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Electromagnetic Spectrum |
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| The electromagnetic spectrum is a range of energetic radiation that includes radio waves, microwaves, infrared light, visible light, ultraviolet light, X rays, and gamma rays. Visible light, which makes up only a tiny fraction of the electromagnetic spectrum, is the only electromagnetic radiation that humans can perceive with their eyes. Astronomers examine radiation of all wavelenghts emitted by a celestial body. | ||||||
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| Appears in these articles: | ||||||
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| Astronomy; Photon; Gamma Ray; Light; Electromagnetic Radiation | ||||||
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