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  2. Yttrium - Wikipedia

    en.wikipedia.org/wiki/Yttrium

    In 1787, part-time chemist Carl Axel Arrhenius found a heavy black rock in an old quarry near the Swedish village of Ytterby (now part of the Stockholm Archipelago). [33] Thinking it was an unknown mineral containing the newly discovered element tungsten , [ 34 ] he named it ytterbite [ e ] and sent samples to various chemists for analysis.

  3. Detonator - Wikipedia

    en.wikipedia.org/wiki/Detonator

    An equivalent strength cap comprises 0.40-0.45 grams of PETN base charge pressed in an aluminum shell with bottom thickness not to exceed to 0.03 of an inch, to a specific gravity of not less than 1.4 g/cc, and primed with standard weights of primer depending on the manufacturer.

  4. Cartridge (firearms) - Wikipedia

    en.wikipedia.org/wiki/Cartridge_(firearms)

    The second number reflects case length (in inches or mm). For example, the 7.62×51mm NATO refers to a bore diameter of 7.62 mm and has an overall case length of 51 mm, with a total length of 71.1 mm. The commercial version is the .308 Winchester. In older black powder cartridges, the second number typically refers to powder charge, in grains.

  5. Black powder cartridge - Wikipedia

    en.wikipedia.org/wiki/Black_powder_cartridge

    Black powder cartridge refers to firearms ammunition from the period after the introduction of metallic cartridge, but prior to the wide adoption of smokeless powder.These cartridges (frequently but not always single-shot) had adopted the new technology of complete cartridges including a brass casing which held the powder charge, bullet, and primer.

  6. New federal rule bans 'junk fees' on hotels, live-event tickets

    www.aol.com/federal-rule-bans-junk-fees...

    In a sweeping change that could save American consumers time and money -- the Federal Trade Commission (FTC) on Tuesday finalized a rule that would ban surprise "junk fees" for live event tickets ...

  7. Would a government shutdown affect mail delivery? What to know

    www.aol.com/news/government-shutdown-affect-mail...

    The president with the highest number of shutdown days is Jimmy Carter, who had 56 days in five separate shutdowns from 1977 to 1979. Bill Clinton is third with 26 days in a single year in 1995.

  8. Rare-earth element - Wikipedia

    en.wikipedia.org/wiki/Rare-earth_element

    The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [1] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.

  9. 10 Retro Video Game Consoles That Are Surprisingly Valuable Today

    www.aol.com/finance/10-retro-video-game-consoles...

    Though it hoped to revolutionize handheld gaming, the console ultimately fell short due to its shorter battery life and limited game library. Still, niche collectors praise the Neo Geo for the ...