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。
An animated diagram of a 12-6 curveball
參考
 |
维基共享资源上的相关多媒体资源：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
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.