In the late 1950's was a great traveling road show put on by General Electric that went to high schools showing off the wonders of science and engineering to encourage kids to follow a career in those fields. The whole school would spend an hour-long "assembly" in the auditorium watching the show. One of the demonstrations was to pour mercury into a hammer-shaped mold, pour liquid nitrogen over it, pick up the now-solid hammer with a heavily-gloved hand and drive some nails through some wood 2X4s with it, then lay it in a pan. A few minutes later the mercury could be poured back into the bottle.
Ron AC7AC -----Original Message----- I remember in freshman physics lab at Caltech in 1957 one of my fellow students said he had figured out a weapon for the perfect crime. He made a mold and cast a mercury knife with the help of some liquid nitrogen. He held in in an asbestos glove (another dangerous substance, of course) and went around the lab making threatening gestures (until it started to melt). Bob, N7XY _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
