TIL that time dilation is the reason we can use muon tomography to scan the Great Pyramids. From their point of view, muons only live a very short time. But they go so fast that from our point of view, they live long enough to penetrate the atmosphere and large objects.

Read more: https://en.wikipedia.org/wiki/Muon

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  1. I have insomnia lately so like any normal person I started reading about the standard model at night and I thought that was a really cool earth-based application of relativity.

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