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Would this create an electromagnetic wave?

  1. Mar 31, 2009 #1
    I know that a changing magnetic field creates a changing electric field, which creates a changing magnetic field, which in turn creates a changing electric field. My question is, if one were to shake a magnet really hard would this create an electromagnetic wave? Possibly a radio wave. I say a radio wave because obviously no one sees or feels anything when one shakes a magnet.
  2. jcsd
  3. Mar 31, 2009 #2


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    Science Advisor

    If you could shake the magnet very fast (>100kHz), it would produce a radio wave.
  4. Mar 31, 2009 #3


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    Gold Member

    I think, technically, the radio wave spectrum approaches 0Hz. So even your 5Hz wave would be radio. Just very, very long waves... ~20,000km wavelength.
    Last edited: Mar 31, 2009
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