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Uranium glass (en.wikipedia.org)

submitted 1 day ago by Plum@lemmy.world to c/wikipedia@lemmy.world

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[–] tal@lemmy.today 4 points 18 hours ago* (last edited 18 hours ago)

The glow is it fluorescing under UV light, like glow-in-the-dark UV paint if you have a blacklight. It's not a result of internal radioactivity.