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[[File:Reversal of handedness of circularly polarized light reflected by mirror 2s.gif|thumbnail|A 3-slide series of pictures taken with and without a pair of MasterImage 3D circularly polarized movie glasses of some dead European rose chafers (Cetonia aurata) whose shiny green color comes from left-polarized light. Note that, without glasses, both the beetles and their images have shiny color. The right-polarizer removes the color of the beetles but leaves the color of the images. The left-polarizer does the opposite, showing reversal of handedness of the reflected light.]]
===Conversion to
Circularly polarized light can be converted into linearly polarized light by passing it through a quarter-[[waveplate]]. Passing linearly polarized light through a quarter-waveplate with its axes at 45° to its polarization axis will convert it to circular polarization. In fact, this is the most common way of producing circular polarization in practice. Note that passing linearly polarized light through a quarter-waveplate at an angle ''other'' than 45° will generally produce elliptical polarization.
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