Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1345-2422-3 |
Объём: | 80 страниц |
Масса: | 141 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Cyclops is a computer system conceived by British inventor Bill Carlton of Malta, which is used on the ATP and WTA professional tennis tours to help determine whether a serve is in or out. The system, which must be activated by the chair umpire before each serve, projects five or six infra-red horizontal beams of light along the court 10 mm above the ground. One beam covers the good (short) side of the service line and others cover the fault (long) side. If a served ball hits the first beam, the other beams are turned off, while a long serve will break one of the other beams. A long serve is indicated by an audible signal. The system is tuned before each tournament and a representative of the company which rents the system stays through the tournament and confers with tournament officials afterwards to determine any problems which may have arisen. The system has been constantly refined to improve accuracy, although no statistics on its efficacy are available.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.