5 ms·

A couple of links: http://www.williamson-labs.com/laser-mic.htm http://www.williamson-labs.com/laser-mic.htm http://lifehacker.com/software/diy/build-a-laser-

by KonaB 17y ago

A couple of links: http://www.williamson-labs.com/laser-mic.htm http://www.williamson-labs.com/laser-mic.htm http://lifehacker.com/software/diy/build-a-laser-spy-microphone-on-the-cheap-292718.php http://lifehacker.com/software/diy/build-a-laser-spy-microph...