Electromagnetic Waves - The Physics Hypertextbook
Such a solution is an electromagnetic wave. Let's examine . electromagnetic waves propagate at the speed of light and that; light is an electromagnetic wave.
http://physics.info/em-waves/

Electromagnetic radiation - Wikipedia, the free encyclopedia
Electromagnetic radiation is a transverse wave, meaning that the oscillations of the waves are perpendicular to the direction of .
http://en.wikipedia.org/wiki/Electromagnetic_radiation

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