Big Cheap Trits on eBay

Ken_McE

Flashlight Enthusiast
Joined
Jun 16, 2003
Messages
1,689
BetaLux exit sign, $ 60 US. Manufactured Fall 2005. Vendor has a bunch of them.

(mods please move if needed, not quite sure where this fits best)
 
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Hmm...with a manufacture date of 2005, and a half-life of ten years, 25% of the product is gone.

Is it worth it...? :thinking:
 
It's more than 25% gone. The formula for calculating radioactive decay is 100% * .5 ^ [number of half-lives], or in this case 100% * .5 ^ .5 = 100% * .71 = 71%. So it's down almost 30% now, possibly a wee bit more if it was made really early in 2005.
 
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