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

User MatDobek
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The visible light has wavelength in therange 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- Radiowaves - used in communication 
User Andrii Starusiev
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