>> It's also, fwiw, the H in H Bomb. > > It's 1/2 of the H in H Bomb. The other is deuterium. Indeed. Has to be used fresh or reconditioned before use or it goes bad and loses it's efficacy * :-). Russell * Half life is around 11 years AFAIR so it can get less than pristine quite quickly. H bombs have to have their Tritium reconditioned regularly to keep them in shape. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist