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March 21 2013

Pew Pew! Scientists Build Lasers Out of Sound, Call Them Phasers


Using a nanoscale drum, scientists have built a laser that uses sound waves instead of light like a conventional laser.

Because laser is an acronym for “light amplification by stimulated emission of radiation,” these new contraptions – which exploit particles of sound called phonons – should properly be called phasers. Such devices could one day be used in ultrasound medical imaging, computer parts, high-precision measurements, and many other places.

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