1.
Reflecting pool
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A reflecting pool or reflection pool is a water feature found in gardens, parks, and at memorial sites. It usually consists of a pool of water, undisturbed by fountain jets. Reflecting pools are designed with the outer basin floor at the rim slightly deeper than the central area to suppress wave formation. They can be as small as a bath to as large as a major civic element. Their origins are from ancient Persian gardens, the Miroir deau on Place de la Bourse in Bordeaux, France, is the worlds largest reflecting pool. The Mughal garden reflecting pools at the Taj Mahal in Agra, India Chehel Sotoun in Iran The Lincoln Memorial Reflecting Pool, the modernist Palácio do Planalto and Palácio da Alvorada in Brasília, Brazil The King Center in Atlanta, Georgia commemorating Dr. Martin Luther King, Jr. The National September 11 Memorial & Museum, located in New York City, has two reflecting pools on the location where the Twin Towers stood
2.
Washington, D.C.
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Washington, D. C. formally the District of Columbia and commonly referred to as Washington, the District, or simply D. C. is the capital of the United States. The signing of the Residence Act on July 16,1790, Constitution provided for a federal district under the exclusive jurisdiction of the Congress and the District is therefore not a part of any state. The states of Maryland and Virginia each donated land to form the federal district, named in honor of President George Washington, the City of Washington was founded in 1791 to serve as the new national capital. In 1846, Congress returned the land ceded by Virginia, in 1871. Washington had an population of 681,170 as of July 2016. Commuters from the surrounding Maryland and Virginia suburbs raise the population to more than one million during the workweek. The Washington metropolitan area, of which the District is a part, has a population of over 6 million, the centers of all three branches of the federal government of the United States are in the District, including the Congress, President, and Supreme Court. Washington is home to national monuments and museums, which are primarily situated on or around the National Mall. The city hosts 176 foreign embassies as well as the headquarters of international organizations, trade unions, non-profit organizations, lobbying groups. A locally elected mayor and a 13‑member council have governed the District since 1973, However, the Congress maintains supreme authority over the city and may overturn local laws. D. C. residents elect a non-voting, at-large congressional delegate to the House of Representatives, the District receives three electoral votes in presidential elections as permitted by the Twenty-third Amendment to the United States Constitution, ratified in 1961. Various tribes of the Algonquian-speaking Piscataway people inhabited the lands around the Potomac River when Europeans first visited the area in the early 17th century, One group known as the Nacotchtank maintained settlements around the Anacostia River within the present-day District of Columbia. Conflicts with European colonists and neighboring tribes forced the relocation of the Piscataway people, some of whom established a new settlement in 1699 near Point of Rocks, Maryland. 43, published January 23,1788, James Madison argued that the new government would need authority over a national capital to provide for its own maintenance. Five years earlier, a band of unpaid soldiers besieged Congress while its members were meeting in Philadelphia, known as the Pennsylvania Mutiny of 1783, the event emphasized the need for the national government not to rely on any state for its own security. However, the Constitution does not specify a location for the capital, on July 9,1790, Congress passed the Residence Act, which approved the creation of a national capital on the Potomac River. The exact location was to be selected by President George Washington, formed from land donated by the states of Maryland and Virginia, the initial shape of the federal district was a square measuring 10 miles on each side, totaling 100 square miles. Two pre-existing settlements were included in the territory, the port of Georgetown, Maryland, founded in 1751, many of the stones are still standing
3.
National Mall
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The National Mall is a national park in downtown Washington, D. C. the capital of the United States. The National Park Service administers the National Mall, which is part of its National Mall, a smaller designation, sometimes referred to as the Mall proper, excludes both the Capitol grounds and the Washington Monument grounds, applying only to an area between them. The National Mall contains a number of museums and memorials and receives approximately 24 million visitors each year, in his 1791 plan for the future city of Washington, D. C. The National Mall occupies the site of this grand avenue. The Washington Monument stands near the site of its namesakes equestrian statue. Mathew Careys 1802 map is reported to be the first to name the area west of the United States Capitol as the Mall, during the early 1850s, architect and horticulturist Andrew Jackson Downing designed a landscape plan for the Mall. Over the next century, federal agencies developed several naturalistic parks within the Mall in accordance with Downings plan. Two such areas were Henry Park and Seaton Park, in addition, railroad tracks crossed the Mall on 6th Street, west of the Capitol. Near the tracks, a market and a railroad station rose on the north side of the Mall. Greenhouses belonging to the U. S. Botanic Garden appeared near the east end of the Mall, the plan differed from LEnfants by replacing the 400 feet wide grand avenue with a 300 feet wide vista containing a long and broad expanse of grass. Four rows of American elm trees planted fifty feet apart between two paths or streets would line each side of the vista. Buildings housing cultural and educational institutions constructed in the Beaux-Arts style would line each outer path or street, on the opposite side of the path or street from the elms. In subsequent years, the vision of the McMillan plan was followed with the planting of American elms. In accordance with a plan that it completed in 1976, the NPS converted the two innermost boulevards into gravel walking paths, the two outermost boulevards remain paved and open to vehicular traffic. Although the Navy intended the buildings to provide quarters for the United States military during World War I. Much of the area then became Constitution Gardens, which was dedicated in 1976. From the 1970s to 1994, a model of a triceratops named Uncle Beazley stood on the Mall in front of the National Museum of Natural History. The life-size statue, which is now located at the National Zoological Park in Northwest Washington, in 2003, the 108th United States Congress enacted the Commemorative Works Clarification and Revision Act
4.
Lincoln Memorial
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The Lincoln Memorial is an American national monument built to honor the 16th President of the United States, Abraham Lincoln. It is located on the end of the National Mall in Washington. Dedicated in 1922, it is one of several built to honor an American president. It has always been a major tourist attraction and since the 1930s has been a symbolic center focused on race relations and it has been listed on the National Register of Historic Places since October 15,1966. It is open to the public 24 hours a day, in 2007, it was ranked seventh on the List of Americas Favorite Architecture by the American Institute of Architects. Since 2010, approximately 6 million people visit the memorial annually, the first public memorial to Abraham Lincoln in Washington, D. C. was a statue by Lot Flannery erected in front of the District of Columbia City Hall in 1868, three years after Lincolns assassination. Demands for a national memorial had been voiced since the time of Lincolns death. In 1867, Congress passed the first of many bills incorporating a commission to erect a monument for the sixteenth president, an American sculptor, Clark Mills, was chosen to design the monument. Subscriptions for the project were insufficient, the first five bills, proposed in the years 1901,1902, and 1908, met with defeat because of opposition from Speaker Joe Cannon. The sixth bill, introduced on December 13,1910, passed, the Lincoln Memorial Commission had its first meeting the following year and U. S. President William H. Taft was chosen as the commissions president. Progress continued at a pace and by 1913 Congress had approved of the Commissions choice of design. There were questions regarding the commissions plan, many thought that architect Henry Bacons Greek temple design was far too ostentatious for a man of Lincolns humble character. Instead they proposed a simple log cabin shrine, the site too did not go unopposed. The recently reclaimed land in West Potomac Park was seen by many to be too swampy or too inaccessible. Other sites, such as Union Station, were put forth, furthermore, the Potomac Park site had already been designated in the McMillan Plan of 1901 to be the location of a future monument comparable to that of the Washington Monument. With Congressional approval and a $300,000 allocation, the project got underway, on February 12,1914, a dedication ceremony was conducted and the following month the actual construction began. Work progressed steadily according to schedule, some changes were made to the plan. The statue of Lincoln, originally designed to be 10 feet tall, was enlarged to 19 feet to prevent it from being overwhelmed by the huge chamber
5.
Washington Monument
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It is the tallest monumental column in the world if all are measured above their pedestrian entrances. Although the stone structure was completed in 1884, internal ironwork, the knoll, a difference in shading of the marble, visible approximately 150 feet or 27% up, shows where construction was halted and later resumed with marble from a different source. The original design was by Robert Mills, but he did not include his proposed colonnade due to a lack of funds, despite many proposals to embellish the obelisk, only its original flat top was altered to a pointed marble pyramidion, in 1884. Upon completion, it became the worlds tallest structure, a previously held by the Cologne Cathedral. The monument held this designation until 1889, when the Eiffel Tower was completed in Paris, the monument was damaged during the 2011 Virginia earthquake and Hurricane Irene in the same year and remained closed to the public while the structure was assessed and repaired. After 32 months of repairs, the National Park Service and the Trust for the National Mall reopened the Washington Monument to visitors on May 12,2014, as of September 2016, the monument has been closed indefinitely due to reliability issues with the current elevator system. On December 2,2016, the National Park Service announced that the monument would be closed until 2019 in order to modernize the elevator. The $2 to 3 million project will correct the elevators ongoing mechanical, electrical and computer issues, the National Park Service has also requested funding in its FY2017 Presidents Budget Request to construct a permanent screening facility for the Washington Monument. The Washington Monument is expected to re-open to visitors in 2019, even his erstwhile enemy King George III called him the greatest character of the age. At his death in 1799 he left a legacy, he exemplified the core ideals of the American Revolution. Washington was the unchallenged public icon of American military and civic patriotism, starting with victory in the Revolution, there were many proposals to build a monument to Washington. After his death, Congress authorized a memorial in the national capital. The Republicans were dismayed that Washington had become the symbol of the Federalist Party and they also blocked his image on coins or the celebration of his birthday. Further political squabbling, along with the North-South division on the Civil War, by that time, Washington had the image of a national hero who could be celebrated by both North and South, and memorials to him were no longer controversial. As early as 1783, the Continental Congress had resolved That an equestrian statue of George Washington be erected at the place where the residence of Congress shall be established, currently, there are two equestrian statues of President Washington in Washington, D. C. Ten days after Washingtons death, a Congressional committee recommended a different type of monument, John Marshall, a Representative from Virginia proposed that a tomb be erected within the Capitol. Progress toward a memorial began in 1832. That year, which marked the 100th anniversary of Washingtons birth, in 1836, after they had raised $28,000 in donations, they announced a competition for the design of the memorial
6.
Henry Bacon
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Henry Bacon was an American Beaux-Arts architect who is best remembered for the Lincoln Memorial in Washington, D. C. which was his final project. Henry Bacon was born in Watseka, Illinois. C, the Confederate Memorial in Wilmington, North Carolina, and many other distinguished public buildings and monuments. In Turkey, he met his wife, Laura Florence Calvert. He traveled with another student, Albert Kahn who would become a leading industrial architect. In 1897, Bacon left MMW to found, with James Brite, an architect from the firm. There Brite was in charge of financial, administrative, and contracting aspects of the partnership, while Bacon was in charge of the architectural design and construction. The La Fetra Mansion was designed and built by Bacon, and his design was published in the September 1901 issue of Architecture, the LeFetra Mansion fully exhibits Bacons preference for Beaux-Arts Neo-Greek and Roman architecture style. His simple and elegant lines and his skill in dimensions and proportions gave rise to a stately elegance, peaceful tranquility, and a sense of divine protection. In 1897, Bacon was also approached by a group which was organized with the intent to raise public and private funds to build a monument in Washington, DC to memorialize Abraham Lincoln. The Brite and Bacon Partnership dissolved in 1902 partly resulting from Brites disagreement over Bacons passion, after that, Bacon practiced under his own name with significant success, building a large number of famous public buildings and monuments, until his death in 1924. In 1913, Bacon was elected into the National Academy of Design as an Associate member, Bacon was very active as a designer of monuments and settings for public sculpture. He designed the Court of the Four Seasons, for the 1915 Panama-Pacific Exposition in San Francisco, olin Memorial Library, one of Bacons buildings at Wesleyan University, houses many of Bacons documents and blueprints of the Lincoln Memorial. Bacon rarely found time to design for private residences, there are three known residential projects that are clearly his work. The first is the La Fetra Mansion in Summit, New Jersey, designed, Bacon skillfully integrated into a residential setting many of his signature Greek Revival and Roman Renaissance elements and proportions. The resulting elegance was astoundingly masterful, the La Fetra Mansion was commissioned by industrialist Harold A. La Fetra of the Royal Baking Powder Company, which merged with RJR Nebisco. The second is a mountain resort Donald McRae House in Wilmington. Its exterior bears similarity the La Fetra Mansion Bacon served as a member of the U. S, commission of Fine Arts from 1921 until his death in 1924
7.
Litre
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The litre or liter is an SI accepted metric system unit of volume equal to 1 cubic decimetre,1,000 cubic centimetres or 1/1,000 cubic metre. A cubic decimetre occupies a volume of 10×10×10 centimetres and is equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word litre is derived from an older French unit, the litron, whose name came from Greek — where it was a unit of weight, not volume — via Latin, and which equalled approximately 0.831 litres. The litre was also used in subsequent versions of the metric system and is accepted for use with the SI. The spelling used by the International Bureau of Weights and Measures is litre, the less common spelling of liter is more predominantly used in American English. One litre of water has a mass of almost exactly one kilogram. Subsequent redefinitions of the metre and kilogram mean that this relationship is no longer exact, a litre is defined as a special name for a cubic decimetre or 10 centimetres ×10 centimetres ×10 centimetres. Hence 1 L ≡0.001 m3 ≡1000 cm3, from 1901 to 1964, the litre was defined as the volume of one kilogram of pure water at maximum density and standard pressure. The kilogram was in turn specified as the mass of a platinum/iridium cylinder held at Sèvres in France and was intended to be of the mass as the 1 litre of water referred to above. It was subsequently discovered that the cylinder was around 28 parts per million too large and thus, during this time, additionally, the mass-volume relationship of water depends on temperature, pressure, purity and isotopic uniformity. In 1964, the definition relating the litre to mass was abandoned in favour of the current one, although the litre is not an official SI unit, it is accepted by the CGPM for use with the SI. CGPM defines the litre and its acceptable symbols, a litre is equal in volume to the millistere, an obsolete non-SI metric unit customarily used for dry measure. The litre is often used in some calculated measurements, such as density. One litre of water has a mass of almost exactly one kilogram when measured at its maximal density, similarly,1 millilitre of water has a mass of about 1 g,1,000 litres of water has a mass of about 1,000 kg. It is now known that density of water depends on the isotopic ratios of the oxygen and hydrogen atoms in a particular sample. The litre, though not an official SI unit, may be used with SI prefixes, the most commonly used derived unit is the millilitre, defined as one-thousandth of a litre, and also often referred to by the SI derived unit name cubic centimetre. It is a commonly used measure, especially in medicine and cooking, Other units may be found in the table below, where the more often used terms are in bold
8.
American Recovery and Reinvestment Act of 2009
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Developed in response to the Great Recession, the ARRAs primary objective was to save existing jobs and create new ones as soon as possible. Other objectives were to provide relief programs for those most affected by the recession and invest in infrastructure, education, health. The approximate cost of the stimulus package was estimated to be $787 billion at the time of passage. Since its inception, the impact of the stimulus has been a subject of disagreement, studies on its effects have produced a range of conclusions, from strongly positive to strongly negative and all reactions in between. IGM Forum asked the question to leading economists in 2014. This new poll found 82% of leading economists strongly agreed or agreed that unemployment was lower in 2010 than it would have been without the stimulus. Revisiting the question about the benefits outweighing the costs, 56% strongly agreed or agreed that it did, 23% were uncertain, both the House and the Senate versions of the bills were primarily written by Democratic Congressional committee leaders and their staffs. Because work on the bills started before President Obama officially took office on January 20,2009, the House version of the bill, H. R.1, was introduced on January 26,2009. It was sponsored by Democrat David Obey, the House Appropriations Committee chairman, on January 23, Speaker of the House Nancy Pelosi said that the bill was on track to be presented to President Obama for him to sign into law before February 16,2009. Although 206 amendments were scheduled for floor votes, they were combined into only 11, on January 28,2009, the House passed the bill by a 244–188 vote. All but 11 Democrats voted for the bill, and 177 Republicans voted against it, the senate version of the bill, S.1, was introduced on January 6,2009, and later substituted as an amendment to the House bill, S. Amdt. It was sponsored by Harry Reid, the Majority Leader, co-sponsored by 16 other Democrats and Joe Lieberman, the Senate then began consideration of the bill starting with the $275 billion tax provisions in the week of February 2,2009. Republicans proposed several amendments to the bill directed at increasing the share of tax cuts, the Senate called a special Saturday debate session for February 7 at the urging of President Obama. The Senate voted, 61–36 on February 9 to end debate on the bill, on February 10, the Senate voted 61–37 All the Democrats voted in favor, but only three Republicans voted in favor. Specter switched to the Democratic Party later in the year, at one point, the Senate bill stood at $838 billion. Senate Republicans forced a near unprecedented level of changes in the House bill, the biggest losers were states and the low income workers with major gains for the elderly and high income tax-payers. Additional debt costs would add about $350 billion or more over 10 years, many provisions were set to expire in two years. The House had more funds appropriated for education, infrastructure and for aid to low income workers, direct cash payments Senate – $17 billion to give one-time $300 payments to recipients of Supplemental Security Income and Social Security, and veterans receiving disability and pensions
9.
National Park Service
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It was created on August 25,1916, by Congress through the National Park Service Organic Act and is an agency of the United States Department of the Interior. As of 2014, the NPS employs 21,651 employees who oversee 417 units, the National Park Service celebrated its centennial in 2016. National parks and national monuments in the United States were originally individually managed under the auspices of the Department of the Interior, the movement for an independent agency to oversee these federal lands was spearheaded by business magnate and conservationist Stephen Mather, as well as J. Horace McFarland. With the help of journalist Robert Sterling Yard, Mather ran a publicity campaign for the Department of the Interior and they wrote numerous articles that praised the scenic and historic qualities of the parks and their possibilities for educational, inspirational, and recreational benefits. This campaign resulted in the creation of a National Park Service, Mather became the first director of the newly formed NPS. On March 3,1933, President Herbert Hoover signed the Reorganization Act of 1933, the act would allow the President to reorganize the executive branch of the United States government. It wasnt until later that summer when the new President, Franklin D. Roosevelt, President Roosevelt agreed and issued two Executive orders to make it happen. In 1951, Conrad Wirth became director of the National Park Service, the demand for parks after the end of the World War II had left the parks overburdened with demands that could not be met. In 1952, with the support of President Dwight D. Eisenhower, he began Mission 66, New parks were added to preserve unique resources and existing park facilities were upgraded and expanded. In 1966, as the Park Service turned 50 years old, emphasis began to turn from just saving great and wonderful scenery, Director George Hartzog began the process with the creation of the National Lakeshores and then National Recreation Areas. Since its inception in 1916, the National Park Service has managed each of the United States national parks, Yellowstone National Park was the first national park in the United States. In 1872, there was no government to manage it. Yosemite National Park began as a park, the land for the park was donated by the federal government to the state of California in 1864 for perpetual conservation. Yosemite was later returned to federal ownership, at first, each national park was managed independently, with varying degrees of success. In Yellowstone, the staff was replaced by the U. S. Army in 1886. Due to the irregularities in managing these national treasures, Stephen Mather petitioned the government to improve the situation. In response, Secretary of the Interior Franklin K. Lane challenged him to lobby for creating a new agency, Mather was successful with the ratification of the National Park Service Organic Act in 1916. Later, the agency was given authority over other protected areas, the National Park System includes all properties managed by the National Park Service
10.
Water stagnation
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Water stagnation occurs when water stops flowing. Stagnant water can be an environmental hazard. Malaria and dengue are among the dangers of stagnant water. Stagnant water can be dangerous for drinking because it provides a better incubator than running water for many kinds of bacteria, stagnant water is often contaminated with human and animal feces, particularly in deserts or other areas of low rain. Stagnant water may be classified into the basic, although overlapping, types, Water body stagnation Surface. The water may be trapped in human artifacts, as well as in natural containers, such as tree trunks. To avoid ground and surface water stagnation, drainage of surface, areas with a shallow water table are more susceptible to ground water stagnation due to the lower availability of natural soil drainage. Some plants prefer flowing water, while others, such as lotuses, various anaerobic bacteria are commonly found in stagnant water. For this reason, pools of stagnant water have historically used in processing hemp and some other fiber crops. Several weeks of soaking makes bast fibers easily separable due to bacterial, dragonfly nymphs Fly maggots Mosquito larvae Nepidae Algae Biofilm A number of species of frogs prefer stagnant water. Some species of turtles Mata mata Wetland Residence time distribution Water pollution
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