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What is the difference between waves and radiation?

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Electromagnetic radiation is carried by electromagnetic waves. In the case of electromagnetic waves and electromagnetic radiation, the distinction is not that important, but when a textbook discusses electromagnetic radiation, it is emphasizing the mechanism by which waves are produced, rather than the propagation of existing waves. read more

Waves are whatever needs and oscillation between two kinds of energies to transmit source energy (sound, sea waves, EMs, seismic) while radiation is a kind of energy that does not need a media to transmit energy (heat by infrared, light, EM, alpha, beta, neutrons, cosmic particles), please note that the three first belong to both domains. read more

Radiation was a general terminology assigned to transfer of energy radially, to start with with waves: acoustic waves, waves in water. Then came Maxwell's equations and the discovery of electromagnetic waves, which emitted energy in waves from a point source radially. read more

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