• ricecake@sh.itjust.works
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    6 days ago

    Ugh, I’m one of those people who will defend imperial as not being irrational, just built ad-hoc for purposes that aren’t in alignment with modern ones and … No, that’s not what Fahrenheit is.

    Fahrenheit was trying to make a temperature scale that was easy to recreate to ease the calibration of thermometers. Zero is a temperature that can be created in your garage with some ice, salt and water. 100 was his best, ultimately inaccurate, attempt to measure human body temperature, since it’s another easy calibration point, and from there water was defined as 32 and 212 so that they were 180 degrees apart, which would fit will on a temperature dial.
    Not irrational, not a comfort scale, and not in alignment with current needs.

    It’s pure coincidence that it kinda lines up with comfortable outdoor temperatures in the opinion of a good chunk of a population living in the northern part of the western hemisphere.

    • Swedneck@discuss.tchncs.de
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      1 day ago

      i’ve never understood how people imagine an easier scale to calibrate than celsius, what is easier than freezing and boiling water??

      Human body temperature isn’t an easy calibration point, are you gonna shove it up your ass to calibrate it, or what?

      • ricecake@sh.itjust.works
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        1 day ago

        Well, first off he wasn’t actually doing it after Celsius existed as a temperature scale. He made it a solid 18 years beforehand.
        Second, there are some issues. Specifically, ice freezes at 0, but it doesn’t stop getting colder. So if you have a bit of ice, that doesn’t tell you the temperature, just that it’s below a threshold. Boiling is more convenient because liquid water can’t get above 100, but you do have to consider side pressure.
        Fahrenheit used brine because as it freezes it forces salt out of the ice, making it more resistant to freezing. It self stabilizes its temperature, which is immensely handy.

        None of the people designing their scales envisioned that using the basic reference points for common calibration would be a thing. Just like how we don’t calibrate them with brine, ice, steam or butts today, instead relying on how we marked down how electrical resistance changes as a function of temperature and then calibrated reference numbers to get the scale right.

        It’s important to remember that the people in the past were largely not stupid, they simply hadn’t found out something we take for granted or they had priorities that we don’t.

    • OldChicoAle@lemmy.world
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      6 days ago

      Yeah we know it’s a coincidence. That’s kinda a part of the joke. No need to flex your knowledge here Mr smarty pants