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  2. Sylvania Electric Products - Wikipedia

    en.wikipedia.org/wiki/Sylvania_Electric_Products

    The Hygrade Sylvania Corporation was formed when NILCO, Sylvania and Hygrade Lamp Company merged into one company in 1931. In 1939, Hygrade Sylvania started preliminary research on fluorescent technology, and later that year, demonstrated the first linear, or tubular, fluorescent lamp. It was featured at the 1939 New York World's Fair. [1]

  3. Havells Sylvania - Wikipedia

    en.wikipedia.org/wiki/Havells_Sylvania

    1964 — Deluxe Mercury Lamp; Following Sylvania's invention of the red-emitting phosphor for colour television screens, a spinoff application created the modern deluxe colour mercury lamp. [7] 1966 — MetalArc; Invention of the sodium-scandium lamp chemistry which continues to set the standard for metal halide lighting all over the world. [8]

  4. Movie projector - Wikipedia

    en.wikipedia.org/wiki/Movie_projector

    35 mm movie projector in operation Bill Hammack explains how a film projector works. A movie projector (or film projector) is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.

  5. Osram Sylvania - Wikipedia

    en.wikipedia.org/wiki/Osram_Sylvania

    Osram Sylvania Inc. is the North American operation of lighting manufacturer Osram. It was established in January 1993, with the acquisition of GTE's Sylvania lighting division by Osram GmbH. [1] In 2016, Osram spun off its general lighting business to Ledvance which received a license to sell lighting products under the Osram and Sylvania ...

  6. Halogen lamp - Wikipedia

    en.wikipedia.org/wiki/Halogen_lamp

    The length (sometimes also referred to as "height") of any two-ended cylindrical bulb must be specified separately from its form factor code, usually in millimeters, as must the lamp's voltage and wattage— hence, T3 120 V 150 W 118 mm means a double-ended tube-shaped bulb with a diameter of 9.5 mm (3 ⁄ 8 in) that operates at 120 V and is ...

  7. Ultra-high-performance lamp - Wikipedia

    en.wikipedia.org/wiki/Ultra-high-performance_lamp

    Ultra-high-performance lamp. An ultra-high-performance lamp, often known by the Philips trademark UHP, is a high-pressure mercury arc lamp. [1] These were originally known as ultra-high-pressure lamps, [2] [3] because the internal pressure can rise to as much as 200 atmospheres when the lamp reaches its operating temperature.