Quote:
Originally Posted by m630
Sorry yes i meant tritium, didnt think it was still be used for new watches. Of course the issue there is that it will degrade overtime.
As for me, my PAMs do provide continuous lume, perhaps it has to do with how its applied and how much is applied- as even they use multiple methods and i have an example of a painted dial vs a sandwich dial where the latter is the brighter between the two applications. I can always look at my watch in the middle of the nite and see the lume. So while it will not be intense as it will be when initially charged, as your eyes acclimate to the darkness you stay able to see the lume without issue.
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Red:
Tritium's half life is ~12 years. So, 12 years from now, a tritium tube will glow half as brightly as it does now.
SL also degrades over time. In my experience, in about 20 minutes it's about half as bright as it was when it was fully charged. One can replicate the charging process for SL repeatedly for ~25 years after which time it just won't glow at all.
So in 25 years time, whereas the tritium may only be glowing at 1/4th it's original brightness, it will still be glowing. The SL will not.
Blue:
Which Pams have you?
Green:
I trust that is so for your eyes. I can guarantee you it's not for mine.
All the best.