研究人员说:“这些球体由弹性材料制成,其高依从性或者说易变形的特点为水漂现象带来了一些有趣的变化。”
But, with a side throw and flick of the wrist, people young and old have been skipping stones across water for thousands of years with the object of getting as many bounces as possible.
不过,转动手腕、体侧投出,老老少少的人们用石子打了千百年水漂,目标只有一个,就是让石子在水面的弹跳次数尽可能多。
The world record, according to the Guinness Book of Records, is 88 skips set this year by an American called Kurt Steiner.
据《吉尼斯世界纪录》记载,打水漂的世界纪录是88次弹跳,由美国人库尔特·斯坦纳于今年创造。
Professor Truscott said the skill depends on what angle the thrower chooses to hurl an object at, with the optimal for disc-shaped stones close to 20°. But the heavier the object, the flatter this should be.
特拉斯科特教授说打水漂的技术基于投掷者选取的投掷角度,就碟状石子而言,最理想的投掷角度接近于20°。不过,投掷的物体越重,角度应该越小。
He said: 'Spheres are generally harder to skip than discs. In fact, previous research suggests an upper bound on the initial course angle 18°.
他说:“一般来说,与碟状物体相比,球体的弹跳更难实现。事实上,前人的研究表明,投掷角度的上限是18°。”
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