There are 3 video's of Simon's utak on radioactivity of lenses on YT. The second one is the most interesting: https://youtu.be/ZaAOMPvlTaU?si=0gvLcad9W2s2G8K7
Henk Op 23-6-2026 om 20:18 schreef Scott Loveless:
Hey, folks! I've been trying to track down a list of which lenses were made with thorium elements, but my Google Fu is failing me. Anyone know where I can find one, or do you just have a list in your head? Thanks!
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