The polarization of light underpins a variety of recent technological innovations, including 3D cinema and LCDs. In LCDs, tiny electronically controllable liquid crystal elements are sandwiched between polarizers. If, instead, other transparent polarization-altering films--like cellophane gift wrap and packaging tape--are placed between a set of polarizers, an array of polarization-filtered colors can be observed.
The polarization of light underpins a variety of recent technological innovations, including 3D cinema and LCDs. In LCDs, tiny electronically controllable liquid crystal elements are sandwiched between polarizers. If, instead, other transparent polarization-altering films--like cellophane gift wrap and packaging tape--are placed between a set of polarizers, an array of polarization-filtered colors can be observed.
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