Quote:
Originally Posted by Tools
Tritium has a half life of ~12 years.. That means that after 12 years, it is emitting half of the energy that it did originally.. another 12 years, and it is again half that..
Generally, the tritium is still radioactive, but to a lesser extent and it cannot excite the phosphors in the paint matrix..
So, likely in your case, one watch has decayed more than the other and cannot make the paint glow. Could be because the paint used was on the shelf for a couple of years when used, or it could be that the paint matrix does not have sufficient phosphors to be excited by what little energy is left..  |
Larry, i am wondering if you can help please, i own a SD 16600. U serial.
A couple of years ago i changed the insert, i still have the original one which i put away in the box, my question is my friend , is the new insert a Tritium pearl, the ref. no. is 315-16660-81. Lumi y-09. Thank you in anticipation.
PS. the old insert is showing patination on the pearl.