Quote:
Originally Posted by mike
Although we simply call it tritium it is actually a compound containing a phosphorous substance and within that overall compound there is some tritium which acts as the power source for the phosphorous material ((like the battery).
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This explains an ongoing mystery with my watch. I have a Submariner date with the tritium markings on the dial, and I always assumed it was just...you know...tritium. I always wondered why it would glow off and on even after the tritium died away since I know that tritium itself isn't phosphorescent.
Thanks for solving my mystery!
GHEN