Science Memes

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penetration tests (mander.xyz)

submitted 3 months ago by [email protected] to c/[email protected]

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[–] [email protected] 11 points 2 months ago

Neutrons need something that provides them with lots of chances to have interactions. Water is good too. What blocks neutrons may not block gamma and vise versa. To block neutrons and high energy particles like cosmic rays that actually have mass to them you need something like a crash barrier.