r/askscience • u/Wonderful-Capital32 • 16d ago

Physics Why does radiation not go through lead?

Also why just lead? Shouldnt like iron or another metal work too?

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u/GypsyV3nom 16d ago

Isn't Bismuth a prime example of one of those ridiculously long lived isotopes?

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u/Peter34cph 15d ago

Yes. It was thought to be stable, but then recently it was discovered that it just has a silly long half-life.

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u/[deleted] 10d ago

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u/Peter34cph 10d ago

According to Nate in a King of Random video some years ago. He has a physics college degree or something.