How do humans use electromagnetic waves?
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Everyday life is pervaded by artificially made electromagnetic radiation: food is heated in microwave ovens, airplanes are guided by radar waves, television sets receive electromagnetic waves transmitted by broadcasting stations, and infrared waves from heaters provide warmth
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The electromagnetic waves in the electromagnetic spectrum are used in a wide range of applications: Radio waves are transmitted through air easily. They do not cause damage if they are absorbed by the human body. These properties make them ideal for communication such as radio and television.
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