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Backboard (tennis)
A tennis backboard is a simple wall usually made from some kind of fiberboard and located at a tennis court. It should have a tennis net either drawn or painted at the proper height of 3 ft 6 in. It is designed to allow a single person to practice by hitting a tennis ball against the wall so the ball is returned, much like a second player would return it. Its invention is credited to tennis player Mary Browne in 1926 during her tenure as a coach at the University of Chicago. The main advantage of the backboard is that it provides a realistic and challenging emulation of regulation tennis, while also being more enjoyable. In 1938 a restraining line was added so that players would not stand unrealistically close to the wall. Many players are said to have been given their first basic strokes by playing for hours at public courts backboards. Though the backboard's death has been touted more than once, many still believe that it is an important tool to basic skill and stroke develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis
Tennis is a racket sport that is played either individually against a single opponent ( singles) or between two teams of two players each ( doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball validly will not gain a point, while the opposite player will. Tennis is an Olympic sport and is played at all levels of society and at all ages. The sport can be played by anyone who can hold a racket, including wheelchair users. The modern game of tennis originated in Birmingham, England, in the late 19th century as lawn tennis. It had close connections both to various field (lawn) games such as croquet and bowls as well as to the older racket sport today called real tennis. The rules of modern tennis have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiberboard
Fiberboard (American English) or fibreboard (British English) is a type of engineered wood product that is made out of wood fibers. Types of fiberboard (in order of increasing density) include particle board or low-density fiberboard (LDF), medium-density fiberboard (MDF), and hardboard (high-density fiberboard, HDF). It is sometimes used as a synonym for particle board, but particle board usually refers to low-density fiberboard. Plywood is not a type of fiberboard, as it is made of thin sheets of wood, not wood fibers or particles. Fiberboard, particularly medium-density fiberboard, is heavily used in the furniture industry. For pieces that will be visible, a veneer of wood is often glued onto fiberboard to give it the appearance of conventional wood. In the packaging industry, the term "fiberboard" is often used to describe a tough kraft-based paperboard or corrugated fiberboard for boxes. "Fiberboard" is also an intermediate product, an output of a pulp mill used as input ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis Court
A tennis court is the venue where the sport of tennis is played. It is a firm rectangular surface with a low net stretched across the centre. The same surface can be used to play both doubles and singles matches. A variety of surfaces can be used to create a tennis court, each with its own characteristics which affect the playing style of the game. Dimensions The dimensions of a tennis court are defined and regulated by the International Tennis Federation (ITF) governing body and are written down in the annual 'Rules of Tennis' document. The court is long. Its width is for singles matches and for doubles matches. The service line is from the net. Additional clear space around the court is needed in order for players to reach overrun balls for a total of wide and long. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. The net is high at the posts, and high in the center. The net posts are outside the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis Ball
A tennis ball is a ball designed for the sport of tennis. Tennis balls are fluorescent yellow in organised competitions, but in recreational play can be virtually any color. Tennis balls are covered in a fibrous felt which modifies their aerodynamic properties, and each has a white curvilinear oval covering it. Specifications Modern tennis balls must conform to certain criteria for size, weight, deformation, and bounce criteria to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as . Balls must have masses in the range . Yellow and white are the only colors approved by the ITF, and most balls produced are a fluorescent yellow known as "optic yellow", first introduced in 1972 following research demonstrating they were more visible on television. Tennis balls are filled with air and are surfaced by a uniform felt-covered rubber compound. The felt delays flow separation in the boundary layer which reduces aerodynamic drag an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary Browne
Mary Kendall Browne (June 3, 1891 – August 19, 1971) was an American professional tennis player and an amateur golfer. She was born in Ventura County, California. Biography According to A. Wallis Myers of The Daily Telegraph and the Daily Mail, Browne was ranked in the world top 10 in 1921 (when the rankings began), 1924, and 1926, reaching a career high of world no. 3 in those rankings in 1921. Browne was included in the year-end top 10 rankings issued by the United States Lawn Tennis Association in 1913 (when the rankings began), 1914, 1921, 1924, and 1925. She was the top-ranked U.S. player in 1914. She also played golf and was runner-up at the 1924 U.S. Women's Amateur to champion Dorothy Campbell Hurd. She took part in the 1925 and 1926 editions of the Wightman Cup, an annual women's team tennis competition between the United States and Great Britain. Afterwards, she became a coach at the University of Chicago, where she is credited with inventing the backboard for u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Chicago
The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park neighborhood. The University of Chicago is consistently ranked among the best universities in the world and it is among the most selective in the United States. The university is composed of an undergraduate college and five graduate research divisions, which contain all of the university's graduate programs and interdisciplinary committees. Chicago has eight professional schools: the Law School, the Booth School of Business, the Pritzker School of Medicine, the Crown Family School of Social Work, Policy, and Practice, the Harris School of Public Policy, the Divinity School, the Graham School of Continuing Liberal and Professional Studies, and the Pritzker School of Molecular Engineering. The university has additional campuses and centers in London, Paris, Beijing, Delhi, and Hong Kong, as well as in downtown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital subscribers. It also is a producer of popular podcasts such as '' The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national " newspaper of record". For print it is ranked 18th in the world by circulation and 3rd in the U.S. The paper is owned by the New York Times Company, which is publicly traded. It has been governed by the Sulzberger family since 1896, through a dual-class share structure after its shares became publicly traded. A. G. Sulzberger, the paper's publisher and the company's chairman, is the fifth generation of the family to head the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roger Federer
Roger Federer (; born 8 August 1981) is a Swiss former professional tennis player. He was ranked List of ATP number 1 ranked singles tennis players#Weeks at No. 1, world No. 1 by the Association of Tennis Professionals (ATP) for 310 weeks, including a record 237 consecutive weeks, and finished as the year-end No. 1 five times. He won 103 ATP singles titles, the second most of all time, including 20 Grand Slam (tennis)#Tournaments, Grand Slam singles titles, a record eight men's singles Wimbledon Championships, Wimbledon titles, an Open Era record-tying five men's singles US Open (tennis), US Open titles, and a record-tying six ATP Finals, year-end championships. Federer played during an era where he dominated men's tennis along with Rafael Nadal and Novak Djokovic as the Big Three (tennis), Big Three, collectively considered by some to be the three most successful male tennis players of all time. Federer's 20 Grand Slam singles titles also put him at third most of all time, on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis Court
A tennis court is the venue where the sport of tennis is played. It is a firm rectangular surface with a low net stretched across the centre. The same surface can be used to play both doubles and singles matches. A variety of surfaces can be used to create a tennis court, each with its own characteristics which affect the playing style of the game. Dimensions The dimensions of a tennis court are defined and regulated by the International Tennis Federation (ITF) governing body and are written down in the annual 'Rules of Tennis' document. The court is long. Its width is for singles matches and for doubles matches. The service line is from the net. Additional clear space around the court is needed in order for players to reach overrun balls for a total of wide and long. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. The net is high at the posts, and high in the center. The net posts are outside the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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