polaroid

(from the article `light`) Natural light is polarized in passage through a number of materials, the most common being polaroid. Invented by the American physicist Edwin Land, a ...
Found on http://www.britannica.com/eb/a-z/p/86

Polaroid

noun (trade mark) a plastic film that can polarize a beam of light; often used in sunglasses to eliminate glare
Found on https://www.encyclo.co.uk/local/20974

Polaroid

[polarizer] Polaroid is the trademark for a type of synthetic plastic sheet which is used as a polarizer or polarizing filter, made by Polaroid Corporation. ==Patent== The original material, patented in 1929 and further developed in 1932 by Edwin H. Land, consists of many microscopic crystals of iodoquinine sulfate (herapathite) embedded in...
Found on http://en.wikipedia.org/wiki/Polaroid_(polarizer)

Polaroid

Polaroid: see Land, Edwin H.
Found on http://www.infoplease.com/ce6/sci/A0917603.html

Polaroid

[n] - (trade name) a plastic film that can polarize a beam of light
Found on http://www.webdictionary.co.uk/definition.php?query=Polaroid
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