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Yes, more specifically https://en.wikipedia.org/wiki/Thoriated_glass https://en.wikipedia.org/wiki/Thoriated_glass also: https://www.youtube.com/watch?v=sHjCK

by dngray 7y ago

Yes, more specifically https://en.wikipedia.org/wiki/Thoriated_glass https://en.wikipedia.org/wiki/Thoriated_glass also: https://www.youtube.com/watch?v=sHjCKiXDIDc https://www.youtube.com/watch?v=sHjCKiXDIDc