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  2. As seen on TV - Wikipedia

    en.wikipedia.org/wiki/As_seen_on_TV

    As seen on TV. " As seen on TV " is a generic phrase for products advertised on television in the United States for direct-response mail-order through a toll-free telephone number. As Seen on TV advertisements, known as infomercials, are usually 30-minute shows or two-minute spots during commercial breaks. These products can range from kitchen ...

  3. As Seen on TV: Is Aspray for real? - AOL

    www.aol.com/news/2009-08-24-as-seen-on-tv-is-a...

    You can even Aspray your privates." Then, to top it off, a woman is shown crossing her legs and spraying her crotch, followed by this line:. "Aspray is safe for all your odor zones." MSNBC told ...

  4. Roof prism - Wikipedia

    en.wikipedia.org/wiki/Roof_prism

    Roof prism. A roof pentaprism used in Single-lens reflex cameras; the lower right face is the roof ( dach ). A roof prism, also called a Dachkanten prism or Dach prism (from German: Dachkante, lit. "roof edge"), is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name.

  5. Optical coating - Wikipedia

    en.wikipedia.org/wiki/Optical_coating

    Optical coating. An optical coating is one or more thin layers of material deposited on an optical component such as a lens, prism or mirror, which alters the way in which the optic reflects and transmits light. These coatings have become a key technology in the field of optics. One type of optical coating is an anti-reflective coating, which ...

  6. Dispersive prism - Wikipedia

    en.wikipedia.org/wiki/Dispersive_prism

    Lamps as seen through a prism. In optics, a dispersive prism is an optical prism that is used to disperse light, that is, to separate light into its spectral components (the colors of the rainbow ). Different wavelengths (colors) of light will be deflected by the prism at different angles. [1] This is a result of the prism material's index of ...

  7. EnChroma - Wikipedia

    en.wikipedia.org/wiki/EnChroma

    EnChroma lenses are designed, manufactured, marketed and distributed by EnChroma, inc. in Berkeley, California. EnChroma glasses were invented incidentally in 2002 by Donald McPherson while trying to develop lenses to protect and aid surgeons during laser operations. The company received a grant from the NIH in 2005 and the glasses were ...

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