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一枚有1/3概率立起来的硬币 3D Printer File Image 1
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一枚有1/3概率立起来的硬币

漏油劉 avatar漏油劉

February 24, 2026

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Description

根据毕导的科普,当硬币直径是厚度的根号3倍时,其有三分之一的概率立起来。

于是我设计了这个硬币,直径跟一元硬币一样是25mm,厚度为14.45mm,并且抛了50次:

结局非常amazing啊,正、反、立的次数分别为16次、17次、17次,概率分别为0.32、0.34、0.34!

为了保证“硬币”质地均匀,我使用了100%填充

License:

Standard Digital File License

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