On 9/25/06, Russell McMahon wrote: > > When I worked at the DSIR in NZ they were doing a mortar ranging > > calculator > > as a project, and to illuminate the display has some little glass > > vials > > filled with a tritium based radio active source IIRC, that caused a > > fluorescent coating on the inside of the tube to glow pale green. > > Apparently > > these are only available to the military because of the radio active > > content > > It's also, fwiw, the H in H Bomb. It's 1/2 of the H in H Bomb. The other is deuterium. >I have a tritium based keyring at home! You can buy these freely from e.g. > http://www.theglowcompany.co.uk/acatalog/GLOW_RINGS.html You can buy them freely in the UK. They can't be sent into the US because they are radioactive. Bill -- Psst... Hey, you... Buddy... Want a kitten? straycatblues.petfinder.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist