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• (1) The emission and propagation of waves transmitting energy through space or through some medium; for example, the emission and propagation of electromagnetic, sound, or elastic waves. (2) The energy transmitted by waves through space or some medium; when unqualified, usually refers to electromagnetic radiation. Also known as radiant energy. (3) A stream of particles, such as electrons, neutrons, protons, alpha particles, or high-energy photons, or a mixture of these. (See Ionizing Radiation, Nuclear Radiation, and Thermal Radiation.)

  DoD Missile Defense Agency - Cite This Source - This Definition
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  Cite Definition for radiation

  American Psychological Association (APA)

  radiation. (n.d.). MDA Glossary. Retrieved March 30, 2023, from website: http://www.expertglossary.com/definition/radiation.

  Chicago Manual of Style (CMS)

  radiation. www.mda.mil. MDA Glossary. DoD Missile Defense Agency. http://www.expertglossary.com/definition/radiation (accessed: March 30, 2023).

  Modern Language Association (MLA)

  "radiation." MDA Glossary. DoD Missile Defense Agency. 30 March. 2023 http://www.expertglossary.com/definition/radiation.

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