曲球
曲球(Curveball)棒球中的一種球路。握球時食指與中指握在球的外側縫線處,出手時藉著手腕的順時針方向旋轉與手指的向下施力,使球造成旋轉,進而產生垂直向分力,加上重力的作用,會使球在進入本壘板前的垂直掉落幅度遠大於快速球。曲球於1870年代首次出現,是相當古老的一種變化球。
參考
维基共享资源中相关的多媒体资源:曲球 |
- Version 1: Candy Cummings was the inventor of the curveball
- Version 2: Fred Goldsmith: co-inventor of the curveball or pitcher who gave first recorded demonstration of the curveball?
- Aerodynamics of a Curveball in Navier-Stokes Flow 页面存档备份,存于
- How to Throw a Curveball 页面存档备份,存于 – wikiHow page outlining technique
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