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Sport bowling : ウィキペディア英語版 | Sport bowling Sport Bowling is any form of ten pin bowling that uses patterns of lane oil to reduce the effectiveness of modern bowling balls. Sport Bowling was created by the United States Bowling Congress, the governing body of the sport of ten pin bowling, to offer players the opportunity to bowl on exactly the same lane conditions and oil patterns that professional bowlers face on the PBA Tour. Sport Bowling originally referred to leagues, known as (PBA Experience Leagues ), which are offered in conjunction with the Professional Bowlers Association. However, the term is now used to refer to any bowling event which incorporates a "sport shot" or oil pattern. As bowling technology has progressed the ability to consistently and strongly hook a bowling ball became significantly easier and as a result professional and league bowling scores increased. Over time achieving honor scores (e.g. 300 games, 800+ series) became far more common to the point of diminishing the accomplishment associated with achieving these scores. To counter this trend the idea of custom oil patterns or "sport shot" that could be programmed into a lane conditioning machine and laid on the lane emerged. ==Lane Friction Topography==
Lane conditions are created by cleaning the lane surface and then applying lane oil in a pattern via a lane oiling machine. Lane oil is designed to both protect the surface and influence bowling ball hook. Ball hook is the product of the its surface material (cover stock), balance (core), direction of travel, speed of delivery, and spin (angular momentum). As the ball travels towards the pins it interacts with the lane surface and reacts to friction. As the ball encounters friction its angular momentum is consumed changing its trajectory. In areas of the lane where there is less oil the ball will change direction (hook) and in areas of the lane where there is more oil the ball will not change direction (skid). A "topographic map" that illustrates the location and quantity of oil placed on the lane for each oil pattern can be found. On these charts areas with a large quantities of oil as depicted as high terrain and areas with a small quantities of oil are depicted as low terrain. Bowlers can use these maps to formulate strategies to manipulate their ball to cross this frictional landscape.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sport bowling」の詳細全文を読む
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