The flight of a spinning rugby ball is difficult to describe mathematically but easy to observe experimentally. The flight can be simulated by dropping an egg into a water tank and observing or filming the outcome. Differences between a spinning and a non-spinning wooden egg are presented as supplementary videos.

中文翻译：

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模拟椭圆形足球的飞行

旋转橄榄球的飞行很难用数学描述，但很容易通过实验观察。可以通过将鸡蛋放入水箱并观察或拍摄结果来模拟飞行。旋转和非旋转木蛋之间的差异作为补充视频呈现。