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  2. Polaroid (polarizer) - Wikipedia

    en.wikipedia.org/wiki/Polaroid_(polarizer)

    Polarizing sheets are used in liquid-crystal displays, optical microscopes and sunglasses.Since Polaroid sheet is dichroic, it will absorb impinging light of one plane of polarization, so sunglasses will reduce the partially polarized light reflected from level surfaces such as windows and sheets of water, for example.

  3. Polarized 3D system - Wikipedia

    en.wikipedia.org/wiki/Polarized_3D_system

    Their Polaroid filters, stapled over rectangular openings where the headlights ought to be, were very small. [ 12 ] Cardboard glasses with earpieces and larger filters were used to watch Bwana Devil , the feature-length color 3-D film that premiered on 26 November 1952 and ignited the brief but intense 3-D fad of the 1950s.

  4. Dichroism - Wikipedia

    en.wikipedia.org/wiki/Dichroism

    Dichroism, in the second meaning above, occurs in liquid crystals due to either the optical anisotropy of the molecular structure or the presence of impurities or the presence of dichroic dyes. The latter is also called a guest–host effect .

  5. Polarizer - Wikipedia

    en.wikipedia.org/wiki/Polarizer

    However, this crystal is seldom used as a polarizer, since the dichroic effect is strongly wavelength dependent and the crystal appears coloured. Herapathite is also dichroic, and is not strongly coloured, but is difficult to grow in large crystals. A Polaroid polarizing filter functions similarly on an atomic scale to the wire-grid polarizer ...

  6. Herapathite - Wikipedia

    en.wikipedia.org/wiki/Herapathite

    Herapathite, or iodoquinine sulfate, is a chemical compound whose crystals are dichroic and thus can be used for polarizing light. It was discovered in 1852 [1] by William Bird Herapath, a Bristol surgeon and chemist. One of his pupils found that adding iodine to the urine of a dog that had been fed quinine produced unusual green

  7. Why Did Jeffrey Dahmer Take Polaroid Photos of His Victims ...

    www.aol.com/lifestyle/why-did-jeffrey-dahmer...

    In 1991, police discovered Jeffrey Dahmer had 84 polaroid photos depicting 17 murders he committed between 1978 to 1991. The act is shown in 'Monster: The Jeffrey Dahmer Story' on Netflix.

  8. Polaroid Eyewear - Wikipedia

    en.wikipedia.org/wiki/Polaroid_Eyewear

    Polaroid Eyewear manufactures polarized sunglasses and polarized lenses, as well as optical frames, reading glasses, and clip-on lenses. Polaroid Eyewear was a part of the StyleMark group and sold to the Safilo Group in November 2011.

  9. Crystal optics - Wikipedia

    en.wikipedia.org/wiki/Crystal_optics

    Crystal optics is the branch of optics that describes the behaviour of light in anisotropic media, that is, media (such as crystals) in which light behaves differently depending on which direction the light is propagating. The index of refraction depends on both composition and crystal structure and can be calculated using the Gladstone–Dale ...