2010-12-15 15:45:34.419096+01 by Dan Lyke 0 comments
Clearing the browser tabs, it's been a busy week that changed focus completely on Monday:
Chris in Florida sent along Midnight Science.com: The Xtal Set Society, specifically for the ultrasonics page and this page on the ultrasonic spectrum.
Probably some experiments for the kids in there...
[ related topics: Children and growing up ]
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