At 4:23 PM -0800 11/30/08, Lux, James P wrote: >Exactly.. I'm sure I'm not the only one on this list that has >contemplated home use of liquid helium or even making the stuff. >Hey, if Onnes could do it 100 years ago, so can we. > >I assume the cryogen isn't being used for superconductivity in this >case, but for just being cold. In which case, perhaps LH2 or LN2 >would serve almost as well. The latter, particularly, is pretty >manageable (i.e. You don't have to make it yourself). > >Cost wise, I like the snippet I read in Scientific American a decade >or so ago.. LN2 is the cost of milk, LHe is the cost of fine scotch >whisky >Is a obsessive precision worth a bottle of scotch? > >Jim
I work in a lab where LHe is around much of the time. So it's not that far of a stretch for me to contemplate using it, although I don't personally handle the stuff. We also have a few obsolete receiver Dewars lying around... one of them could be retrofitted to hold a cryogenic standard if we felt like it. But there's the "rent" of regularly buying that LHe to keep the standard cold. Kinda like being a drunkard on fine Scotch whisky without the buzz. -- --David Forbes, Tucson, AZ http://www.cathodecorner.com/ _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.