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An electronic line judge is a device used in tennis to automatically detect where a ball has landed on the court. Attempts to revolutionize tennis officiating and the judging of calls in the sport began in the early 1970s and has resulted in the design, development and prototyping of several computerized, electronic line-judge devices.
Stringing machine; Strings (tennis) ... Tennis ball; W. Wilson K-Factor; Wilson ProStaff Original 6.0 This page was last edited on 8 October 2024, at 15:11 ...
The company was founded in 1970 by Robert Hirt McClure (1893–1991) of Princeton, New Jersey (the origin of the company's name) as a manufacturer of tennis-ball machines, and soon after, rackets. Howard Head , founder of the Head sporting goods company, took tennis lessons following his retirement and used a Prince tennis ball machine, but was ...
Cyclops is a computer system co-invented by Bill Carlton of Great Britain and Margaret Parnis England of Malta, [1] which is used on the ATP and WTA professional tennis tours as an electronic line judge to help determine whether a serve is in or out.
Originally the tennis ball consisted of rough cloth strips tightly bound together. Eventually the cloth strips became the core, wrapped in twine and covered by a finer cloth or felt hand-stitched around it. [6] In 1972, at the request of Lamar Hunt to televise World Championship Tennis, the tennis ball was manufactured with the optic yellow ...
A Penn Championship tennis ball Penn 3 balls, new and used Penn racquetball Penn Racquet Sports, Inc. is a subsidiary of Head N.V. that manufactures tennis balls and racquetballs. Penn was founded in 1910 as Pennsylvania Rubber Company of America, Inc. in Jeannette, Pennsylvania . [ 1 ]
The lack of raw materials during World War II made the manufacture of new machines difficult and expensive. [6] The first all original amusement device made by Williams was a flipperless pinball machine called Suspense (1946). During the late 1940s and early 1950s, Williams continued to make pinball machines and the occasional bat-and-ball game.
Totem tennis (also known as tether tennis or swingball) is a game where two players use racquets to strike a tennis or sponge ball which has been attached with string to the top of a vertical pole. [1] The pole is either driven into soft ground or anchored with a heavy base. Illustration of tether tennis (1904)