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gamma ray

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
gamma ray
n.
Electromagnetic radiation emitted by radioactive decay and having energies in a range from ten thousand (104) to ten million (107) electron volts.
gamma ray
A stream of high-energy electromagnetic radiation given off by an atomic nucleus undergoing radioactive decay. Because the wavelengths of gamma rays are shorter than those of x-rays, gamma rays have greater energy and penetrating power than x-rays. Gamma rays are emitted by pulsars, quasars, and radio galaxies but cannot penetrate the Earth's atmosphere. See more at radioactive decay.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.gamma ray - electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
gamma radiation
electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
electromagnetic spectrum - the entire frequency range of electromagnetic waves
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Byline: ANI Washington, November 3 (ANI): NASA's Fermi telescope has detected gamma rays from "star factories" in other galaxies.
Gamma rays from "star factories" in galaxies other than Milky Way ... by Asian News International
The event, designated GRB 090423, was first detected by the American space agency Nasa's Swift satellite, which is designed to spot gamma ray bursts.
Snapshot of our very distant past by Coventry Evening Telegraph (England)
Many astronomers believe that as the star fades away and becomes a black hole, it shoots gamma rays into space.
Watching deep-space fireworks by Ornes, Stephen / Science News for Kids
 
 
 
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