cannedtuna@lemmy.world to Science Memes@mander.xyzEnglish · 3 days agoJimmy Neutron confirmed Chad?lemmy.worldimagemessage-square39fedilinkarrow-up1730arrow-down112
arrow-up1718arrow-down1imageJimmy Neutron confirmed Chad?lemmy.worldcannedtuna@lemmy.world to Science Memes@mander.xyzEnglish · 3 days agomessage-square39fedilink
minus-squareKlear@piefed.worldlinkfedilinkEnglisharrow-up8·3 days agoNah, that’s not what they’re talking about. Superman’s vision is capable of penetrating concrete, but gets reliably stopped by lead. None of the particles here (or, I’m guessing, anywhere) have that property.
minus-squareAlcoholicorn@mander.xyzlinkfedilinkEnglisharrow-up17·3 days agoGamma rays kinda do, you need 10x more concrete to block them than lead: https://en.wikipedia.org/wiki/Half-value_layer
minus-squareKlear@piefed.worldlinkfedilinkEnglisharrow-up12·3 days agoPhew, good to know. I was beginning to think Superman isn’t real.
minus-squarebingrazer@lemmy.worldlinkfedilinkEnglisharrow-up5·3 days agoGammas might be able to penetrate a little bit of concrete, since concrete has lower electron density than lead
Nah, that’s not what they’re talking about. Superman’s vision is capable of penetrating concrete, but gets reliably stopped by lead. None of the particles here (or, I’m guessing, anywhere) have that property.
Gamma rays kinda do, you need 10x more concrete to block them than lead: https://en.wikipedia.org/wiki/Half-value_layer
Phew, good to know. I was beginning to think Superman isn’t real.
Gammas might be able to penetrate a little bit of concrete, since concrete has lower electron density than lead