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Build your own laser microphone

http://www.youtube.com/watch?v=iI8w2s05sd8&feature=channel

by grandalf • 17 years ago

21 3 17 years ago

YO

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3

slapshot• 17 years ago

I am amazed at the future of our children. Somewhere, some kid is going to have a science fair project that teaches him interferometry. This is way cooler than those old books of science fair projects ("grow salt crystals!"). The next generation of kids will be ADD, but have such an amazing breadth of knowledge.

KonaB• 17 years ago

A couple of links:

http://www.williamson-labs.com/laser-mic.htm

http://lifehacker.com/software/diy/build-a-laser-spy-microph...

stcredzero• 17 years ago

People were talking about this in the 80's. The government line was that it was tried by Spy agencies, but it didn't work.

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