Question

Define radiation.....define

Answer 1

the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

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Answer 2

In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation (γ).