radiant energy

radiant energy
1. energy transmitted in wave motion, esp. electromagnetic wave motion.
2. light1 (def. 2a).
[1910-15]

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       energy that is transferred by electromagnetic radiation, such as light, X-rays (X-ray), gamma rays (gamma ray), and thermal radiation, which may be described in terms of either discrete packets of energy, called photons (photon), or continuous electromagnetic waves. The conservation of energy (energy, conservation of) law requires that the radiant energy absorbed or emitted by a system be included in the total energy.

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Universalium. 2010.

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