Jo Miran@lemmy.mlM to 196@lemmy.blahaj.zoneEnglish · 1 day agoGood ol' days rulelemmy.mlimagemessage-square21fedilinkarrow-up1244arrow-down15
arrow-up1239arrow-down1imageGood ol' days rulelemmy.mlJo Miran@lemmy.mlM to 196@lemmy.blahaj.zoneEnglish · 1 day agomessage-square21fedilink
minus-squareWalleyeWarrior@midwest.sociallinkfedilinkEnglisharrow-up3·1 day agoSo what did this radioactive ring supposedly do? there had to be a reason that kids were excited to win one
minus-squareOdemption@sopuli.xyzlinkfedilinkEnglisharrow-up8·23 hours agoThe ring was a miniature spinthariscope. When removing the red cap in a dark room, you could peer into a tiny viewing chamber and see flashes of light caused by alpha particles hitting a zing sulfide screen.
minus-squaremossy_@lemmy.worldlinkfedilinkEnglisharrow-up2·17 hours agodamn that’s actually really cool
So what did this radioactive ring supposedly do? there had to be a reason that kids were excited to win one
The ring was a miniature spinthariscope.
When removing the red cap in a dark room, you could peer into a tiny viewing chamber and see flashes of light caused by alpha particles hitting a zing sulfide screen.
damn that’s actually really cool