gamma ray

gamma ray
Very high frequency (and therefore very high energy) electromagnetic radiation emitted as a consequence of radioactivity.
See Also: gamma radiation

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  • Gamma ray — Gam ma ray n. (Physics) A very penetrating electromagnetic ray not appreciably deflected by a magnetic or electric field, emitted by radioactive substances. Gamma rays are photons of electromagnetic radiation having a wavelength shorter than that …   The Collaborative International Dictionary of English

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