Smoke and Laser to help create a new kind of microphone

by mohsin

Currently microphones use a series of vibrating membranes and magnets, capacitors, or other electrical components to detect the nuances of sound. David Schwartz is the inventor of a new kind of microphone that uses smoke and lasers to detect sound. His prototype uses a laser, smoke-filled air, and a super-sensitive photocell to pick up the sonic vibrations in the air and translate them into audio signals. This microphone although far from its desired level of sensitivity is just a small step says the inventor. Take a look at the video to judge for your self.
Via [Cnet]

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