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  2. Cathode-ray tube - Wikipedia

    en.wikipedia.org/wiki/Cathode-ray_tube

    The only visible differences are the single electron gun, the uniform white phosphor coating, and the lack of a shadow mask. A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [ 2 ]

  3. Glossary of firearms terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firearms_terms

    Battle rifle: A service rifle capable of semi-automatic or fully automatic fire of a full-power rifle cartridge. Bayonet lug: An attachment point at the muzzle end of a long gun for a bayonet. Belt: An ammunition belt is a device used to retain and feed cartridges into some machine guns in place of a magazine.

  4. Head-up display - Wikipedia

    en.wikipedia.org/wiki/Head-up_display

    A head-up display, or heads-up display, [1] also known as a HUD (/ hʌd /) or head-up guidance system (HGS), is any transparent display that presents data without requiring users to look away from their usual viewpoints. The origin of the name stems from a pilot being able to view information with the head positioned "up" and looking forward ...

  5. Bulletproof glass - Wikipedia

    en.wikipedia.org/wiki/Bulletproof_glass

    Bulletproof glass, ballistic glass, transparent armor, or bullet-resistant glass is a strong and optically transparent material that is particularly resistant to penetration by projectiles. Like any other material, it is not completely impenetrable. It is usually made from a combination of two or more types of glass, one hard and one soft. [1]

  6. Tritium radioluminescence - Wikipedia

    en.wikipedia.org/wiki/Tritium_radioluminescence

    Tritium radioluminescence. Radioluminescent 1.8- curie (67 GBq) 6-by-0.2-inch (152.4 mm × 5.1 mm) tritium vials are tritium gas-filled, thin glass vials with inner surfaces coated with a phosphor. Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light.

  7. Poly(methyl methacrylate) - Wikipedia

    en.wikipedia.org/wiki/Poly(methyl_methacrylate)

    Poly (methyl methacrylate) (PMMA) is the synthetic polymer derived from methyl methacrylate. It is used as an engineering plastic, and it is a transparent thermoplastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others (see below).

  8. Holographic weapon sight - Wikipedia

    en.wikipedia.org/wiki/Holographic_weapon_sight

    A view through an EOTech 512 holographic weapon sight. A holographic weapon sight or holographic diffraction sight is a non- magnifying gunsight that allows the user to look through a glass optical window and see a holographic reticle image superimposed at a distance on the field of view. [1] The hologram of the reticle is built into the window ...

  9. EOTech - Wikipedia

    en.wikipedia.org/wiki/EOTech

    EOTECH is an American company that designs, manufactures, and markets electro-optic and night vision products and systems. The company is headquartered in Plymouth, Michigan. They produce holographic weapon sights for small arms that have been adopted by various military and law enforcement agencies as close quarters battle firearm sights.