KLUDGE@AGCB1.LARC.NASA.GOV (11/13/90)
Nobody has yet pointed out that, although light bulbs have an inert gas in them at atmospheric pressure (to make them easier to manufacture, so that their envelopes may be thinner, and to prevent outgassing of the filament), vacuum tubes have no such things. Vacuum tubes have somewhat thicker envelopes and are fairly safe as long as you keep your fingers off that B+ wire. --scott (who thinks making 6L6's in space would be a good idea)