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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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I found an interesting demo for bubble making fans. Create a film across a bubble
wire loop that's about 6" or more in diameter. Take a lightweight string tied in a
loop. Make the loop about 2-3" in diameter, 7 to 10" of string. Dip the string in
bubble solution then gently place it on the bubble film of the horizontally held
wire loop. Try not to make a figure eight or twist it. The string should float on the
film. Now poke a hole in the area formed by the string. The surface tension will
immediately pull the string into a circle with a hole in the middle. The end result
is that your wire loop has bubble film everywhere except inside the string area.
--
Wayne T. Watson (121.015 Deg. W, 39.262 Deg. N, 2,701 feet, Nevada City, CA)
-- GMT-8 hr std. time, RJ Rcvr 39° 8' 0" N, 121° 1' 0" W
Your mother was right. Wear your hat and sunglasses in the summer sun.
This is especially true if you're older. -- NYT Science Section, May 2004
Web Page: <home.earthlink.net/~mtnviews>
sierra_mtnview -at- earthlink -dot- net
Imaginarium Museum: <home.earthlink.net/~mtnviews/imaginarium.html>
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