Wireless energy transmission via sound waves

  • Thread starter Nickj800
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Main Question or Discussion Point

Today in my high school physics class, we were shown that object 1 vibrating at object 2's natural frequency, can cause object 2 to vibrate. So since you are transferring energy, i was wondering if its possible to use ultrasonic or infrasonic sound waves to vibrate a magnet, causing a current to flow through a wire. Does anyone know if this has been done? Is there a way i can calculate how efficient it would be? Assuming the concept works.

p.s. The magnet idea is the first thing I thought of, but if you can think of any other ways to convert the energy into electrical energy, feel free to let me know :D.
 

Answers and Replies

russ_watters
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Welcome to PF.

You are describing a microphone! They are extremely inefficient.
 
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oh ok, never knew how a microphone worked.

thanks for the reply.
 

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