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Wikify, add reference and see also. Will expand page later
'''Radio waves''' are a part of the electromagnetic spectrum. They typically defined as having wavelengths longer than about a centimetre, though this value depend on the definition. Therefore, radio waves have the longest wavelength and lowest energy of any type of electromagnetic radiation. They are generally used for communication.
'''Radio waves''' are a part of the [[electromagnetic spectrum]].<ref name=britannica>{{cite web|url=https://www.britannica.com/science/radio-wave|title=Radio wave|accessdate=2018-12-19}}</ref> They typically defined as having [[wavelength]]s longer than about a centimetre, though this value depend on the definition. Therefore, radio waves have the longest wavelength and lowest [[energy]] of any type of electromagnetic radiation. They are generally used for [[communication]].
==See also==
*[[Electromagnetic spectrum]]
*[[Visible light]]
*[[Microwave]]
==References==
{{reflist}}
[[Category:Physics]]
[[Category:Electromagnetism]]
[[Category:Radio]]
[[Category:Radio]]