor activities and travel purposes, by the 1950s, rocking chairs built by Sam Maloof, an American craftsman, became famous for their durability and deluxe appearance. Maloofs rocking chairs are distinguished by their ski-shaped rockers, President John F. Kennedy made the P & P Chair Companys rocking chair famous. In 1955, Kennedy, who suffered chronic back problems, was prescribed swimming. The President so enjoyed the rocker that, after he was inaugurated in 1961, he took the chair on Air Force One when he traveled around the country and the world. He bought additional rockers for Camp David and for the Kennedy estates, and he gave them as gifts to friends, family, kennedys rocking chair from the White House is on permanent display at the John F. Kennedy Library and Museum. Per the manufacturing design, the Kennedy Rocking Chair is shaped, steam-bent, and assembled while the wood is still green
38.
Lunar phase
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The lunar phase or phase of the moon is the shape of the illuminated portion of the Moon as seen by an observer on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the positions of the Moon. The Moons rotation is locked by the Earths gravity, therefore the same lunar surface always faces Earth. This face is variously sunlit depending on the position of the Moon in its orbit, therefore, the portion of this hemisphere that is visible to an observer on Earth can vary from about 100% to 0%. The lunar terminator is the boundary between the illuminated and darkened hemispheres, each of the four intermediate lunar phases is roughly seven days but this varies slightly due to the elliptical shape of the Moons orbit. Aside from some craters near the lunar poles such as Shoemaker, all parts of the Moon see around 14.77 days of sunlight, in Western culture, the four principal lunar phases are new moon, first quarter, full moon, and third quarter. These are the instants when the Moons apparent geocentric celestial longitude minus the Suns apparent geocentric longitude is 0°, 90°, 180° and 270°. Each of these phases is instantaneous, lasting theoretically zero time, during the intervals between principal phases, the Moon appears either crescent-shaped or gibbous. These shapes, and the periods of time when the Moon shows them, are called the intermediate phases. They last, on average, one-quarter of a month, roughly 7.38 days, but their durations vary slightly because the Moons orbit is slightly elliptical. The descriptor waxing is used for a phase when the Moons apparent size is increasing, from new moon toward full moon. As the moon waxes, the lunar phases progress through new moon, crescent moon, first-quarter moon, gibbous moon, the moon is then said to wane as it passes through the gibbous moon, third-quarter moon, crescent moon and back to new moon. The terms old moon and new moon are not interchangeable, the old moon is a waning sliver until the moment it aligns with the sun and begins to wax, at which point it becomes new again. Half moon is used to mean the first- and third-quarter moons, while the term quarter refers to the extent of the moons cycle around the Earth. When a crescent Moon occurs, the phenomenon of earthshine may be apparent, in the Northern Hemisphere, if the left side of the Moon is dark then the light part is growing, and the Moon is referred to as waxing. If the right side of the Moon is dark then the part is shrinking. Assuming that the viewer is in the hemisphere, the right portion of the Moon is the part that is always growing. Nearer the Equator the Moon with its terminator will appear apparently horizontal during the morning and evening, the crescent Moon can open upward or downward, with the horns of the crescent pointing up or down, respectively
39.
Throne
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A throne is the seat of state of a potentate or dignitary, especially the seat occupied by a sovereign on state occasions, or the seat occupied by a pope or bishop on ceremonial occasions. Throne in an abstract sense can refer to the monarchy or the Crown itself, an instance of metonymy. These have ranged from stools in places such as a Africa to ornate chairs and bench-like designs in Europe and Asia, respectively. Accordingly, many thrones are typically held to have been constructed or fabricated out of rare or hard to find materials that may be valuable or important to the land in question, when used in a religious sense, throne can refer to one of two distinct uses. The other use for throne refers to a belief among many of the worlds monotheistic and polytheistic religions that the deity or deities that they worship are seated on a throne. Such beliefs go back to ancient times, and can be seen in surviving artwork, Thrones were found throughout the canon of ancient furniture. The depiction of monarchs and deities as seated on chairs is a topos in the iconography of the Ancient Near East. The word throne itself is from Greek θρόνος, seat, chair, early Greek Διὸς θρόνους was a term for the support of the heavens, i. e. the axis mundi, which term when Zeus became an anthropomorphic god was imagined as the seat of Zeus. In Ancient Greek, a thronos was a specific but ordinary type of chair with a footstool, the Achaeans were known to place additional, empty thrones in the royal palaces and temples so that the gods could be seated when they wished to be. The most famous of these thrones was the throne of Apollo in Amyclae, the Romans also had two types of thrones- one for the Emperor and one for the goddess Roma whose statues were seated upon thrones, which became centers of worship. The word throne in English translations of the Bible renders Hebrew כסא kissē, the Pharaoh of the Exodus is described as sitting on a throne, but mostly the term refers to the throne of the kingdom of Israel, often called the throne of David or throne of Solomon. The literal throne of Solomon is described in 1 Kings 10, 18-20, Moreover the king made a great throne of ivory, and overlaid it with the best gold. The throne had six steps, and the top of the throne was round behind, and there were stays on either side on the place of the seat, and two lions stood beside the stays. And twelve lions stood there on the one side and on the other upon the six steps, in the Book of Esther, the same word refers to the throne of the king of Persia. And He will reign over the house of Jacob forever, Jesus promised his Apostles that they would sit upon twelve thrones, judging the twelve tribes of Israel. Johns Revelation states, And I saw a white throne, and him that sat on it, from whose face the earth. The Apostle Paul speaks of thrones in Colossians 1,16, pseudo-Dionysius the Areopagite, in his work, De Coelesti Hierarchia interprets this as referring to one of the ranks of angels. This concept was expanded upon by Thomas Aquinas in his Summa Theologica, in Medieval times the Throne of Solomon was associated with the Virgin Mary, who was depicted as the throne upon which Jesus sat
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In Search of... (TV series)
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Is a television series that was broadcast weekly from 1977 to 1982, devoted to mysterious phenomena. All three featured narration by Rod Serling, who was the choice to host the spin-off show. After Serlings death, Leonard Nimoy was selected to be the host, the program conducted investigations into the controversial and paranormal. The producers purpose is to suggest some possible explanations, but not necessarily the only ones, the production values were fairly typical of the period, with interviews, reenactments and scenic footage shot on film, all voiced over by Nimoy. The style was often more expository than explanatory, the music was composed by Laurin M. Rinder and W. Michael Lewis. A soundtrack album was released on AVI Records in 1977, Nimoys popularity among science fiction fans won the show a following in fandom circles. Nimoy wrote an episode about the turbulent life of artist Vincent van Gogh, as part of his research, Nimoy found records in the archives of the hospital where Van Gogh was treated that suggested that he suffered from epilepsy rather than insanity. In 1978, Landsburg produced a Bigfoot documentary using portions of two In Search of, myth or Monster, based on his book In Search of Myths and Monsters. Though Nimoy had written the foreword to Landsburgs book, he did not narrate this documentary, reruns of the In Search of. Series aired during the early 1990s on the A&E Network, in the later 1990s, the show aired on another of the A&E Television Networks properties, The History Channel. The licensing agreement expired in the early 2000s, ending the shows run, when the show aired on A&E, a re-recording of the original theme music was used plus a new alternate theme. The original opening titles were also modernized, and, inexplicably, virtually all of Nimoys on-camera appearances in the series were replaced with reused footage, so viewers could hear Nimoy but not see him. A short-lived revival of the show, featuring Mitch Pileggi, aired on the Sci-Fi Channel in 2002, the original program ran for six seasons. In February 2012, it was announced that Visual Entertainment, under license from Universal Studios, had acquired the video rights to the original series for the United States. In Search of, The Complete Collection was released in Canada, the 21-DVD set includes all 144 installments hosted by Leonard Nimoy. Also included are two Rod Serling specials In Search of Ancient Astronauts and In Search of Ancient Mysteries which aired prior to the start of the regular Nimoy series, the other two Landsburg specials, The Outer Space Connection and Manbeast. Myth or Monster, are not included, VEI also included all eight episodes of the short-lived 2002 series, hosted by Mitch Pileggi. At the Internet Movie Database In Search of, at the Internet Movie Database In Search of
41.
That's Incredible!
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Thats Incredible. is an American reality television show that aired on the ABC television network from 1980 to 1984. In the tradition of You Asked for It, Ripleys Believe It or Not. and Real People, the show also often featured people with unusual talents, such as speed-talker John Moschitta, Jr. The show was co-hosted by Fran Tarkenton, John Davidson, and Cathy Lee Crosby, originally aired as an hour-long program, episodes were later re-edited into 30 minute segments for syndication. It debuted on March 3,1980, a number of the stunts performed were dangerous, including juggling knives, staying inside a small box for hours, and one involving a man supposedly catching a bullet between his teeth. The dangerous nature of these stunts eventually prompted producers to augment the footage with the caption Do Not Try This Yourself, steve Baker also known as Mr. Escape, was frequently featured on the show. The show has been cited as an influence on culture in New Zealand. In the early 1980s, Army Lt. Col. Earl Woods brought his son Eldrick to Thats Incredible, Eldrick is now better known by his nickname Tiger. The show ranked in the top 30 for its first four seasons, and ranked in the top 10 during its first season, but fell out of the top 30 in its final season. 1) 1979–80, #3 2) 1980–81, #22 3) 1981–82, #28 4) 1982–83, #22 5) 1983–84, Not in the Top 30 In 1980, Thats Incredible. was revived in 1988, hosted by Davidson, Cristina Ferrare, and Tracey Gold and was renamed Incredible Sunday. It lasted only during the 1988–1989 season, the show was seen weekends on Retro Television Network. On February 14,1983, the Fray children, as adults, a film about the life of their mother. - a similar show on the Discovery Channel Those Amazing Animals - animal-related spinoff of Thats Incredible, at the Internet Movie Database Incredible Sunday at the Internet Movie Database Thats Incredible. At TV. com Incredible Sunday at TV. com
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Bearing (mechanical)
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A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. Most bearings facilitate the desired motion by minimizing friction, Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads applied to the parts. Rotary bearings hold rotating components such as shafts or axles within mechanical systems, the simplest form of bearing, the plain bearing, consists of a shaft rotating in a hole. Lubrication is often used to reduce friction, a wide variety of bearing designs exists to allow the demands of the application to be correctly met for maximum efficiency, reliability, durability and performance. The term bearing is derived from the verb to bear, a bearing being an element that allows one part to bear another. The simplest bearings are bearing surfaces, cut or formed into a part, with varying degrees of control over the form, size, roughness, other bearings are separate devices installed into a machine or machine part. The most sophisticated bearings for the most demanding applications are very precise devices, the invention of the rolling bearing, in the form of wooden rollers supporting, or bearing, an object being moved is of great antiquity, and may predate the invention of the wheel. Though it is claimed that the Egyptians used roller bearings in the form of tree trunks under sleds. They are depicted in their own drawings in the tomb of Djehutihotep as moving massive stone blocks on sledges with liquid-lubricated runners which would constitute a plain bearing, there are also Egyptian drawings of bearings used with hand drills. The earliest recovered example of a rolling element bearing is a ball bearing supporting a rotating table from the remains of the Roman Nemi ships in Lake Nemi. The wrecks were dated to 40 BC, leonardo da Vinci incorporated drawings of ball bearings in his design for a helicopter around the year 1500. This is the first recorded use of bearings in an aerospace design, however, Agostino Ramelli is the first to have published sketches of roller and thrust bearings. An issue with ball and roller bearings is that the balls or rollers rub against each other causing additional friction which can be reduced by enclosing the balls or rollers within a cage, the captured, or caged, ball bearing was originally described by Galileo in the 17th century. The first practical caged-roller bearing was invented in the mid-1740s by horologist John Harrison for his H3 marine timekeeper and this uses the bearing for a very limited oscillating motion but Harrison also used a similar bearing in a truly rotary application in a contemporaneous regulator clock. The first modern recorded patent on ball bearings was awarded to Philip Vaughan and his was the first modern ball-bearing design, with the ball running along a groove in the axle assembly. Bearings played a role in the nascent Industrial Revolution, allowing the new industrial machinery to operate efficiently. For example, they saw use for holding wheel and axle to greatly reduce friction over that of dragging an object by making the act over a shorter distance as the wheel turned. The first plain and rolling-element bearings were wood closely followed by bronze, over their history bearings have been made of many materials including ceramic, sapphire, glass, steel, bronze, other metals and plastic which are all used today
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Rust
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Rust is an iron oxide, usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture. Several forms of rust are distinguishable both visually and by spectroscopy, and form under different circumstances, Rust consists of hydrated iron oxides Fe2O3·nH2O and iron oxide-hydroxide. Given sufficient time, oxygen, and water, any iron mass will eventually convert entirely to rust, surface rust is flaky and friable, and it provides no protection to the underlying iron, unlike the formation of patina on copper surfaces. Rusting is the term for corrosion of iron and its alloys. Many other metals undergo similar corrosion, but the resulting oxides are not commonly called rust, other forms of rust exist, like the result of reactions between iron and chloride in an environment deprived of oxygen. Rebar used in concrete pillars, which generates green rust, is an example. Rust is another name for iron oxide, which occurs when iron or an alloy that contains iron, like steel, is exposed to oxygen and moisture for a long period of time. Over time, the oxygen combines with the metal at a level, forming a new compound called an oxide. Although some people refer to rust generally as oxidation, that term is more general, although rust forms when iron undergoes oxidation. Only iron or alloys that contain iron can rust, but other metals can corrode in similar ways, the main catalyst for the rusting process is water. Iron or steel structures might appear to be solid, but water molecules can penetrate the microscopic pits, the hydrogen atoms present in water molecules can combine with other elements to form acids, which will eventually cause more metal to be exposed. If chloride ions are present, as is the case with saltwater, meanwhile, the oxygen atoms combine with metallic atoms to form the destructive oxide compound. As the atoms combine, they weaken the metal, making the structure brittle, when impure iron is in contact with water, oxygen, other strong oxidants, or acids, it rusts. If salt is present, for example in seawater or salt spray, iron metal is relatively unaffected by pure water or by dry oxygen. As with other metals, like aluminium, a tightly adhering oxide coating, the conversion of the passivating ferrous oxide layer to rust results from the combined action of two agents, usually oxygen and water. Other degrading solutions are sulfur dioxide in water and carbon dioxide in water, under these corrosive conditions, iron hydroxide species are formed. Unlike ferrous oxides, the hydroxides do not adhere to the bulk metal, when iron rusts, the oxides take up more volume than the original metal, this expansion can generate enormous forces, damaging structures made with iron. See Economic effect for more details, the rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen
