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cover of episode How do boomerangs return?

How do boomerangs return?

2025/4/17
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Moment of Um
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摩
摩西·布莱克
罗
罗根·布罗德本特
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摩西·布莱克：我很好奇回旋镖为什么能够飞回。 罗根·布罗德本特：回旋镖能够飞回的原理在于空气动力学。这其中涉及到许多科学原理，例如陀螺进动、差动升力、离心力、惯性矩、角动量和扭矩等等。简单来说，回旋镖的每个翼面都像飞机的机翼一样，能够产生升力。但是，回旋镖的升力方向是侧向的，而不是垂直向上的。因此，当我们垂直向上抛出回旋镖时，侧向的升力会使它沿着曲线飞行，最终回到我们身边。 伯努利原理也解释了回旋镖飞行的原理：回旋镖机翼上方的空气流动速度快，压力低；机翼下方的空气流动速度慢，压力高。这种压力差产生了向上的升力，使回旋镖能够飞行，这与飞机的飞行原理是相同的。 最初的回旋镖来自澳大利亚，由澳大利亚原住民发明，最初是作为狩猎工具使用的投掷棒。在澳大利亚，它被称为kylead。kylead是一种多用途工具，不仅用于狩猎，还被用作乐器和挖掘水生植物的工具。它就像澳大利亚原住民的瑞士军刀一样，用途广泛。

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A boomerang is a specially curved wooden throwing stick that was originally used as a hunting tool by Indigenous Australians. Nowadays, you can find toy versions along with the real thing, and if you throw them just right, they’ll curve around in the air and head right back to you. At least…it works for *some *people. So how exactly does a boomerang fly? We asked boomerang champion Logan Broadbent to help us find the answer.

Got a question that keeps coming back to you? Send it to us at BrainsOn.org/contact), and we’ll *booma-wrangle *some answers for you.