[photography] A polarizing filter or polarising filter is often placed in front of the camera lens in photography in order to darken skies, manage reflections, or suppress glare from the surface of lakes or sea. Since reflections (and sky-light) tend to be at least partially linearly-polarized, a linear polarizer can be used to change the b...
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http://en.wikipedia.org/wiki/Polarizing_filter_(photography)
(from the article `optics`) Polarizing filters have the property of transmitting light that vibrates in one direction while absorbing light that vibrates in a perpendicular ... ...through because the polarization passed by the first filter is precisely the polarization blocked by the second filter. When optically active ... [2 relate...
Found on
http://www.britannica.com/eb/a-z/p/86
Usually indicates a linear polarizing filter. A linear polarizing filter eliminates various degrees of reflected light from glass, water, plastic, paper and similar surfaces. It can also eliminate light reflections from vapours or floating dust to emphasize a blue sky. Polarizing filters transmit light waves that vibrate in a single direction only;...
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http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
An optical filter that transmits light in only one direction (perpendicular to the light path), out of 360° possible. The effect is such that it can eliminate some unwanted bright areas or reflections, such as when looking through a glass window or the surface of water. In photography, polarizing filters are used very often to darken a blue sky.
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Found on
http://www.zoo.co.uk/~z0001325/Glossary.html
No exact match found.
