Coin-sized nuclear 3V battery with 50-year lifespan enters mass production
(www.techspot.com)
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I alway’s wondered how dangerous those radium dials were. I know they make replacements for watch repair. Damn it cyberrigger! Now I have to look up the half life of radium and it’s rad count.
there were some tritium (super heavy hydrogen) based dials deemed to be not as dangerous
https://en.wikipedia.org/wiki/Tritium_radioluminescence
radium dials emit a lot of gamma radiation ----- goes right through you.