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Old 02-08-2007, 08:39 PM #1
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Default Navy SEAL Dive watches w/ Tritium Isotope

these are pretty cool, my uncle has the yellow one

http://navyseals.com/store/luminox.aspx

they have a tritium isotope which allows them to always glow.. i think it has a halflife of like 15 years.

i posted this b/c the tritium post by tallaxo reminded me of these watches


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Old 02-08-2007, 08:52 PM #2
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Default Re: Navy SEAL Dive watches w/ Tritium Isotope

Why don't they put uranium in them? Small amounts of non purified uranium are completely legal.

UnitedNuclear.com sells uranium

Pretty cool though. I don't wear a watch :P
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Old 02-08-2007, 09:34 PM #3
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Default Re: Navy SEAL Dive watches w/ Tritium Isotope

They are cool watches 8-)

Proc . Reason why Uranium is not used is because as its potentially fissionable, its primarily a neutron and Gamma emitter.

In the past Radium was used in old watches and clock dials to glow in the dark, but radium undergoes up to 7 decay sequences before it becomes inert and mimicked Calcium so much that human bones absorbed it like a sponge causing all sorts of nasty bone cancers and lukemia.

Tritium is considered a "Safe " alternative because it has a single decay process to harmless Helium gas, releasing a beta radiation particle in the form of an electron.


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Old 02-08-2007, 09:40 PM #4
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Default Re: Navy SEAL Dive watches w/ Tritium Isotope

Yeah I guess wearing a radioactive element on your arm all day isn't too safe ;D

I might buy a small sample of uranium from unitednuclear though.
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Old 02-17-2007, 02:23 AM #5
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Default Re: Navy SEAL Dive watches w/ Tritium Isotope

There are a few Group Buys on CPF for Tritium...a couple of "commercial" 'glow-rings' and the bare vials themselves....I think one of the peeps is in the UK...The prices are KINDA odd to figure out...search Tritium - and go to the first page in the GB section...
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