Alan B. Pearce wrote: >>Well, when I was at secondary school I had a piece of solid mercury >>sitting on the tip of my finger for a few minutes.<< When I was in elementary school, my cousing broke a thermometer and showed me how to make a (Soviet) copper penny into a shiny silver dime (he rubbed it in mercury with his fingers). A few years later, I witnessed a group of kids breaking fluorescent bulbs and rubbing pennies with the white powder. When I pointed out that mercury is toxic, and they really shouldn't be handling it, they gave me a lecture on how crazy they would have been to use mercury, and that the white powder wasn't mercury at all. :) Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist