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  2. Tritium - Wikipedia

    en.wikipedia.org/wiki/Tritium

    Tritium (from Ancient Greek τρίτος (trítos) 'third') or hydrogen-3 (symbol T or 3 H) is a rare and radioactive isotope of hydrogen with a half-life of ~12.3 years. The tritium nucleus (t, sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of the common isotope hydrogen-1 (protium) contains one proton and no neutrons, and that of non-radioactive hydrogen ...

  3. List of the United States Army fire control and sighting ...

    en.wikipedia.org/wiki/List_of_the_United_States...

    This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.

  4. Tritium radioluminescence - Wikipedia

    en.wikipedia.org/wiki/Tritium_radioluminescence

    A "permanent" illumination watch dial Tritium-illuminated handgun night sights on an FN Five-seven. These light sources are most often seen as "permanent" illumination for the hands of wristwatches intended for diving, nighttime, or combat use. They are also used in glowing novelty keychains and in self-illuminated exit signs.

  5. Red dot sight - Wikipedia

    en.wikipedia.org/wiki/Red_dot_sight

    View through Tasco ProPoint red dot sight (model PDP2ST) on a Ruger 10/22. Made in Japan for Tasco, the ProPoint 2 was one of the first red dot sight models to become widely popular. A red dot sight is a common classification [1] for a non-magnifying reflector (or reflex) sight that

  6. Fast radio burst detected in 'dead' galaxy raises questions ...

    www.aol.com/fast-radio-burst-detected-dead...

    The CHIME telescopes in British Columbia detected the unusual fast radio burst, dubbed FRB 20240209A, in February 2024.

  7. Aimpoint - Wikipedia

    en.wikipedia.org/wiki/Aimpoint

    Aimpoint is a manufacturing company founded in 1974. [1] Their primary products are reflector (or reflex) sights, specifically the red dot sight sub-type. In 1975 they introduced their first product, [2] the "Aimpoint Electronic" red dot sight, based on a design by Helsingborg engineer John Arne Ingemund Ekstrand. [3]

  8. US probing about 2.6 million Tesla vehicles over 'Actually ...

    www.aol.com/news/us-probing-2-6-million...

    (Reuters) -The U.S. National Highway Traffic Safety Administration said on Tuesday it had opened a probe into about 2.6 million Tesla vehicles after reports of some crashes linked to its "Actually ...

  9. How to Watch the Last-Minute Northern Lights Display Tonight

    www.aol.com/watch-last-minute-northern-lights...

    The northern lights are expected to be strongest between Friday, Jan. 31, and Saturday, Feb. 1. The best time to view them is from 10:00 p.m. and 2 a.m. local time.

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