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DALLAS — An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some other parts of the U.S. hit by the plunging polar vortex this week ...
Abstract: Vortex retarders are optical retarders with a uniform retardance and fast axis orientation that varies azimuthally, which generates a Laguerre-Gaussian beam. Their spectropolarimetric ...
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