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photomagnetic

adjective
pho·​to·​magnetic | \ "+\

Definition of photomagnetic

1 : of or relating to the direct effect of light upon the magnetic properties of substances
2 : of or relating to interactions between the magnetic component of electromagnetic radiation (as gamma rays) and the magnetic dipole moments of nuclear particles

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History and Etymology for photomagnetic

International Scientific Vocabulary phot- + magnetic

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