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@aaa@lemmy.sdf.org

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⁨Comment⁩ on ⁨Patch this Bish!⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:
photosynthesis?
⁨Comment⁩ on ⁨penetration tests⁩ ⁨⁨6⁩ ⁨months⁩ ago⁩:
that’s very interesting, thanks.
⁨Comment⁩ on ⁨penetration tests⁩ ⁨⁨6⁩ ⁨months⁩ ago⁩:
idiot here. can someone explain to me how come neutrons can’t penetrate concrete compared to lead.