Did you know that when you talk inside a house, the windows vibrate very slightly from your voice? If you stand outside the house and aim a laser beam at the window, you can pick up the vibrations in the window and actually hear the conversation inside the house.
First, I’ll show you how to build your own space-age laser communicator, then you can work on your spy device. The first thing we’re going to do is take the music from your iPOD (or stereo, or MP3 player) and transmit it on a laser beam to a detector on the other side. The detector has a earphone attached, so someone else can listen to the music from your laser. Weird, huh?
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Hi,
From the Laser Communicator video we found how to send sound over a laser, but I cannot find where it shows how to receive sound using a laser on a window. Is there another video somewhere for the spy device?
Thank you,
Andrea