Funditor

Hi guys, I found this awesome project on making a laser listening device out of a laser pointer. This can be useful for teaching physics of light/sound so I thought some of you would be interested. It's cool, check it out: http://www.metacafe.com/watch/767822/laser_espionage_microphone_how_to/ There's a full writeup on the project here: http://funditor.110mb.com/LaserListener.html