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What dictates whether electromagnetic radiation is absorbed?

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Has to do with the way electromagnetic radiation interacts with matter. A photon, which is the smallest energy unit of an electromagnetic wave, can be absorbed in matter only if atoms, or molecules, or electrons in that piece of matter have some energy level available, with energy difference equal to the photon energy. read more

A photon, which is the smallest energy unit of an electromagnetic wave, can be absorbed in matter only if atoms, or molecules, or electrons in that piece of matter have some energy level available, with energy difference equal to the photon energy. read more

Start studying Waves, Electromagnetic Radiation, How light is Produced. Learn vocabulary, terms, and more with flashcards, games, and other study tools. read more

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Atmospheric Opacity
Source: physics.byu.edu