Dry ice chips w/interesting flow patterns
Автор: wbeaty
Загружено: 2007-06-03
Просмотров: 62522
Buy dry ice in the Seattle area at QFC supermarkets. It's about $1.00 per pound, in the seafood section. Bring a styrofoam cooler. Otherwise check your yellow pages under Dry Ice, or phone various supermarkets.
Dry ice creates water-fog droplets which become trapped in the viscous thin "boundary layer" of air above a dark water surface. LOOKS COOL! Long ago at the U. of Rochester we had nerd parties with the SF society, gamers, etc. I'd supply a block of dry ice as one major piece of entertainment. (Makes big booms when, ahem, misused.) Finally I built some official equipment: painting a cookie sheet black. Years later in the 80s at MOS Boston I used this phenomenon to demonstrate the gas nimbus and jets around rotating comet nuclei. Also see a weird electrostatic effect here:
THREADLIKE ELECTRIC WIND
• Nikola Tesla exhibit, Vancouver CA 11/2006...
http://amasci.com/weird/unusual/airth...
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