• Kirby@discuss.tchncs.de
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      1 year ago

      to a european like me 90 ‘%’ or 20 ‘%’ human comfort would be very confusing - you could probably guess that one is hot and the other’s not but I’d have no point of reference until I convert it to Celcius. I think the numbers that someone grows up with will always make more sense no matter what

        • DarthFrodo@lemmy.world
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          1 year ago

          So 0°F was defined as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride (why in the world?). Originally, 90°F was set as human body temperature, which was later changed first to 96°F, and now it’s about 98.6°F.

          Celsius is just: 0°C is the freezing temperature of water 100°C is the boiling temperature of water

          Nobody uses a scale between -18 and 38. People in countries using Celsius just learned as a child that body temperature is 38°C, that’s all. -18°C has no special meaning to us.

          At 0°C outside it’s freezing (32°F). 10°C is quite cool (50°F), you’ll need a jacket. 20°C is a comfortable temperature for me, if it’s sunny (68°F). 30°C is getting rather warm (86°F). 40°C is hell outside, or a bad fever (104°F). To boil water, heat it to 100°C (212°F).

          I get that this seems confusing at first when you’re used to completely different orientation points, but for people who are used to C, it’s very intuitive.

    • arc@reddthat.com
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      1 year ago

      I get where you’re coming from cause you’re used to F, so comparing it to C naturally keeps you thinking of F as baseline (would be the same for me the other way around). But saying that C aint on a 0-100 scale is just objectively wrong. At 0 C water freezes, at 100 C water boils. It’s still a 0-100 scale, just based on something different. When it comes to metric vs imperial, it’s an easy conclusion to me, when it comes to temperature I think it’s more nuanced. I don’t have a better explanation on the difference other than “F is human focused” while “C is science focused” (I know, doesn’t quite cover it, just the best I got)

      But then again, it really comes down to what you’re used to feeling “right”. For example, I could make similar conversions from C to F instead, and get weird numbers (water freezes at 32, and boils at 212? That makes no sense)

      Never had too strong of an opinion on what temperature unit to use, but I will say this. C is a lot closer to K (kelvin) which is what is used for science, while converting F to K is a mess. So the one benefit C gives is a slightly easier time to get into that

      I do need to let the nerd in me get this out too, F used to also be defined by water freezing/boiling. Meaning that technically C is a 0-100 scale, while F is a 32-212 scale. (Nowadays they’re both defined by K, making this point kinda irrelevant)

        • illectrility@sh.itjust.works
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          1 year ago

          Fahrenheit has one advantage here: You’re used to it. If you’re used to Celsius, you know that 25° is warm and 5° is cold and don’t give a shit about it not being a 0-100 scale for that particular use case.

          The 0-100 thing is pretty much the only argument I’ve ever heard in favor of Fahrenheit btw. Again, if you’re used to one of them, that’s the one that will make the most sense.

          Being used to Celsius has the advantage of automatically being used to Kelvin. For example, if you ever want to calculate anything to do with the energy required to heat something to a certain temperature, you will have a way better time with Kelvin. Being used to and measuring in Celsius helps a lot here.

          But sure, I get that you’re used to Fahrenheit. It’s just that the whole world has decided to use Celsius. Honestly, for good reason.

        • Kusimulkku@lemm.ee
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          1 year ago

          When it’s snowing and freezing outside is very helpful knowledge for places where that happens. That being at zero is nice.

          I’m dead long before water boils

          No sauna for you I guess

    • fastandcurious@lemmy.worldOP
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      1 year ago

      You are entitled to your opinion and obviously have your own preference and your way of explaining the scale is very good as well, but saying that Celsius is objectively worse is just wrong.

    • RandomVideos@programming.dev
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      1 year ago

      Why does this matter? I have no idea what 0% or heat means, but know what -18° or 38° mean. For me 32% heat doesnt mean anything.

      How hot it feels can change. In summer, 10°C feels cold, but in winter it feels hot

      A lot more people use °C so more people would have to relearn how temperature is measured

      I dont think either of them is better than the other, its just that you got used to what numbers means its hot or cool

    • set_secret@lemmy.world
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      1 year ago

      The argument for Fahrenheit based on a perceived “0 to 100 scale” representing a percentage of heat can be critiqued as it misunderstands how temperature scales work. Temperature is not a percentage system; it’s a measure of thermal energy. The notion that 70 degrees Fahrenheit represents “70% heat” is not scientifically accurate as it implies that temperature is a linear scale capped at 100, which it is not. The Fahrenheit scale was actually based on arbitrary points: the freezing point of brine (0°F) and the average human body temperature (96°F at the time, which has since been adjusted to 98.6°F).

      Celsius, on the other hand, is based on the freezing and boiling points of water at 0°C and 100°C respectively, under standard atmospheric conditions. This makes it a decimal and scientifically consistent system that is easier to relate to the states of water, an essential reference in science and daily life.

      Comparing temperatures to percentages, like test scores, is a flawed analogy because temperature doesn’t have an upper limit “score” and is not designed to be read as a proportion. The scale from -18 to 38 in Celsius correlates directly with the physical properties of water, which is logical for scientific purposes.

      Moreover, many argue that Celsius is more intuitive for everyday weather-related use outside of the U.S., as the scale is more granular for colder climates (where a one-degree change in Celsius is noticeable) and aligns well with the metric system, which is used globally for scientific measurement.