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04-08-2016
Physics

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What waves have wavelengths longer than those of visible light? Give an example of how each kind of wave is used.

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14-07-2017

The visible light has wavelength in the range 400 - 700 nano-meters. The wavelengths longer than visible light are: 1-Infrared waves (used in ringtone/mobile waves)2-microwaves - used to heat and cook food. 3- Radio waves - used in communication purposes.

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