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Just like accelerating charge produces emits radiation, does an accelerating magnet emit electromagnetic radiation?

tired and bored dev
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2 Answers2

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This is only a partial answer, but since there has been no other answer in the last 24 hours I will post in the hope it is helpful.

We know an accelerated charge produces electromagnetic radiation because that's how radio transmitters work. So if you wave an eletric charge around it will radiate. Similarly, if you wave a magnetic charge around it would radiate.

The problem is that a magnetic charge would be a magnetic monopole and as far as we know these do not exist. The magnets we all played with as children are magnetic dipoles not magnetic charges. So the question is whether a magnetic dipole radiates when you wave it around.

And this is where we run into problems because the answer to this apparently simple question seems obscure. I have posted a question Does an accelerating electric dipole radiate? to ask this question, but at the time of writing there is no answer to it.

John Rennie
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  • Thanks for pointing out. May be doing an experiment will give answer... – tired and bored dev Mar 12 '18 at 10:01
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    @tiredandboreddev if you look at the numbers in the links I gave the energy is so low that it will need a really good lab to see it. https://www.sciencedirect.com/science/article/pii/S0927650514001017#s0030 the value for the cornell electron synchrtron is ~10^-34 MeV – anna v Mar 12 '18 at 11:49
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In classical electrodynamics any changing charge or current distribution is accompanied by radiation. Antennas are required to make the emission of radiation efficient.

my2cts
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