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- Radiation
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Words related to radiation
ra·di·a·tion
R r -
near-infrared radiation
the shorter wavelengths of electromagnetic radiation in the infrared region of the spectrum, extending from about 0.75 to 2.5 micrometers, usually radiation reflected from plant materials. -
planck's radiation law
the law that energy associated with electromagnetic radiation, as light, is composed of discrete quanta of energy, each quantum equal to Planck's constant times the corresponding frequency of the radiation: the fundamental law of quantum mechanics. -
air shower
a shower of secondary cosmic radiation, caused by the interaction of cosmic radiation or gamma radiation with the atmosphere. -
cherenkov radiation
the electromagnetic radiation produced when a charged particle moves through a medium at a greater velocity than the velocity of light in that medium -
cosmic background radiation
electromagnetic radiation coming from every direction in the universe, considered the remnant of the big bang and corresponding to the black-body radiation of 3 K, the temperature to which the universe has cooled. -
far-infrared radiation
the longer wavelengths of electromagnetic radiation in the infrared region of the spectrum, beyond the red end of the visible spectrum, from 50 to 1000 micrometers. Abbreviation: FIR.