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Musical Fountain
A musical fountain, also known as a fairy fountain, prismatic fountain or dancing fountain, is a type of choreographed fountain that creates aesthetic designs as a form of entertainment. The displays are commonly synchronised to music and also feature lighting effects that are refracted and reflected by the moving water. Contemporary multimedia fountains can include lasers, video projection and three-dimensional imagery. Installations can be large scale, employing hundreds of water jets and lights, and costing into the millions of dollars. Techniques tend to be complex, and require mechanical, hydraulic, electrical, and electronic components that are usually kept out of view. Fountains that are choreographed to music The earliest musical fountains were played manually by a live operator, who usually controlled pumps or valves and sometimes lights by way of switches on a control panel. Music was almost always live. Later, choreography could be prerecorded on a punched paper ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Budapest
Budapest (, ; ) is the capital and most populous city of Hungary. It is the ninth-largest city in the European Union by population within city limits and the second-largest city on the Danube river; the city has an estimated population of 1,752,286 over a land area of about . Budapest, which is both a city and county, forms the centre of the Budapest metropolitan area, which has an area of and a population of 3,303,786; it is a primate city, constituting 33% of the population of Hungary. The history of Budapest began when an early Celtic settlement transformed into the Roman town of Aquincum, the capital of Lower Pannonia. The Hungarians arrived in the territory in the late 9th century, but the area was pillaged by the Mongols in 1241–42. Re-established Buda became one of the centres of Renaissance humanist culture by the 15th century. The Battle of Mohács, in 1526, was followed by nearly 150 years of Ottoman rule. After the reconquest of Buda in 1686, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Player Piano
A player piano (also known as a pianola) is a self-playing piano containing a pneumatic or electro-mechanical mechanism, that operates the piano action via programmed music recorded on perforated paper or metallic rolls, with more modern implementations using MIDI. The rise of the player piano grew with the rise of the mass-produced piano for the home, in the late 19th and early 20th century. Sales peaked in 1924, then declined, as the improvement in phonograph recordings due to electrical recording methods developed in the mid-1920s. The advent of electrical amplification in home music reproduction via radio in the same period helped cause their eventual decline in popularity, and the stock market crash of 1929 virtually wiped out production. History In 1896, Edwin S. Votey invented the first practical pneumatic piano player, called the Pianola. This mechanism came into widespread use in the 20th century, and was all-pneumatic, with foot-operated bellows providing a sour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1939 New York World's Fair
The 1939–40 New York World's Fair was a world's fair held at Flushing Meadows–Corona Park in Queens, New York, United States. It was the second-most expensive American world's fair of all time, exceeded only by St. Louis's Louisiana Purchase Exposition of 1904. Many countries around the world participated in it, and over 44 million people attended its exhibits in two seasons. It was the first exposition to be based on the future, with an opening slogan of "Dawn of a New Day", and it allowed all visitors to take a look at "the world of tomorrow". When World War II began four months into the 1939 World's Fair, many exhibits were affected, especially those on display in the pavilions of countries under Axis occupation. After the close of the fair in 1940, many exhibits were demolished or removed, though some buildings were retained for the 1964–1965 New York World's Fair, held at the same site. Planning In 1935, at the height of the Great Depression, a group of New Yo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memorial Day
Memorial Day (originally known as Decoration Day) is a federal holiday in the United States for mourning the U.S. military personnel who have fought and died while serving in the United States armed forces. It is observed on the last Monday of May; from 1868 to 1970 it was observed on May 30. Many people visit cemeteries and memorials on Memorial Day to honor and mourn those who fought and died while serving in the U.S. military. Many volunteers place American flags on the graves of military personnel in national cemeteries. Memorial Day is also considered the unofficial beginning of summer in the United States. The first national observance of Memorial Day occurred on May 30, 1868. Then known as Decoration Day, the holiday was proclaimed by Commander in Chief John A. Logan of the Grand Army of the Republic to honor the Union soldiers who had died in the Civil War. This national observance was preceded by many local ones between the end of the Civil War and Logan's declara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garfield Park (Indianapolis)
Garfield Park is a regional city park in Indianapolis, Indiana, United States. Established in the late 19th century, it is the oldest city park in Indianapolis and is on the National Register of Historic Places. The park is located at the confluence of Pleasant Run and Bean Creeks on the near Southside of Indianapolis. The Conservatory and Sunken Gardens are located in the eastern portion of the park. The noted landscape architect George Edward Kessler designed the Sunken Gardens along with many of the other features of the park as part of his Park and Boulevard Plan for the city. Geography Garfield Park is bounded by Raymond Street on the north; South Garfield Drive, East Garfield Drive, and Shelby Street on the east; Southern Avenue on the south; and the Louisville and Indiana Railroad tracks on the west. Emmerich Manual High School lies directly to the west on the other side of the railroad track embankment. Much of the park is rolling fields, due at least in part to its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indianapolis
Indianapolis (), colloquially known as Indy, is the state capital and most populous city of the U.S. state of Indiana and the seat of Marion County. According to the U.S. Census Bureau, the consolidated population of Indianapolis and Marion County was 977,203 in 2020. The "balance" population, which excludes semi-autonomous municipalities in Marion County, was 887,642. It is the 15th most populous city in the U.S., the third-most populous city in the Midwest, after Chicago and Columbus, Ohio, and the fourth-most populous state capital after Phoenix, Arizona, Austin, Texas, and Columbus. The Indianapolis metropolitan area is the 33rd most populous metropolitan statistical area in the U.S., with 2,111,040 residents. Its combined statistical area ranks 28th, with a population of 2,431,361. Indianapolis covers , making it the 18th largest city by land area in the U.S. Indigenous peoples inhabited the area dating to as early as 10,000 BC. In 1818, the Lenape relinquished their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West End, New Orleans
West End (also referred to as West Lakeview) is a neighborhood of the city of New Orleans. A subdistrict of the Lakeview District Area, its boundaries as defined by the City Planning Commission are: Lake Pontchartrain to the north, the New Basin Canal and Pontchartrain Boulevard to the east, Veterans Boulevard to the south, and the 17th Street Canal to the west. The area was largely built on land reclaimed from Lake Pontchartrain. It is a commercial seafood and recreational boating hub for the city and has been known for its seafood restaurants. In recent years, the area has seen large condominium-complex developments built which overlook the Lake, marinas, and centrally located West End Park. The majority of the land and marinas at West End are managed by the New Orleans Municipal Yacht Harbor Management Corporation, a public-benefit corporation of the City of New Orleans, with much of it leased to private interests and individuals. The area is immediately north of the site ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City Park, Denver
City Park is an urban park and neighborhood in Denver, Colorado. The park is and is located in east-central Denver. The park contains the Denver Zoo, the Denver Museum of Nature and Science, Ferril and Duck Lakes, and a boathouse. City Park is also the name of the neighborhood that contains the park, though the park is the vast majority of the neighborhood. To the immediate north of the park is the City Park Golf Course. City Park is the largest park in Denver. Geography The park is located in east-central Denver slightly more than a mile east of downtown. The park is a mile long and three-quarters of a mile wide. The park's boundaries are: * West-York Street * South-17th Avenue * East-Colorado Boulevard * North-23rd Avenue. The City Park neighborhood has the same boundaries except for having Colfax Avenue as its southern boundary, which is two blocks south of 17th Avenue. Therefore, the entirety of the neighborhood is only two blocks wide, but about a mile long. The area in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prague
Prague ( ; cs, Praha ; german: Prag, ; la, Praga) is the capital and largest city in the Czech Republic, and the historical capital of Bohemia. On the Vltava river, Prague is home to about 1.3 million people. The city has a temperate oceanic climate, with relatively warm summers and chilly winters. Prague is a political, cultural, and economic hub of central Europe, with a rich history and Romanesque, Gothic, Renaissance and Baroque architectures. It was the capital of the Kingdom of Bohemia and residence of several Holy Roman Emperors, most notably Charles IV (r. 1346–1378). It was an important city to the Habsburg monarchy and Austro-Hungarian Empire. The city played major roles in the Bohemian and the Protestant Reformations, the Thirty Years' War and in 20th-century history as the capital of Czechoslovakia between the World Wars and the post-war Communist era. Prague is home to a number of well-known cultural attractions, many of which survived the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
František Křižík
František Křižík (; July 8, 1847 – January 22, 1941) was a Czech inventor, electrical engineer, and entrepreneur. Biography Křižík was born into a family in Plánice. In spite of his background, Křižík managed in 1866 to study engineering at the Technical University of Prague ČVUT. Křižík is considered the pioneer of practical electrical engineering and in electrification of Bohemia and Austro-Hungarian empire. At the time he was often compared to Thomas Edison. In 1878 Křižík invented a remotely operated signaling device to protect against collision between trains. Křižík's cores are magnetic solenoids cores shaped so as to insure an approximately uniform pull in different positions in the solenoid. His first experiments in Plzeň resulted in the invention in 1880 of the automatic electric arc lamp, the so-called "Plzen Lamp" which was displayed at the International Exposition of Electricity in Paris in 1881. This lamp, with self-adjusting brushes, won t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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