• Cethin@lemmy.zip
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    6 hours ago

    F and C are both made up points, not absolute values. C is great, if what you care about is what water is doing. F is great, if you care about how something feels to a human (not saying you can’t memorize new numbers, but 0 and 100 being dangerous is simple).

    If you want an actual “best” temperature scale, use Kelvin. 0 is no energy. It actually has a fundamental base. If you argue that temperatures that are useful to humans are too hard to memorize, then you’re making the argument against C too (or F when dealing with water).

    • dewritoninja@pawb.social
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      40 minutes ago

      F has nothing to do with how a human feels. 0 f was literally just a very cold day that happened once. You’re just used to it, the same way people who use c are used to it and feel it very intuitively. A scale that actually was human would probably be logarithmic since we dont feel temperature linearly, and the 0 would be at 20c ~68 f since that is the temperature that’s most comfortable for people, with positive numbers being hot temperatures and negative numbers being cold

    • Fleur_@aussie.zone
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      5 hours ago

      They are both made up but what is the fahrenheit? Where does the scale start? How much does it increment by? How does it relate to other units?

      Celcius starts at the melting point of water at sea level and each increment is 1% of the required change to turn water from frozen to boiling. This is arbitrary yes, but the importance is not if it’s arbitrary but that it is a description of a physical property in our world that can be experimentally repeated, tested and verified. No authority can arbitrarily decide that a degree Celcius is actually different from what it was last year.

      There’s a reason that all imperial units are scientifically described by their relation to their metric counterpart and it’s because metric units are based on physical properties of the universe around us and so we can measure them as opposed to just define them.

      • Cethin@lemmy.zip
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        3 hours ago

        They are both made up but what is the fahrenheit? Where does the scale start? How much does it increment by? How does it relate to other units?

        0F is the same, but for brine. 100F was what was believed to be body temperature (still, close enough).

        This is arbitrary yes, but the importance is not if it’s arbitrary but that it is a description of a physical property in our world that can be experimentally repeated, tested and verified.

        They both can. Notably, the definitions that you and I both gave aren’t actually how they’re defined anymore. They’re both defined using Kelvin, because that’s the one that’s actually more valid. C and F are just defined as points on that scale. An authority literally did decide it’s a different value than years before, as the pressure at sea level is somewhat variable. They decided to use universal constants, that K is defined with, to define both of these scales.

        There’s a reason that all imperial units are scientifically described by their relation to their metric counterpart and it’s because metric units are based on physical properties of the universe around us and so we can measure them as opposed to just define them.

        See above. You’re thinking of SI units, not metric. They’re mostly the same, except notably the SI unit for temperature is Kelvin, not Celsius.