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.
from General Physics News - Science News, Physics News, Physics, Material Sciences, Science https://ift.tt/BKY83Qx
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