Science / Chemistry / Crystal: A sample of a crystalline solid that has a regular shape bound by plane surfaces (facets) that intersect at characteristic angles. The shape results from the arrangement of the substances atoms, ions, or molecules. Most crystals contain defects that can strongly affect their optical and electrical properties.
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Science / Chemistry / Perfect Crystal: A crystal with no defects or impurities, made of completely identical repeating subunits. Further, a perfect crystal has only one possible arrangement of subunits, with every subunit making exactly th MORE
Science / Chemistry / Crystallization: Production of a purer sample of a substance by slow precipitation of crystals from a solution of the substance. MORE
Technology / Television (TV) / Liquid Crystal Display: An LCD television or monitor uses liquid crystals that act as 'shutters' within the television screen. An LCD television has thousands of small light sources at the rear of the display. A layer of cel MORE