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Old March 10th 07, 06:47 PM posted to rec.radio.amateur.homebrew,sci.electronics.design
Scott Scott is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 162
Default Detecting Ultrasound

It cuts off your ear if you get too close



clifto wrote:
Stace MacGuyver wrote:

Suspend a thin shaving razor blade between two pieces of dental floss and put
your ear close to the blade. Watch the razor vibrate.



That's pretty cool, MacGuyver. Does the razor blade do anything?