1.
World Heritage Site
–
A World Heritage Site is a landmark which has been officially recognized by the United Nations, specifically by the United Nations Educational, Scientific and Cultural Organization. Sites are selected on the basis of having cultural, historical, scientific or some form of significance. UNESCO regards these sites as being important to the interests of humanity. The programme catalogues, names, and conserves sites of outstanding cultural or natural importance to the common culture, under certain conditions, listed sites can obtain funds from the World Heritage Fund. The program was founded with the Convention Concerning the Protection of the Worlds Cultural and Natural Heritage, since then,192 state parties have ratified the convention, making it one of the most adhered to international instruments. As of July 2016,1052 sites are listed,814 cultural,203 natural, in 1959, the governments of Egypt and Sudan requested UNESCO to assist their countries to protect and rescue the endangered monuments and sites. In 1960, the Director-General of UNESCO launched an appeal to the Member States for an International Campaign to Save the Monuments of Nubia, the campaign, which ended in 1980, was considered a success. The project cost $80 million, about $40 million of which was collected from 50 countries, the projects success led to other safeguarding campaigns, saving Venice and its lagoon in Italy, the ruins of Mohenjo-daro in Pakistan, and the Borobodur Temple Compounds in Indonesia. UNESCO then initiated, with the International Council on Monuments and Sites, the United States initiated the idea of cultural conservation with nature conservation. The International Union for Conservation of Nature developed similar proposals in 1968, the Convention came into force on 17 December 1975. As of June 2016, it has been ratified by 192 states, including 188 UN member states plus the Cook Islands, the Holy See, Niue, a country must first list its significant cultural and natural sites, the result is called the Tentative List. A country may not nominate sites that have not been first included on the Tentative List, next, it can place sites selected from that list into a Nomination File. The Nomination File is evaluated by the International Council on Monuments and Sites and these bodies then make their recommendations to the World Heritage Committee. There are ten selection criteria – a site must meet at least one of them to be included on the list, up to 2004, there were six criteria for cultural heritage and four criteria for natural heritage. In 2005, this was modified so there is now only one set of ten criteria. Nominated sites must be of outstanding value and meet at least one of the ten criteria. Thus, the Geneva Convention treaty promulgates, Article 53, PROTECTION OF CULTURAL OBJECTS AND OF PLACES OF WORSHIP. There are 1,052 World Heritage Sites located in 165 States Party, of these,814 are cultural,203 are natural and 35 are mixed properties
World Heritage Site
–
Site #252:
Taj Mahal, an example of cultural heritage site
World Heritage Site
–
Logo of the
United Nations Educational, Scientific and Cultural Organization (UNESCO)
World Heritage Committee
World Heritage Site
–
Site #156:
Serengeti National Park, an example of natural heritage site
World Heritage Site
–
Site #274:
Historic Sanctuary of Machu Picchu, an example of mixed heritage site
2.
Santa Cruz de la Sierra
–
Santa Cruz de la Sierra, commonly known as Santa Cruz, is the capital of the Santa Cruz department in eastern Bolivia. It was not until after World War II and profound agrarian and this has helped make Santa Cruz the most important business center in Bolivia and the preferred destination of migrants from all over the country. However, recent data suggests that the current location of the city of Santa Cruz was inhabited by an Arawak tribe that came to be known by the Spanish as Chané. Remains of ceramics and weapons have been found in the area, the settlement was named after Chaves’s home town in Extremadura, where he grew up before venturing to America. Shortly after the founding, attacks from local tribes became commonplace, many of the inhabitants, however, chose to stay behind and continued living in the original location. On September 13,1590 the city was moved to the banks of the Guapay Empero river. Nevertheless, the proved to be even more severe at the new location forcing the settlers to relocate once again on May 21,1595. After they moved the city was consolidated in 1622 and took its original name of Santa Cruz de la Sierra given by Ñuflo de Chaves over 60 years before. Remnants of the settlement can be visited in Santa Cruz la Vieja. Over the next 200 years, several tribes were incorporated under Spanish control or defeated by force. The efforts for consolidating the borders of the Empire were not overlooked by the authorities in Lima, the province was ruled by a Captain General based in Santa Cruz, and, in turn, the city government was administered by two mayors and a council of four people. Citizens of Santa Cruz were exempt from all taxes and the mita system used in the rest of the Viceroyalty of Peru was not practiced. However, in spite of its importance, the city did not grow much in colonial times. Most of the activity was centered in the mining centers of the west. Animosity towards imperial authorities began at the turn of the 18th century, the seat of government was taken away from the city and moved to Cochabamba, and many of the powers delegated by the viceroyalty were now in the hands of appointees of the crown. A junta of local commanders took control of the government in his place, by 1813 the city was once again under imperial control. At this time, by order of General Manuel Belgrano, the armies of Argentina sent a small force led by Ignacio Warnes to liberate Santa Cruz. After his successful campaign he assumed control of the government of the city and this victory proved to be a serious blow to Spanish forces in the region
Santa Cruz de la Sierra
–
Santa Cruz de la Sierra city center.
Santa Cruz de la Sierra
Santa Cruz de la Sierra
–
Coat of arms
Santa Cruz de la Sierra
–
Ignacio Warnes
3.
Geographic coordinate system
–
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
Geographic coordinate system
–
Longitude lines are perpendicular and latitude lines are parallel to the equator.
4.
Spanish language
–
Spanish —also called Castilian —is a Romance language that originated in the Castile region of Spain, with hundreds of millions of native speakers around the world. It is usually considered the worlds second-most spoken native language after Mandarin Chinese and it is one of the few languages to use inverted question and exclamation marks. Spanish is a part of the Ibero-Romance group of languages, which evolved from several dialects of Vulgar Latin in Iberia after the collapse of the Western Roman Empire in the 5th century. Beginning in the early 16th century, Spanish was taken to the colonies of the Spanish Empire, most notably to the Americas, as well as territories in Africa, Oceania, around 75% of modern Spanish is derived from Latin. Greek has also contributed substantially to Spanish vocabulary, especially through Latin, Spanish vocabulary has been in contact from an early date with Arabic, having developed during the Al-Andalus era in the Iberian Peninsula. With around 8% of its vocabulary being Arabic in origin, this language is the second most important influence after Latin and it has also been influenced by Basque as well as by neighboring Ibero-Romance languages. It also adopted words from languages such as Gothic language from the Visigoths in which many Spanish names and surnames have a Visigothic origin. Spanish is one of the six languages of the United Nations. It is the language in the world by the number of people who speak it as a mother tongue, after Mandarin Chinese. It is estimated more than 437 million people speak Spanish as a native language. Spanish is the official or national language in Spain, Equatorial Guinea, speakers in the Americas total some 418 million. In the European Union, Spanish is the tongue of 8% of the population. Spanish is the most popular second language learned in the United States, in 2011 it was estimated by the American Community Survey that of the 55 million Hispanic United States residents who are five years of age and over,38 million speak Spanish at home. The Spanish Constitution of 1978 uses the term castellano to define the language of the whole Spanish State in contrast to las demás lenguas españolas. Article III reads as follows, El castellano es la lengua española oficial del Estado, las demás lenguas españolas serán también oficiales en las respectivas Comunidades Autónomas. Castilian is the official Spanish language of the State, the other Spanish languages as well shall be official in their respective Autonomous Communities. The Spanish Royal Academy, on the hand, currently uses the term español in its publications. Two etymologies for español have been suggested, the Spanish Royal Academy Dictionary derives the term from the Provençal word espaignol, and that in turn from the Medieval Latin word Hispaniolus, from—or pertaining to—Hispania
Spanish language
–
A page of
Cantar de Mio Cid, the oldest preserved Spanish
epic poem, in medieval Spanish.
Spanish language
–
Spanish is sole official language at the national level
Spanish language
–
Antonio de Nebrija, author of
Gramática de la lengua castellana, the first grammar of modern European languages.
Spanish language
–
Miguel de Cervantes author of
Don Quixote, considered the first modern European novel.
5.
Cave
–
A cave is a hollow place in the ground, specifically a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground, the word cave can also refer to much smaller openings such as sea caves, rock shelters, and grottos. A cavern is a type of cave, naturally formed in soluble rock with the ability to grow speleothems. Speleology is the science of exploration and study of all aspects of caves, visiting or exploring caves for recreation may be called caving, potholing, or spelunking. The formation and development of caves is known as speleogenesis, which can occur over the course of millions of years, caves are formed by various geologic processes and can be variable sizes. These may involve a combination of processes, erosion from water, tectonic forces, microorganisms, pressure. Isotopic dating techniques can be applied to cave sediments, in order to determine the timescale when geologic events may have occurred to help form and it is estimated that the maximum depth of a cave cannot be more than 3,000 metres due to the pressure of overlying rocks. For karst caves the maximum depth is determined on the basis of the limit of karst forming processes. Most caves are formed in limestone by dissolution, solutional caves or karst caves are the most frequently occurring caves and such caves form in rock that is soluble. Most occur in limestone, but they can form in other rocks including chalk, dolomite, marble, salt. Rock is dissolved by acid in groundwater that seeps through bedding planes, faults, joints. Over geological epochs cracks expand to become caves and cave systems, the largest and most abundant solutional caves are located in limestone. Limestone dissolves under the action of rainwater and groundwater charged with H2CO3, the dissolution process produces a distinctive landform known as karst, characterized by sinkholes and underground drainage. Limestone caves are often adorned with calcium carbonate formations produced through slow precipitation and these include flowstones, stalactites, stalagmites, helictites, soda straws and columns. These secondary mineral deposits in caves are called speleothems, the portions of a solutional cave that are below the water table or the local level of the groundwater will be flooded. Lechuguilla Cave in New Mexico and nearby Carlsbad Cavern are now believed to be examples of type of solutional cave. They were formed by H2S gas rising from below, where reservoirs of oil give off sulfurous fumes and this gas mixes with ground water and forms H2SO4. The acid then dissolves the limestone from below, rather than from above, caves formed at the same time as the surrounding rock are called primary caves
Cave
–
Lechuguilla Cave,
New Mexico, USA
Cave
–
Speleothems in Hall of the Mountain King of
Ogof Craig a Ffynnon, a solutional cave in
South Wales.
Cave
–
Exploring a
lava tube in
Hawaii.
Cave
–
Painted Cave, a large
sea cave,
Santa Cruz Island,
California
6.
Provinces of Argentina
–
Argentina is subdivided into twenty-three provinces and one autonomous city, Ciudad Autónoma de Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system, during the War of Independence the main cities and their surrounding countrysides became provinces though the intervention of their cabildos. The Anarchy of the Year XX completed this process, shaping the original thirteen provinces, Jujuy seceded from Salta in 1834, and the thirteen provinces became fourteen. After seceding for a decade, Buenos Aires Province accepted the 1853 Constitution of Argentina in 1861, a law from 1862 designated as national territories those under federal control but outside the frontiers of the provinces. In 1884 they served as bases for the establishment of the governorates of Misiones, Formosa, Chaco, La Pampa, Neuquén, Río Negro, Chubut, Santa Cruz and Tierra del Fuego. The agreement about a dispute with Chile in 1900 created the National Territory of Los Andes, its lands were incorporated into Jujuy, Salta. La Pampa and Chaco became provinces in 1951, Misiones did so in 1953, and Formosa, Neuquén, Río Negro, Chubut and Santa Cruz, in 1955. The last national territory, Tierra del Fuego, became the Tierra del Fuego, Argentina is a federation of twenty-three provinces and one autonomous city, Buenos Aires. Provinces are divided for administration purposes into departments and municipalities, except for Buenos Aires Province, Buenos Aires City itself is divided into communes. Provinces hold all the power that they not to delegate to the federal government, they must be representative republics. Beyond this they are autonomous, they enact their own constitutions, freely organize their local governments. Since 1983 four provinces were intervened, namely Catamarca, Corrientes, Santiago del Estero, article 61 of the Constitution of the city of Buenos Aires states that Suffrage is free, equal, secret, universal, compulsory and not accumulative. The foreign residents enjoy this right, with the obligations, on equal terms with Argentine citizens registered in this district. Argentina is divided into seven geographical regions, many provinces having their territories across more than one. Source, Demographics of Argentina ISO 3166-2, AR, the ISO codes for the provinces of Argentina. com Argentine Provinces since 1973 at World Statesmen
Provinces of Argentina
7.
Santa Cruz Province, Argentina
–
Santa Cruz is a province of Argentina, located in the southern part of the country, in Patagonia. It borders Chubut province to the north, and Chile to the west, Santa Cruz is the second-largest province of the country, and the least densely populated in mainland Argentina. The indigenous people of the province are the Tehuelches, who despite European exploration from the 16th century onwards, soon after the Conquest of the Desert in the 1870s, the area was organised as the Territory of Santa Cruz, named after its original capital in Puerto Santa Cruz. The capital moved to Rio Gallegos in 1888 and has remained ever since. Immigrants from various European countries came to the territory in the late 19th, Santa Cruz became a province of Argentina in 1957. The Tehuelches inhabited these lands before the arrivals of the Spanish colonisation, in 1520 Ferdinand Magellan arrived to what is currently known as San Julián Bay. 15 years later Martín de Alcazaba explored the area near the Chico River, in the middle of the 18th century, the Jesuits settled in the area, establishing a few missions. When the Viceroyalty of the Río de la Plata was created in 1776, antonio de Biedma founded Nueva Colonia near present Puerto Deseado and Floridablanca not far from Puerto San Julián, both of them shut down later by Viceroy Vertíz. Between 1825 and 1836 there were a series of explorations of the regions, in 1860 commander Luis Piedrabuena established a base on Isla Pavón in the estuary of Puerto Deseado. In 1901 the capital was moved to its current location at the city of Río Gallegos, at the beginning of 20th century, a large European immigration began to arrive to the almost uninhabited zone, Spanish, Germans, British and Slavs were the most numerous among them. They came mainly to escape the growing conflicts of World War I, the end of the war meant a sharp reduction in the amount of exports, bringing a serious economic crisis to Santa Cruz. The ideals of progressivism, brought by the Spanish immigrants, grew among the workers who, working in Santa Cruzs harsh environment under often sub-human conditions, decided to strike in 1922. The strike was severely and harshly repressed by the government, culminating in the events of the Patagonia Trágica, in 1944 the Military zone of Comodoro Rivadavia was created, which encompassed the northern part of the National Government of Santa Cruz and the southern part of Chubut Province. This jurisdiction lasted until the abolition of the measures in 1955, the Territory of Santa Cruz acquired province status in 1957. In 1973, voters in Santa Cruz elected Jorge Cepernic, a Peronist, an advocate of labor rights, Gov. Cepernic worked with film maker Osvaldo Bayer to make La Patagonia Rebelde, a documentary drama on the ill-fated 1922 sheep ranch laborers strike. For this, Gov. Cepernic was imprisoned following the March,1976, elected mayor in 1987 and governor in 1991, Kirchner helped negotiate a US$535 million payout for his province following the 1993 privatization of the state-owned oil concern YPF. Presiding over four years of expansion totalling 42%, Pres, Kirchner steered record spending into public works. To the west, the Andes at these latitudes are lower than in the centre and north of Argentina, an immense ice sheet feeds the numerous glaciers
Santa Cruz Province, Argentina
–
Clockwise from top:
Cueva de las Manos,
Harbour of Río Gallegos,
Perito Moreno Glacier (
Los Glaciares National Park),
Río Pinturas.
Santa Cruz Province, Argentina
–
Ochre-ink art in Rio Pinturas, Santa Cruz. Made by the long-vanished Toldense people, they are perhaps 9,000 years old.
Santa Cruz Province, Argentina
–
Scene from
La Patagonia rebelde. Based on an ill-fated local strike in 1922, the 1974 epic was made with the encouragement of Santa Cruz's governor.
Santa Cruz Province, Argentina
–
Néstor and
Cristina Kirchner (center) in conference with fellow
Patagonia -area lawmakers.
8.
Argentina
–
Argentina, officially the Argentine Republic, is a federal republic in the southern half of South America. With a mainland area of 2,780,400 km2, Argentina is the eighth-largest country in the world, the second largest in Latin America, and the largest Spanish-speaking one. The country is subdivided into provinces and one autonomous city, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system, Argentina claims sovereignty over part of Antarctica, the Falkland Islands, and South Georgia and the South Sandwich Islands. The earliest recorded presence in the area of modern-day Argentina dates back to the Paleolithic period. The country has its roots in Spanish colonization of the region during the 16th century, Argentina rose as the successor state of the Viceroyalty of the Río de la Plata, a Spanish overseas viceroyalty founded in 1776. The country thereafter enjoyed relative peace and stability, with waves of European immigration radically reshaping its cultural. The almost-unparalleled increase in prosperity led to Argentina becoming the seventh wealthiest developed nation in the world by the early 20th century, Argentina retains its historic status as a middle power in international affairs, and is a prominent regional power in the Southern Cone and Latin America. Argentina has the second largest economy in South America, the third-largest in Latin America and is a member of the G-15 and it is the country with the second highest Human Development Index in Latin America with a rating of very high. Because of its stability, market size and growing high-tech sector, the description of the country by the word Argentina has to be found on a Venice map in 1536. In English the name Argentina probably comes from the Spanish language, however the naming itself is not Spanish, Argentina means in Italian of silver, silver coloured, probably borrowed from the Old French adjective argentine of silver > silver coloured already mentioned in the 12th century. The French word argentine is the form of argentin and derives of argent silver with the suffix -in. The Italian naming Argentina for the country implies Argentina Terra land of silver or Argentina costa coast of silver, in Italian, the adjective or the proper noun is often used in an autonomous way as a substantive and replaces it and it is said lArgentina. The name Argentina was probably first given by the Venitian and Genoese navigators, in Spanish and Portuguese, the words for silver are respectively plata and prata and of silver is said plateado and prateado. Argentina was first associated with the silver mountains legend, widespread among the first European explorers of the La Plata Basin. The first written use of the name in Spanish can be traced to La Argentina, a 1602 poem by Martín del Barco Centenera describing the region, the 1826 constitution included the first use of the name Argentine Republic in legal documents. The name Argentine Confederation was also used and was formalized in the Argentine Constitution of 1853. In 1860 a presidential decree settled the name as Argentine Republic
Argentina
–
The
Cave of the Hands in
Santa Cruz province, with indigenous artwork dating from 13,000–9,000 years ago
Argentina
Argentina
–
The surrender of Beresford to
Santiago de Liniers during the
British invasions of the Río de la Plata
Argentina
–
Portrait of General
José de San Martin,
Libertador of Argentina,
Chile and
Peru
9.
Cave painting
–
Cave paintings are painted drawings on cave walls or ceilings, mainly of prehistoric origin, to some 40,000 years ago in Eurasia. The exact purpose of the Paleolithic cave paintings is not known, evidence suggests that they were not merely decorations of living areas since the caves in which they have been found do not have signs of ongoing habitation. They are also located in areas of caves that are not easily accessible. Some theories hold that cave paintings may have been a way of communicating with others, the paintings are remarkably similar around the world, with animals being common subjects that give the most impressive images. Humans mainly appear as images of hands, mostly hand stencils made by blowing pigment on a hand held to the wall. The earliest known cave paintings/drawings of animals are at least 35,000 years old and are found in Pettakere cave on the island of Sulawesi in Indonesia, previously it was believed that the earliest paintings were in Europe. The earliest non-figurative rock art dates back to approximately 40,000 years ago, nearly 340 caves have now been discovered in France and Spain that contain art from prehistoric times. But subsequent technology has made it possible to date the paintings by sampling the pigment itself, the choice of subject matter can also indicate chronology. For instance, the reindeer depicted in the Spanish cave of Cueva de las Monedas places the drawings in the last Ice Age. The oldest date given to a cave painting is now a pig that has a minimum age of 35,400 years old at Pettakere cave in Sulawesi. Indonesian and Australian scientists have dated other non-figurative paintings on the walls to be approximately 40,000 years old, the method they used to confirm this was dating the age of the stalactites that formed over the top of the paintings. The art is similar in style and method to that of the Indonesian caves as there were also hand stencils and this date coincides with the earliest known evidence for Homo sapiens in Europe. Because of the cave arts age, some scientists have conjectured that the paintings may have made by Neanderthals. The earliest known European figurative cave paintings are those of Chauvet Cave in France and these paintings date to earlier than 30,000 BCE according to radiocarbon dating. Some researchers believe the drawings are too advanced for this era, the radiocarbon dates from these samples show that there were two periods of creation in Chauvet,35,000 years ago and 30,000 years ago. In 2009, cavers discovered drawings in Coliboaia Cave in Romania, an initial dating puts the age of an image in the same range as Chauvet, about 32,000 years old. Some caves probably continued to be painted over a period of thousands of years. This was created roughly between 10,000 and 5,500 years ago, and painted in rock shelters under cliffs or shallow caves, though individual figures are less naturalistic, they are grouped in coherent grouped compositions to a much greater degree
Cave painting
–
Cave of Altamira, near
Santander,
Spain.
Cave painting
–
Cueva de las Manos (Spanish for Cave of the Hands) in the Santa Cruz province in
Argentina
Cave painting
–
Cueva de las Monedas
Cave painting
–
Spanish cave painting of bulls.
10.
Radiocarbon dating
–
Radiocarbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed by Willard Libby in the late 1940s, Libby received the Nobel Prize for his work in 1960. The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting radiocarbon combines with oxygen to form radioactive carbon dioxide. When the animal or plant dies, it stops exchanging carbon with its environment, and from that point onwards the amount of 14C it contains begins to decrease as the 14C undergoes radioactive decay. Measuring the amount of 14C in a sample from a plant or animal such as a piece of wood or a fragment of bone provides information that can be used to calculate when the animal or plant died. The idea behind radiocarbon dating is straightforward, but years of work were required to develop the technique to the point where accurate dates could be obtained. Research has been ongoing since the 1960s to determine what the proportion of 14C in the atmosphere has been over the past fifty thousand years. The resulting data, in the form of a curve, is now used to convert a given measurement of radiocarbon in a sample into an estimate of the samples calendar age. Other corrections must be made to account for the proportion of 14C in different types of organisms, additional complications come from the burning of fossil fuels such as coal and oil, and from the above-ground nuclear tests done in the 1950s and 1960s. Conversely, nuclear testing increased the amount of 14C in the atmosphere, measurement of radiocarbon was originally done by beta-counting devices, which counted the amount of beta radiation emitted by decaying 14C atoms in a sample. The development of dating has had a profound impact on archaeology. In addition to permitting more accurate dating within archaeological sites than previous methods, histories of archaeology often refer to its impact as the radiocarbon revolution. Radiocarbon dating has allowed key transitions in prehistory to be dated, such as the end of the last ice age, and they synthesized 14C using the laboratorys cyclotron accelerator and soon discovered that the atoms half-life was far longer than had been previously thought. This was followed by a prediction by Serge A. Korff, then employed at the Franklin Institute in Philadelphia and it had previously been thought that 14C would be more likely to be created by deuterons interacting with 13C. At some time during World War II, Willard Libby, who was then at Berkeley, learned of Korffs research, in 1945, Libby moved to the University of Chicago where he began his work on radiocarbon dating. He published a paper in 1946 in which he proposed that the carbon in living matter might include 14C as well as non-radioactive carbon, by contrast, methane created from petroleum showed no radiocarbon activity because of its age. The results were summarized in a paper in Science in 1947, Libby and James Arnold proceeded to test the radiocarbon dating theory by analyzing samples with known ages
Radiocarbon dating
–
Sheep on the beach in
North Ronaldsay. In the winter, these sheep eat seaweed, which has a higher δ 13 C content than grass; samples from these sheep have a δ 13 C value of about −13‰, which is much higher than for sheep that feed on grasses.
Radiocarbon dating
–
Simplified version of the carbon exchange reservoir, showing proportions of carbon and relative activity of the 14 C in each reservoir
Radiocarbon dating
–
Measuring 14 C is now most commonly done with an accelerator mass spectrometer
Radiocarbon dating
–
The stump of a very old bristlecone pine. Tree rings from these trees (among others) are used in building calibration curves.
11.
Silhouettes
–
A silhouette is the image of a person, animal, object or scene represented as a solid shape of a single color, usually black, with its edges matching the outline of the subject. The interior of a silhouette is featureless, and the whole is typically presented on a background, usually white. The silhouette differs from an outline, which depicts the edge of an object in a linear form, while a silhouette appears as a solid shape. Silhouette images may be created in any visual media, but was first used to describe pieces of cut paper, which were then stuck to a backing in a contrasting colour. Other artists, especially from about 1790, drew an outline on paper, then painted it in, anything that appears this way, for example, a figure standing backlit in a doorway, may be described as in silhouette. Because of de Silhouettes austere economies, his name synonymous with anything done or made cheaply. Prior to the advent of photography, silhouette profiles cut from black card were the cheapest way of recording a persons appearance, the term silhouette, although existing from the 18th century, was not applied to the art of portrait-making until the 19th century. The silhouette is closely tied in mythology to the origins of art, pliny the Elder, in his Natural History Books XXXIV and XXXV, recounts the origin of painting. In Chapter 5 of Book XXXV, he writes, “We have no knowledge as to the commencement of the art of painting. The Egyptians assert that it was invented among themselves, six years before it passed into Greece. As to the Greeks, some say that it was invented at Sicyon, others at Corinth, but they all agree that it originated in tracing lines round the human shadow. “. In Chapter 15, he tells the story of Butades of Corinth, “Butades, a potter of Sicyon, was the first who invented, at Corinth, the art of modelling portraits in the earth which he used in his trade. Upon seeing this, her father filled in the outline, by compressing clay upon the surface, and so made a face in relief, the pots themselves exhibit strong forms in outline that are indicators of their purpose, as well as being decorative. For this reason profile portraits have been employed on coinage since the Roman era, the early Renaissance period saw a fashion for painted profile portraits and people such as Federico da Montefeltro and Ludovico Sforza were depicted in profile portraits. The profile portrait is linked to the silhouette. This is an important concept for artists who design characters for visual media, a silhouette portrait can be painted or drawn. However, the method of creating silhouette portraits is to cut them from lightweight black cardboard. This was the work of specialist artists, often working out of booths at fairs or markets, a traditional silhouette portrait artist would cut the likeness of a person, freehand, within a few minutes
Silhouettes
–
A traditional silhouette portrait of the late 18th century
Silhouettes
–
Goethe facing a grave monument, cut paper, 1780
Silhouettes
–
Name vase by the Nessos Painter. The scene on the neck shows Heracles stabbing
Nessos. The scene on the belly shows events associated with
Perseus. C. 620–610 BC, now in the Athens National Archaeological Museum
Silhouettes
–
The traditional method of making a silhouette portrait
12.
Tehuelche people
–
The Tehuelche people is the generic name given to a group of indigenous peoples of Patagonia and the southern pampas regions of Argentina and Chile. Tehuelche is a Mapuche language word meaning Fierce People and they were also called Patagones by Spanish explorers, who found large footprints made by the tribes on the Patagonian beaches. These large footprints were made by the guanaco leather boots that the Tehuelche used to cover their feet. According to the 2001 census,4,300 Tehuelche lived in the provinces of Chubut and Santa Cruz, there are now no Tehuelche tribes living in Chile, though some Tehuelche were assimilated into Mapuche groups over the years. The Tehuelche people have a history of over 14,500 years in the region, the nomadic lifestyle of Tehuelches left scarce archeological evidence of their past. They were hunter-gatherers living as nomads, during the winters they lived in the lowlands, catching fish and shellfish. During the spring they migrated to the highlands of Patagonia and the Andes Mountains, where they spent the summer and early fall. Although they developed no original pottery, they are known for their cave paintings. The Spanish arrived in the early 16th century, on March 31,1520, the Portuguese explorer Ferdinand Magellan landed and made contact with the Tehuelche people. The Spanish never colonized their lands, with the exception of coastal settlements. It took more than 300 years before the Argentine government occupied the southern Patagonia, as nomads, the Tehuelche lived with limited possessions, as they had to move across long distances. Their rock tools were made of obsidian or basalt, as those rocks were malleable. Those rocks, however, could be found in certain parts of Patagonia. The Tehuelche hunted many species in the Patagonia, including whales, sea mammals, small rodents and sea birds, their prey was guanacos. Both species were found at the same places, as the rheas eat the larvae that grow in the guanacos manure. Everything from the guanaco was used by the Tehuelche, the meat and blood were used for food, the fat to grease their bodies during winter, the Tehuelches also gathered fruits that grew during the Patagonian summer. Those fruits were the sweet foods in their diet. The Tehuelche originally spoke Tehuelche, also known as Aonikenk, one of the Chonan languages, later, with the Araucanization of Patagonia, many tribes started to speak variants of Mapudungun, the Mapuche language
Tehuelche people
–
Tehuelche camp, 1838
Tehuelche people
–
Cueva de las Manos, a site with Tehuelche
cave paintings, Santa Cruz Province, Argentina.
13.
Patagonia
–
Patagonia is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile. The region comprises the section of the Andes mountains as well as the deserts, steppes. Patagonia has two coasts, a western one towards the Pacific Ocean and an eastern one towards the Atlantic Ocean, the Colorado and Barrancas rivers, which run from the Andes to the Atlantic, are commonly considered the northern limit of Argentine Patagonia. The archipelago of Tierra del Fuego is sometimes included as part of Patagonia, most geographers and historians locate the northern limit of Chilean Patagonia at Reloncaví Estuary. The name Patagonia comes from the word used by Magellan in 1520 to describe the native people that his expedition thought to be giants. It is now believed that the people he called the Patagons were Tehuelches, the hypothesis was accepted and published in the New Review of Spanish Philology in the 2011 article. In the hollows of the plains are ponds or lakes of fresh and brackish water, towards the Andes, the shingle gives place to porphyry, granite, and basalt lavas, animal life becomes more abundant and vegetation more luxuriant. It is characteristic of the flora of the western coast, and consist principally of southern beech and conifers. Among the depressions by which the plateau is intersected transversely, the ones are the Gualichu, south of the Río Negro, the Maquinchao and Valcheta, the Senguerr. There, erosion which is caused principally by the sudden melting, best in evidence where in contact with folded Cretaceous rocks which are uplifted by the Cenozoic granite. It generally separates the plateau from the first lofty hills, the ridges generally called the pre-Cordillera, to the west of these, a similar longitudinal depression extends all along the foot of the snowy Andean Cordillera. This latter depression contains the richest and most fertile land of Patagonia, Lake basins along the Cordillera were also excavated by ice-streams, including Lake Argentino and Lake Fagnano, as well as coastal bays such as Bahía Inútil. There have been discrepancies among geologists on the origin of the Patagonian landmass, víctor Ramos has proposed that the Patagonian landmass originated as an allochtonous terrane that separated from Antarctica and docked in South America 250 to 270 Ma in the Permian era. A2014 study by Robert John Pankhurst and coworkers reject any idea of a far-travelled Patagonia claiming it is likely of parautochtonous origin, the Mesozoic and Cenozoic deposits have revealed a most interesting vertebrate fauna. The Patagonian Myolania belongs to the Upper Chalk, having been associated with remains of Dinosauria. In the Cenozoic marine formation, a number of cetaceans has been discovered. At a state level, Patagonia lies inside two countries, Chile and Argentina, both countries have organised their Patagonian territories into non-equivalent administrative subdivisions, Provinces and departments in Argentina, and regions, provinces and communes in Chile. Being a unitary state Chiles first level administrative divisions—the regions—enjoy far less autonomy than Argentine provinces, Argentine provinces have elected governors and parliaments, while Chilean regions have government-appointed intendants
Patagonia
–
Patagonia
Patagonia
–
Map of Patagonia according to the most accepted extent (see text).
Patagonia
–
Black-browed albatross, near
Ushuaia
Patagonia
–
Cueva de las Manos site in Santa Cruz, Argentina
14.
National Route 40 (Argentina)
–
The southern part of the route, a largely unpaved road through sparsely populated territory, has become a well-known adventure tourism journey, although it is now planned to pave the whole road. Route 40 is the longest route in Argentina and one of the longest in the world, the road crosses the provinces of Santa Cruz, Chubut, Río Negro, Neuquen, Mendoza, San Juan, La Rioja, Catamarca, Tucumán, Salta and Jujuy. The attraction is actually international in scope, and many throughout the world advertise the private. RN40 begins at the Bolivian border at La Quiaca, from San Juan RN40 is a busy highway to Mendoza. From Mendoza RN40 continues south to Pareditas, Malargüe, Chos Malal and it takes a route to the east of Bariloche to El Maitén and a junction with RN258 at Leleque. It then passes near Esquel and continues by Tecka, José de San Martín, the road then enters the most remote part of its route. 124 km south of Perito Moreno is a junction with a road to Cueva de las Manos. From Tres Lagos the road is paved to a junction 32 km east of El Calafate and another junction at El Cerrito, where RN40 leaves the main highway to Rio Gallegos. The route then takes a route to Rio Gallegos through the town of 28 de Noviembre. It reaches the Atlantic coast at Punta Loyola, at the mouth of the Gallegos River 36 km from Rio Gallegos, since the beginning of its construction in 1935, the route has changed several times. That zero-km marker was moved to the eastern access point of that city, at the intersection of Route 7. The intent of new legislation and remarking of roadways will move the northern terminus of Route 40 to the frontier with Bolivia near the location of Ciénaga de Paicone. The agreement was ratified by provincial law 5520, accordingly, the section of the road between San Antonio de los Cobres and Abra Pampa is renamed National Route 1V40. On February 2009, president Cristina Kirchner announced that the remaining unpaved length of the route in Santa Cruz was going to be paved, official Site Route 40 - Argentine longest
National Route 40 (Argentina)
–
Abra del Acay (5061
m) in
Salta Province
National Route 40 (Argentina)
–
National Route 40 in south of Santa Cruz province
National Route 40 (Argentina)
–
Ruta 40 in northern Santa Cruz province
National Route 40 (Argentina)
–
National Route 40, San Juan Province
15.
Stencil
–
The stencil is both the resulting image or pattern and the intermediate object, the context in which stencil is used makes clear which meaning is intended. The key advantage of a stencil is that it can be reused to repeatedly and rapidly produce the same letters or design, although aerosol or painting stencils can be made for one-time use, typically they are made with the intention of being reused. To be reusable, they must remain intact after a design is produced, with some designs, this is done by connecting stencil islands to other parts of the stencil with bridges. Stencil technique in visual art is referred to as pochoir. A related technique is aerography, in which spray-painting is done around an object to create a negative of the object instead of a positive of a stencil design. This technique was used in paintings dating to 10,000 BC. The artist sprayed pigment around his hand by using a hollow bone, screen printing also uses a stencil process, as does mimeography. The masters from which mimeographed pages are printed are often called stencils, stencils can be made with one or many colour layers using different techniques, with most stencils designed to be applied as solid colours. During screen printing and mimeography the images for stenciling are broken down into color layers, multiple layers of stencils are used on the same surface to produce multi-colored images. Hand stencils, made by blowing pigment over a hand held against a wall, are found from over 35,000 years ago in Asia and Europe, after that stencilling has been used as a historic painting technique on all kinds of materials. In Europe, from about 1450 they were used to colour old master prints printed in black and white. This was especially the case with playing-cards, which continued to be coloured by stencil long after most other subjects for prints were left in black, stencils were used for mass publications, as the type did not have to be hand-written. Low wages contributed to the popularity of the highly labour-intensive process, when stencils are used in this way they are often called pochoir. In the pochoir process, a print with the outlines of the design was produced, to produce detail, a collotype could be produced which the colors were then stenciled over. Pochoir was frequently used to create prints of intense color, and is most often associated with Art Nouveau, a template is used to create an outline for the image. Stencils templates can be made any material which will hold its form, ranging from plain paper, cardboard, plastic sheets, metals. Stencils are frequently used by organizations, including the military, utility companies and governments, to quickly and clearly label objects, vehicles. Stencils for official application can be customized, or purchased as individual letters, numbers and this allows the user to arrange words, phrases and other labels from one set of templates, unique to the item being labeled
Stencil
–
Stenciled warning sign in
Singapore
Stencil
–
Parts of a stencil
Stencil
–
Japanese
Ise-katagami stencil for printing textiles
Stencil
–
Writing an Arabic name by stencil and
cinnamon powder on Iranian desert, Shole-zrad.
16.
Guanaco
–
The guanaco, a camelid native to South America, stands between 1.0 and 1.2 m at the shoulder and weighs 90 to 140 kg. Its color varies very little, ranging from a brown to dark cinnamon. Guanacos have grey faces and small, straight ears, the name guanaco comes from the South American Quechua word huanaco. The guanaco is a native to the mountainous regions of South America. They are found in the altiplano of Peru, Bolivia and Chile, in Argentina and Chile, they are more numerous in Patagonian regions, as well as in places such as the Torres del Paine National Park, and Isla Grande de Tierra del Fuego. In these areas, they have more robust populations, since grazing competition from livestock is limited, estimates, as of 2011, place their numbers at 400,000 to 600,000. A small introduced population exists on Staats Island in the Falkland Islands, guanacos live in herds composed of females, their young, and a dominant male. While reproductive groups tend to remain small, often containing no more than 10 adults, when they feel threatened, guanacos alert the herd to flee with a high-pitched, bleating call. The male usually runs behind the herd to defend them and they can run at 56 km per hour, often over steep and rocky terrain. A guanacos typical lifespan is 20 to 25 years, guanacos are one of the largest wild mammal species found in South America. Natural predators include cougars, jaguars, and foxes, the guanaco has thicker skin on its neck, a trait also found in its domestic counterpart, the llama and in its relatives, the wild vicuña and domesticated alpaca. This protects its neck from predator attacks, bolivians use the neck-skin of these animals to make shoes, flattening and pounding the skin to be used for the soles. In Chile, hunting is allowed only in Tierra del Fuego, between 2007 and 2012,13,200 guanacos were legally hunted in Tierra del Fuego. Mating season occurs between November and February, during which males often fight violently to establish dominance and breeding rights, eleven-and-a-half months later, a single chulengo is born. Chulengos are able to immediately after birth. Male chulengos are chased off from the herd by the dominant male around one year of age, although the species is still considered wild, around 300 guanacos are in US zoos and around 200 are registered in private herds. Guanacos are the parent species of the domesticated llama, guanacos are often found at high altitudes, up to 4,000 meters above sea level, except in Patagonia, where the southerly latitude means ice covers the vegetation at these altitudes. For guanacos to survive in the low oxygen levels found at high altitudes
Guanaco
–
Guanaco
Guanaco
–
Herd of guanacos
Guanaco
–
Guanacos in
Torres del Paine National Park in
Patagonia
Guanaco
–
The remains of a guanaco scattered in the Atacama Desert, southwest of
Cerro Paranal: The only intact section of skin is the thicker skin around the neck
17.
Rhea (bird)
–
The rheas /ˈriː. ə/ are large ratites in the order Rheiformes, native to South America, related to the ostrich and emu. There were formerly two, but now three recognized extant species, the greater or American rhea, the lesser or Darwins rhea, the genus name was given in 1752 by Paul Möhring and adopted as the English common name. Möhring named the rhea based on the Greek Titan Rhea, whose name is derived from the Greek Rhea from έρα ground and this was fitting, the rhea being a flightless ground bird. Depending on the South American region, the rhea is known locally as ñandú guazu, ema, suri, nandu is the common name in many European languages. R. a. intermedia Rothschild & Chubb 1914, intermediate rhea of southeastern Brazil in Rio Grande do Sul, R. a. nobilis Brodkorb 1939, eastern Paraguay, east of Rio Paraguay. R. a. araneipes Brodkorb 1938, chaco of Paraguay to Bolivia, R. a. albescens Lynch & Holmberg 1878, plains of Argentina south of Rio Negro. Darwins rhea or lesser rhea Rhea pennata dOrbigny 1834 R. p. garleppi, puna/Garlepps rhea of southeastern Peru, southwestern Bolivia and it is lumped into R. tarapacensis by the IUCN. R. p. tarapacensis, Tarapacá Rhea of northern Chile from Atacama to Tarapacá, regarded as a separate third species by the IUCN. R. p. pennata dOrbigny 1834, Darwins lesser rhea of Patagonian steppes in southern Argentina, Rhea pennata was not always in the genus Rhea. In 2008, the SACC, the last holdout, approved the merging of the genera, Rhea and this merging of genera leaves only the genus Rhea. A former third species of rhea, Rhea nana, was described by Lydekker in 1894 based on an egg found in Patagonia. Rheas are large, flightless birds with grey-brown plumage, long legs and long necks, similar to an ostrich. Large males of R. americana can reach 170 cm tall at the head,100 cm at the back and can weigh up to 40 kg and their wings are large for a flightless bird and are spread while running, to act like sails. Unlike most birds, rheas have only three toes and their tarsus has 18 to 22 horizontal plates on the front of it. They also store urine separately in an expansion of the cloaca, rheas are from South America only and are limited within the continent to Argentina, Bolivia, Brazil, Chile, Paraguay, Peru, and Uruguay. They are grassland birds and both species prefer open land, the greater rheas live in open grasslands, pampas, and chaco woodlands. They prefer to breed near water and prefer lowlands, seldom going above 1,500 metres, on the other hand, the lesser rhea will inhabit most shrubland, grassland, even desert salt puna up to 4,500 metres. A small population of rheas has emerged in northeastern Germany, after several couples escaped from an exotic meat farm near Lübeck in the late 1990s, contrary to expectations, the large birds have adapted well to the conditions in the German countryside
Rhea (bird)
Rhea (bird)
–
Greater rheas (
Rhea americana) dustbathing. The two individuals on the left are
leucistic.
Rhea (bird)
–
Greater rhea head close up
Rhea (bird)
–
A rhea at the Parque Luro, Argentina
18.
Felidae
–
Felidae is the family of cats. A member of family is also called a felid. They are sometimes referred to as hypercarnivores because of the large proportion of protein they require in their diet. Of the 13 terrestrial families in the order Carnivora, they are the strictest carnivores, the first cats emerged during the Oligocene, about 25 million years ago. In prehistoric times, there was a subfamily, the Machairodontinae. Other superficially cat-like mammals, such as the metatherians Thylacosmilus and Thylacoleo, the 42 known cat species in the world today are all descended from a common ancestor. Cats originated in Asia and spread across continents by crossing land bridges, about 60% of the modern cat species are estimated to have developed within the last million years. Felidaes closest relatives are thought to be the Asiatic linsangs, together with the Viverridae, hyenas, mongooses, and Madagascar carnivores, they form the suborder Feliformia. Most cat species share a genetic anomaly that prevents them from tasting sweetness, most cat species have a haploid number of 18 or 19. New World cats have a number of 18, possibly due to the combination of two smaller chromosomes into a larger one. Domestic cats may either have a long or short tail, at one point, biologists had to consider whether the short tail also found in the lynx was the ancestral or derived trait. Without looking at the record, researchers were able to look at the character states found in their outgroups. Because all animals belonging to Felidae’s sister taxa, Viverridae, have long tails, some domestic cats display a rosette pattern on their coats. This character state, however, is not related to the rosettes found on big cats, domestic cats and big cats underwent convergent evolution for this trait. The most common ancestor to all cats had a flecked coat, the jaguarundi lost this character state secondarily. The most common recent ancestor of snow leopards, tigers, jaguars, lions, tigers and lions, however, do not display rosettes as adults. They both have lost this character state over time. Adult tigers actually display elongated rosettes that now appear as stripes, adult lions seem to lack any distinctive markings altogether
Felidae
Felidae
–
Skull of the machairodontine
Smilodon (reconstruction)
Felidae
–
Lion skull
Felidae
–
Cat
19.
Geometry
–
Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. A mathematician who works in the field of geometry is called a geometer, Geometry arose independently in a number of early cultures as a practical way for dealing with lengths, areas, and volumes. Geometry began to see elements of mathematical science emerging in the West as early as the 6th century BC. By the 3rd century BC, geometry was put into a form by Euclid, whose treatment, Euclids Elements. Geometry arose independently in India, with texts providing rules for geometric constructions appearing as early as the 3rd century BC, islamic scientists preserved Greek ideas and expanded on them during the Middle Ages. By the early 17th century, geometry had been put on a solid footing by mathematicians such as René Descartes. Since then, and into modern times, geometry has expanded into non-Euclidean geometry and manifolds, while geometry has evolved significantly throughout the years, there are some general concepts that are more or less fundamental to geometry. These include the concepts of points, lines, planes, surfaces, angles, contemporary geometry has many subfields, Euclidean geometry is geometry in its classical sense. The mandatory educational curriculum of the majority of nations includes the study of points, lines, planes, angles, triangles, congruence, similarity, solid figures, circles, Euclidean geometry also has applications in computer science, crystallography, and various branches of modern mathematics. Differential geometry uses techniques of calculus and linear algebra to problems in geometry. It has applications in physics, including in general relativity, topology is the field concerned with the properties of geometric objects that are unchanged by continuous mappings. In practice, this often means dealing with large-scale properties of spaces, convex geometry investigates convex shapes in the Euclidean space and its more abstract analogues, often using techniques of real analysis. It has close connections to convex analysis, optimization and functional analysis, algebraic geometry studies geometry through the use of multivariate polynomials and other algebraic techniques. It has applications in areas, including cryptography and string theory. Discrete geometry is concerned mainly with questions of relative position of simple objects, such as points. It shares many methods and principles with combinatorics, Geometry has applications to many fields, including art, architecture, physics, as well as to other branches of mathematics. The earliest recorded beginnings of geometry can be traced to ancient Mesopotamia, the earliest known texts on geometry are the Egyptian Rhind Papyrus and Moscow Papyrus, the Babylonian clay tablets such as Plimpton 322. For example, the Moscow Papyrus gives a formula for calculating the volume of a truncated pyramid, later clay tablets demonstrate that Babylonian astronomers implemented trapezoid procedures for computing Jupiters position and motion within time-velocity space
Geometry
–
Visual checking of the
Pythagorean theorem for the (3, 4, 5)
triangle as in the
Chou Pei Suan Ching 500–200 BC.
Geometry
–
An illustration of
Desargues' theorem, an important result in
Euclidean and
projective geometry
Geometry
–
Geometry lessons in the 20th century
Geometry
–
A
European and an
Arab practicing geometry in the 15th century.
20.
Zigzag
–
In the Groove was a series of music video games that used a four-panel dance pad. The series was first distributed by Roxor Games during a time when four-panel dance games in the market were on the decline. As of October 18,2006, Konami has acquired the property rights to the series. The name In the Groove refers to three different things, the version of the game In the Groove, the PlayStation 2 and PC version of the game. In the Groove 2 is the game in this franchise. An In the Groove 3 was planned but canceled, due to a lawsuit with Konami. The gameplay mechanics of In the Groove are very similar to Konamis Dance Dance Revolution series, during normal gameplay, color arrows scroll upwards from the bottom of the screen and pass over a set of gray, stationary arrows near the top. When the scrolling arrows overlap the stationary ones, the player must step on the arrow on the dance platform. Longer arrows referred to as Holds must be held down for their length for them to count. Rolls, which appear to be spiky, green and yellow holds, mines deduct score and health if a players foot is on an arrow when they pass by the corresponding target arrow on-screen. On the players far side of the screen is a life bar and this is affected by the accuracy judgements the player receives for hitting arrows. Most machines have the Auto-Fail feature turned off - that is, any player whose life bar empties during a song can still finish playing that song, all machines will immediately fail any player who stops hitting arrows long enough to accrue 30 misses in a row. Similar to other dancing games, the player is judged for how accurately they step relative to when they were supposed to step. From best to worst, possible judgements are Fantastic, Excellent, Great, Decent, for holds and rolls, if the player finishes the hold or roll successfully, they receive a Yeah judgement. If not, the player receives a Bad, in the middle of the screen, the game keeps track of a players current combo, which is the length of the players most recent chain of good timing judgements. A players combo carries over one song to the next. However, if the player utilizes a USB card to track of their scores. The game has safety nets for players on easy difficulties that allows them to all of the songs on their credit without failing out
Zigzag
21.
Hunting
–
Hunting is the practice of killing or trapping animals, or pursuing or tracking them with the intent of doing so. Hunting wildlife or feral animals is most commonly done by humans for food, recreation, to predators that are dangerous to humans or domestic animals. Lawful hunting is distinguished from poaching, which is the killing, trapping or capture of the hunted species. The species that are hunted are referred to as game or prey and are usually mammals, Hunting can also be a means of pest control. However, hunting has also contributed to the endangerment, extirpation and extinction of many animals. The pursuit, capture and release, or capture for food of fish is called fishing, the practice of foraging or gathering materials from plants and mushrooms is also considered separate from hunting. The word hunt serves as both a noun and a verb, the noun has been dated to the early 12th century, act of chasing game, from the verb hunt. The meaning of a body of persons associated for the purpose of hunting with a pack of hounds is first recorded in the 1570s, meaning the act of searching for someone or something is from about 1600. The verb, Old English huntian to chase game, perhaps developed from hunta hunter, is related to hentan to seize, from Proto-Germanic huntojan, the general sense of search diligently is first recorded c. Hunting has a history and may well pre-date the rise of the species Homo sapiens. Evidence from western Kenya suggests that hunting has been occurring for more two million years. Furthermore, evidence exists that hunting may have one of the multiple environmental factors leading to the Holocene extinction of megafauna. North American megafauna extinction was coincidental with the Younger Dryas impact event, however, in other locations such as Australia, humans are thought to have played a very significant role in the extinction of the Australian megafauna that was widespread prior to human occupation. The closest surviving relatives of the species are the two species of Pan, the common chimpanzee and bonobos. Common chimpanzees have a diet that includes troop hunting behaviour based on beta males being led by an alpha male. Bonobos have also observed to occasionally engage in group hunting. With the establishment of language, culture, and religion, hunting became a theme of stories and myths, as well as such as dance. Hunting was a component of hunter-gatherer societies before the domestication of livestock
Hunting
–
Boar hunting,
Tacuinum Sanitatis (a medieval handbook on health and wellbeing) (14th century)
Hunting
–
Mughal aristocrats hunting a
blackbuck alongside an
Asiatic cheetah.
Hunting
–
Saharan rock art
Hunting
–
Inuit walrus hunters
22.
Naturalism (arts)
–
Realism in the arts is the attempt to represent subject matter truthfully, without artificiality and avoiding artistic conventions, implausible, exotic and supernatural elements. Realism has been prevalent in the arts at many periods, and is in part a matter of technique and training. In the visual arts, illusionistic realism is the depiction of lifeforms, perspective. Realist works of art may emphasize the mundane, ugly or sordid, such as works of realism, regionalism. There have been various movements in the arts, such as the opera style of verismo, literary realism, theatrical realism. The realism art movement in painting began in France in the 1850s, the realist painters rejected Romanticism, which had come to dominate French literature and art, with roots in the late 18th century. Realism is the precise, detailed and accurate representation in art of the appearance of scenes. Realism in this sense is also called naturalism, mimesis or illusionism, realistic art was created in many periods, and it is in large part a matter of technique and training, and the avoidance of stylization. It becomes especially marked in European painting in the Early Netherlandish painting of Jan van Eyck, however such realism is often used to depict, for example, angels with wings, which were not things the artists had ever seen in real life. It is the choice and treatment of matter that defines Realism as a movement in painting. The development of increasingly accurate representation of the appearances of things has a long history in art. It includes elements such as the depiction of the anatomy of humans and animals, of perspective and effects of distance. Ancient Greek art is recognised as having made great progress in the representation of anatomy. Pliny the Elders famous story of birds pecking at grapes painted by Zeuxis in the 5th century BC may well be a legend, roman portraiture, when not under too much Greek influence, shows a greater commitment to a truthful depiction of its subjects. The art of Late Antiquity famously rejected illusionism for expressive force, scientific methods of representing perspective were developed in Italy and gradually spread across Europe, and accuracy in anatomy rediscovered under the influence of classical art. As in classical times, idealism remained the norm, intriguingly, having led the development of illusionic painting, still life was to be equally significant in its abandonment in Cubism. The depiction of ordinary, everyday subjects in art also has a history, though it was often squeezed into the edges of compositions. However these objects are at least largely there because they carry layers of complex significance, pieter Bruegel the Elder pioneered large panoramic scenes of peasant life
Naturalism (arts)
–
Bonjour, Monsieur Courbet, 1854. A Realist painting by
Gustave Courbet.
Naturalism (arts)
–
Realist or illusionistic detail of the
convex mirror in the
Arnolfini Portrait by
Jan van Eyck, 1434
Naturalism (arts)
–
Lord Leighton 's
Cimabue's Celebrated Madonna of 1853-55 is at the end of a long tradition of illusionism in painting, but is not Realist in the sense of Courbet's work of the same period.
Naturalism (arts)
–
Woodcutting, miniature from a set of
Labours of the Months by
Simon Bening, c. 1550
23.
Bolas
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A bolas is a type of throwing weapon made of weights on the ends of interconnected cords, used to capture animals by entangling their legs. The Mapuche and the Inca army used them in battle, researchers have also found bolas in North America at the Calico Early Man Site. Gauchos use boleadoras to capture running cattle or game, depending on the exact design, the thrower grasps the boleadora by one of the weights or by the nexus of the cords. He gives the balls momentum by swinging them and then releases the boleadora, the weapon is usually used to entangle the animals legs, but when thrown with enough force might even inflict damage. Traditionally, Inuit have used bolas to hunt birds, fouling the birds in air with the lines of the bola, people of a Feather showed Belcher Island Inuit using bolas to hunt eider ducks on the wing. There is no design, most bolas have two or three balls, but there are versions of up to eight or nine. Some bolas have balls of equal weight, others vary the knot, gauchos use bolas made of braided leather cords with wooden balls or small leather sacks full of stones at the ends of the cords. The heavier weights fly at the front parallel to other, hit either side of the legs. Other unrelated versions include qilumitautit, the bolas of the Inuit, made of sinew and bone weights, BOLAS is the name of a web application for targeted researching, saving & sharing sources in projects. The name is used as a metaphor, Bolas are a typical weapon of ninja and various warriors in several anime and comics. In the 1984 action-adventure, romantic-comedy classic Romancing the Stone, Elaine Wilder is intentionally incapacitated by bolas thrown by an apparently playing child, the boy then abducts Elaine, recklessly driving her red Shelby Cobra away, setting the plot in motion. In The Mercenary, the protagonist is knocked down in mid-run by two men on either side of him who simultaneously threw their bolas under his feet. In the 1979 Bond film, Moonraker,007 checks in with Q at an MI6 base in Brazil where several weapons are being tested for near-future use, one of these is a bolas modified with balls that, once wrapped around a test dummy, explode on impact. A short time later, the balls from the bolas are instead used as mines during a river chase. The superhero Batman, in particular the animated version, makes use of bolas to ensnare criminals or trap supervillains, on Spider-Man and The Spectacular Spider-Man, bolas were among the weapons used by Kraven the Hunter. In the comedy film Kangaroo Jack, Jessie helps Charlie Carbone and Louis Booker construct their own aboriginal-style bolas and then trains them to throw and catch things with them. They fail to catch the kangaroo with the bolas, but in the end, Charlie uses his bolas to snag his nemesis, Frankie, in Smite, the Mayan God of the Moon, Xbalanque uses bolas as his weapon of choice. In the Game of Thrones episode You Win or You Die, in the Quick Draw McGraw animated cartoon “Bull-Leave Me”, Quick Draw and Baba Looey travel to Argentina to round up a runaway prize bull
Bolas
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A hunter using bolas while mounted on a horse.
24.
Kaolin
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Kaolinite /ˈkeɪəlᵻˌnaɪt/ is a clay mineral, part of the group of industrial minerals, with the chemical composition Al2Si2O54. It is a silicate mineral, with one tetrahedral sheet of silica linked through oxygen atoms to one octahedral sheet of alumina octahedra. Rocks that are rich in kaolinite are known as kaolin /ˈkeɪəlᵻn/ or china clay, the name kaolin is derived from Gaoling, a Chinese village near Jingdezhen in southeastern Chinas Jiangxi Province. The name entered English in 1727 from the French version of the word, kaolin, kaolinite has a low shrink–swell capacity and a low cation-exchange capacity. It is a soft, earthy, usually white, mineral, in many parts of the world it is colored pink-orange-red by iron oxide, giving it a distinct rust hue. Lighter concentrations yield white, yellow, or light orange colors, alternating layers are sometimes found, as at Providence Canyon State Park in Georgia, United States. Commercial grades of kaolin are supplied and transported as dry powder, kaolinite group clays undergo a series of phase transformations upon thermal treatment in air at atmospheric pressure. Below 100 °C, exposure to dry air will slowly remove liquid water from the kaolin, the end-state for this transformation is referred to as leather dry. Between 100 °C and about 550 °C, any remaining water is expelled from kaolinite. The end state for this transformation is referred to as bone dry, throughout this temperature range, the expulsion of water is reversible, if the kaolin is exposed to liquid water, it will be reabsorbed and disintegrate into its fine particulate form. Subsequent transformations are not reversible, and represent permanent chemical changes, endothermic dehydration of kaolinite begins at 550–600 °C producing disordered metakaolin, but continuous hydroxyl loss is observed up to 900 °C. Al2Si2O54 → Al2Si2O7 +2 H2O, further heating to 925–950 °C converts metakaolin to an aluminium-silicon spinel which is sometimes also referred to as a gamma-alumina type structure,2 Al2Si2O7 → Si3Al4O12 + SiO2. Upon calcination above 1050 °C, the spinel phase nucleates and transforms to platelet mullite, finally, at 1400 °C the needle form of mullite appears, offering substantial increases in structural strength and heat resistance. This is a structural but not chemical transformation, see stoneware for more information on this form. Kaolinite clay occurs in abundance in soils that have formed from the weathering of rocks in hot. Such climatically-related differences in mineral content are often used to infer changes in climates in the geological past. In the Institut National pour lEtude Agronomique au Congo Belge classification system, in the US the main kaolin deposits are found in central Georgia, on a stretch of the Atlantic Seaboard fall line between Augusta and Macon. The deposits were formed between the late Cretaceous and early Paleogene, about 100 million to 45 million years ago, in sediments derived from weathered igneous, Kaolin production in the US during 2011 was 5.5 million tonnes
Kaolin
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Kaolinite
Kaolin
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Kaolinite structure
25.
Jarosite
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Jarosite is a basic hydrous sulfate of potassium and iron with a chemical formula of KFe3+362. This sulfate mineral is formed in ore deposits by the oxidation of iron sulfides, jarosite is often produced as a byproduct during the purification and refining of zinc and is also commonly associated with acid mine drainage and acid sulfate soil environments. Jarosite has a crystal structure and is brittle, with basal cleavage, a hardness of 2. 5-3.5. It is translucent to opaque with a vitreous to dull luster and it can sometimes be confused with limonite or goethite with which it commonly occurs in the gossan. Jarosite is an analogue of the potassium aluminium sulfate, alunite. The alunite supergroup includes the alunite, jarosite, beudantite, crandallite and florencite subgroups, the alunite supergroup minerals are isostructural with each other and substitution between them occurs, resulting in several solid solution series. The alunite supergroup has the general formula AB326, in the alunite subgroup B is Al, and in the jarosite subgroup B is Fe3+. The beudantite subgroup has the general formula AB36, the crandallite subgroup AB325. H2O, in the jarosite-alunite series Al may substitute for Fe and a complete solid solution series between jarosite and alunite, KAl326, probably exists, but intermediate members are rare. The material from Kopec, Czech Republic, has about equal Fe and Al, in the jarosite-natrojarosite series Na substitutes for K to at least Na/K =1,2.4 but the pure sodium end member NaFe3+326 is not known in nature. Minerals with Na > K are known as natrojarosite and this indicates that there is a wide miscibility gap between the two end members, and it is doubtful whether a complete series exists between jarosite and natrojarosite. Hydroniumjarosite will only form from alkali-deficient solutions, as alkali-rich jarosite forms preferentially, divalent cations may also substitute for the monovalent cation K+ in the A site. Charge balance may be achieved in three ways, firstly by replacing two monovalent cations by one divalent cation, and leaving an A site vacancy, as in plumbogummite, Pb2+Al325. H2O, which is a member of the crandallite subgroup. Secondly by incorporating divalent ions in the B sites, as in osarizawaite, Pb2+Cu2+Al226, alunite subgroup, thirdly by replacing divalent anions with trivalent anions, as in beudantite, PbFe3+33−6, beudantite subgroup. Jarosite was first described in 1852 by August Breithaupt in the Barranco del Jaroso in the Sierra Almagrera, the name jarosite is also directly derived from Jara, the Spanish name of a yellow flower that belongs to the genus Cistus and grows in this sierra. The mineral and the flower have the same color, in 2004 jarosite was detected on Mars by a Mössbauer spectrometer on the MER-B rover, which has been interpreted as strong evidence that Mars once possessed large amounts of liquid water. Jarosite is also a generic term denoting an extensive family of compounds of the form AM362. In condensed matter physics and materials science they are renowned for containing layers with kagome lattice structure, alunite Iron sulfate Spirit Mars rover final embedding event Palache C. Dana’s system of mineralogy, v. II, 560–562, webmineral data Cornell University How an obscure mineral provided a vital clue to Martian water
Jarosite
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Jarosite on quartz from the Arabia District, Pershing County, Nevada
Jarosite
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Jarosite crystals from Sierra Peña Blanca, Aldama, Chihuahua, Mexico (5.6 x 3.1 x 1.6 cm)
26.
List of Stone Age art
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This list presents a small selection of the work of artists who lived during the time that writing hadnt as yet been invented and popularized in human societies. For fuller lists see Art of the Upper Paleolithic, Art of the Middle Paleolithic, Adam of Govrlevo, or Adam of Macedonia. At more than 7,000 years old, the sculpture is the oldest artifact found in the Republic of Macedonia, the artist depicts a sitting male body, and shows details of his spine, ribs, navel, and phallus. The piece is now exhibited in the Skopje City Museum, people have found thousands of these portable bird-shaped stone sculptures created by generations of North American sculptors. Bison Licking Insect Bite, an app,15, 000-year-old carved and engraved fragment of a spear-thrower made of reindeer antler, the piece depicts a member of the now extinct Bison species steppe wisent. The artist carved the bisons head turned to its right and licking itself as if bitten by an insect and its exhibited in the National Museum of Prehistory in Les Eyzies-de-Tayac-Sireuil, not far from where it was found. Löwenmensch, or Lion Man, is a sculpture that is both the oldest known animal-shaped sculpture in the world and, at 40,000 years. The sculpture is now housed in the Ulm Museum in Ulm, Mammoth spear thrower, a spear thrower carved by the artist into the form of a Mammoth, was discovered at the rock shelter of Montastruc, Tarn-et-Garonne, France. It is now exhibited in the British Museum, the artist has scratched or engraved a human figure – which appears to be female – as he or she decorated a fragment of a piece of limestone used as a lamp. From Courbet Cave, France, it now resides in the British Museum, perforated baton with low relief horse is from Abri de la Madeleine, an overhanging cliff situated near Tursac in France, and is stored in the British Museum. Pinhole Cave Man, or Pin Hole Cave Man, has become the name for an engraving of a human figure on a woolly rhinoceros rib bone. The piece was found in Pin Hole Cave, Creswell Crags, Derbyshire, England and this fragment of rib that the artist engraved with a horses head was discovered in the Robin Hood Cave in Creswell Crags, Derbyshire, England. It is the only animal-related Upper Paleolithic portable artwork ever found in Britain, Robin Hood Cave Horse is now housed in the British Museum. The Shigir Idol, a 11,000 years old wooden sculpture, resides in the Historic Exhibition Museum in Yekaterinburg, swimming Reindeer is a 13, 000-year-old sculpture of two swimming reindeer ornately carved from the tusk of a mammoth. The sculpture is now in the British Museum, the Alunda moose is an Neolithic artistic stone axe c.2000 B. C. that was found in Uppland, Sweden. It is displayed in the Swedish History Museum, bhimbetka rock shelters – the shelters, decorated with art from 30,000 years ago, contain the oldest evidence of artists exhibiting their work on the Indian sub-continent. These artworks are well over 20,000 years old, cantabria cave Çatalhöyük – probably the best preserved large Neolithic site, its artwork includes murals, figurines, and depictions of animals. The Seated Woman of Çatalhöyük was found here, chauvet Cave – some of the earliest cave paintings known, and considered among the most important prehistoric art sites
List of Stone Age art
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This
Bradshaw rock painting from Australia shows tasseled costumed figures in various poses or actions.
List of Stone Age art
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Bison Licking Insect Bite, in carved
antler. In the al Museum of Prehistory,
Les Eyzies-de-Tayac-Sireuil
List of Stone Age art
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Elaborately decorated
stone ball, 3200–2500 BC, National Museums of Scotland
List of Stone Age art
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Magdalenian Horse, c. 15,000 BCE,
Musée d'Archéologie Nationale, France
