Radiation
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Radiation
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1. The process by which electromagnetic energy is propagated through free
space by virtue of joint undulatory variations in the electric and magnetic
fields in space. This concept is to be distinguished from conduction and convection.
A group of physical principles known as the radiation laws comprise, to a
large extent, the current state of practical knowledge of the complex radiative
processes.
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2. The process by which energy is propagated through any medium by virtue
of the wave motion of that medium, as in
the propagation of sound wave through the atmosphere, or ocean waves along
the water surface.
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3. = radiant energy.
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4. = electromagnetic radiation, specifically,
high-energy radiation such as gamma rays and X-rays.
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5. Corpuscular emissions, such as α or β-radiation.
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6. = nuclear radiation.
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7. = radioactivity. [[/a>|/a>
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use