• Soapbox@lemmy.zip
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    17 days ago

    The biggest problem is that we use a mixture of both systems for different things.

    As already mentioned. We measure small drinks in fluid ounces, but large bottles of soda in liters.

    Those of us with 3D printers set nozzle and bed temps in Celsius, but we set our ovens to cook with in Fahrenheit.

    We use metric to describe the length of runs, 5k, 10k, until you get to marathons which are 26.22 miles.

    We use feet and inches for construction and woodworking for the most part, but often use millimeters for designing small parts. (at least I do. Fractions of inches are dumb.)

    Most science is in the USA is done in metric. But the Mars Climate Orbiter was lost due to software reporting miles as kilometers.

    Even the meme about bullets is inconsistent. Some are measured in mm some are measured in fractions or decimals of an inch. like .223 or .30-06

    I really wish we could have just powered through and more strictly enforced the metrication process.

    • captainlezbian@lemmy.world
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      16 days ago

      Every field of engineering in America either switched to metric after an expensive disaster caused by conversion or is waiting on the expensive disaster to switch

      • Soapbox@lemmy.zip
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        16 days ago

        Yep, 42.195km technically. But here in the USA people put these 5k, 10k, etc stickers on their cars to show what runs they’ve done. But switch to 26.22 for marathons stickers.

  • Tyrq@lemmy.dbzer0.com
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    17 days ago

    A 9mm is 1/12192 of an imperial football field.

    (or so my very basic search told me for the sake of a joke, if someone wants to do the math, feel free to prove ddgAI wrong lol)

    • jon@lemmy.dbzer0.com
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      17 days ago

      If you use the entire length of an American football field endzone to endzone that is accurate. However, most people would use the length excluding the endzones which is 100 yards. Which would make it

      100 yards = 91440 mm
      91440 mm / 9 mm = 1/10160 of a football field
      
      • Tyrq@lemmy.dbzer0.com
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        17 days ago

        Excellent, thank you. When people use a football field as a unit of measurement, I wasn’t sure if that included the end zones or not, but I figured they’d use the larger of the two, because America

  • Alcoholicorn@mander.xyz
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    17 days ago

    Best part is that the measurement is only tangentially related to the actual diameter of the bullet; FN 5.7×28mm, 5.56 NATO, and the soviet 5.6×39mm are all 5.7mm across.

    Unlike gauge, which is always 1 over the cube root of the barrel diameter divided by the cube root of the density of lead.

  • Zephyr@sh.itjust.works
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    16 days ago

    Just let them know their peen will sound far more impressive in cm than inches and they’ll switch overnight. It’s 10 is far better than 4.