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Magnetostriction method

  1. Aug 9, 2014 #1
    I don't really understand what is the need of giving feedback in the magnetostriction method to produce ultrasonic waves.

    I am thinking of just winding a single rod over a nickel rod and then connecting then connecting the 2 ends to a battery. When the current is passed,magnetic field develops and the rod vibrates and produces ultrasonic waves. Is this possible?
  2. jcsd
  3. Aug 10, 2014 #2


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  4. Aug 11, 2014 #3
    I added the words "then connecting" twice. That's why this question appears lame.
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