On Mon, Aug 28, 2006 at 05:26:24PM +1200, Russell McMahon wrote: > > Dumb idea time... Could I obtain hydrogen and helium by making a > > sealed > > steel container, creating a good vacuum in it, and waiting for it to > > fill up with hydrogen and helium from the atmosphere? How pure would > > it > > be? > > Definitely impractical, but fun. > > You'd get Hydrogen, not Helium.And, given the vanishingly small > (literally) amount in the atmosphere you'd get about none over any > sensible time period. But a fun game :-). Hmm... could make for a neat toy. Think a balance beam, one side a solid weight, the other side my evacuated and hermetically sealed cylinder. Eventually they won't balance... Good enough for a canada council for the arts grant application I think! -- http://www.petertodd.ca -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist