| Definition: | electromagnetic radiation in which the electric field vector rotates at the radiation frequency, but varies in magnitude at a rate equal to twice the radiation frequency with the terminal point of the electric field vector describing an ellipse Note 1 to entry: Elliptically polarized radiation is described as right-handed (or left-handed) if the rotation of the electric field vector is clockwise (or anticlockwise) as viewed by an observer receiving the radiation.
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