Find out how energy, frequency, and wavelength are related in terms of the electromagnetic spectrum.

Radio waves have the longest wavelengths in the electromagnetic spectrum. This NASA article discusses AM, FM, TV, cell phone, as well as radio astronomy, which all use this technology.

Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all...

NASA site provides information on waves, electromagnetic waves and their wavelengths.