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| Gamma Rays Gamma Radiation | Radiation, Gamma | Gamma Radiations | Gamma Ray | Radiations, Gamma | Ray, Gamma | Rays, Gamma Very powerful and penetrating, high-energy electromagnetic radiation of shorter wavelength than that of x-rays. They are emitted by a decaying nucleus, usually between 0.01 and 10 MeV. They are also called nuclear x-rays. | |
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