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Some models have polarized lenses, made of Polaroid polarized plastic sheeting, to reduce glare caused by light reflected from non-metallic surfaces such as water (see Brewster's angle for how this works) as well as by polarized diffuse sky radiation (skylight). This can be especially useful to see beneath the surface of the water when fishing.
Costa Del Mar or simply Costa is an American manufacturer of polarized sunglasses based in Daytona Beach, Florida. [1] It is a wholly owned subsidiary of EssilorLuxottica. Their sunglasses are popular in the sport sunglasses market, and are considered good for outdoor sports practicing, such as Summer activities, recreational fishing and boating.
For the same reason sunglasses and filters were used by the American Army, especially for aviation, indeed Polaroid glasses were thought to protect aviator from sunlight but also atomic bomb explosions. [8] Cool-Ray was a division of American Optical for the sunglasses. It was the originator of the polarized sunglass as it is known today.
Photochromism does not have a rigorous definition, but is usually used to describe compounds that undergo a reversible photochemical reaction where an absorption band in the visible part of the electromagnetic spectrum changes dramatically in strength or wavelength. In many cases, an absorbance band is present in only one form.
Thus reflected light from horizontal surfaces (such as the surface of a road) at a distance much greater than one's height (so that the incidence angle of specularly reflected light is near, or usually well beyond the Brewster angle) is strongly s-polarized. Polarized sunglasses use a sheet of polarizing material to block horizontally-polarized ...
The most expensive sunglass brand in the world is technically Chopard, which has made the world's most expensive sunglasses – the Chopard de Rigo Vision, which sells for $408,000. But plenty of ...
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