User:Dave3457/Sandbox/Circular polarization Introduction
From Wikipedia, the free encyclopedia
In electrodynamics, circular polarization[2] of an electromagnetic wave is a polarization where the tip of the electric field vector, at a fixed point in space, describes a circle as time progresses. (Refer to animation). If the wave is frozen in time the electric field vector describes a helix along the direction of propagation. Circular polarization is a limiting case of the more general condition of elliptical polarization. The other special case is the easier-to-understand linear polarization.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/8/81/Circular.Polarization.Circularly.Polarized.Light_Right.Handed.Animation.305x190.255Colors.gif)
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