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This is an accepted version of this page This is the latest accepted revision, reviewed on 25 January 2025. Ball used in the sport of tennis Tennis balls at the 2012 French Open A tennis ball is a small, hollow ball used in games of tennis and real tennis. Tennis balls are fluorescent yellow in professional competitions, but in recreational play other colors are also used. Tennis balls are ...
The tennis ball theorem was first published under this name by Vladimir Arnold in 1994, [2] [3] and is often attributed to Arnold, but a closely related result appears earlier in a 1968 paper by Beniamino Segre, and the tennis ball theorem itself is a special case of a theorem in a 1977 paper by Joel L. Weiner.
The dimensions of a tennis court. 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. [1] The court is 78 ft (23.77 m) long. Its width is 27 ft (8.23 m) for singles matches and 36 ft (10.97 m) for doubles matches. [2]
Tennis balls must conform to certain criteria for size, weight, deformation, and bounce to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as 65.41–68.58 mm (2.575–2.700 in). Balls must weigh between 56.0 and 59.4 g (1.98 and 2.10 oz). [64] Tennis balls were traditionally manufactured ...
The International Table Tennis Federation specifies that the ball shall bounce up 24–26 cm when dropped from a height of 30.5 cm on to a standard steel block, [7] implying a COR of 0.887 to 0.923. The International Basketball Federation (FIBA) rules require that the ball rebound to a height of between 1035 and 1085 mm when dropped from a ...
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The balls were traditionally white, but around the end of the 20th century "optic yellow" was introduced for improved visibility, as had been done years earlier in lawn tennis. The balls are much less bouncy than lawn tennis balls, and weigh about 2 + 1 ⁄ 2 ounces (71 grams); lawn tennis balls typically weigh 2 ounces (57 g).
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