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Gamma ray is a type of radiation that has no mass & no charge. Gamma rays have a high penetrating power. Text us. Tags: gamma ray, radiation, mass. Wednesday, February 01 2012.
Non-ionizing radiation. Non-ionizing (or non-ionising) radiation refers to any type of electromagnetic radiation that does not carry enough energy per quantum (photon energy) to ionize atoms or moleculesâthat is, to completely remove an electron from an atom or molecule.