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Why electromagnetic wave not heat the medium?

April 26, 2017electromagnetic heat medium wave

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Why electromagnetic wave not heat the medium?

1 Answer

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10 Posted

Electromagnetic waves do add heat to the medium they travel through, but only when they are absorbed by matter. This is why sunlight heats the Earth. Lower frequency waves (like radio waves) pass through matter more easily without being absorbed, which is why they’re used for communication.