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posted by martyb on Tuesday September 14 2021, @06:52PM   Printer-friendly
from the accuracy-vs-precision dept.

https://www.zmescience.com/other/fahrenheit-vs-celsius-did-the-u-s-get-it-right-after-all/

At face value, measuring the temperature using Celsius instead of Fahrenheit seems to make a lot of face sense. After all, the freezing point of water is a perfect 0 degrees Celsius — not the inexplicable 32 degrees in Fahrenheit. Also, the boiling point of water in Celsius is right at 100 degrees (Okay, 99.98, but what's a couple hundredths of a degree among friends?) — instead of the awkward 212 degrees Fahrenheit.

Celsius is also part of the much-praised metric system. It seems as though every developed country in the world has adopted the metric system except for the United States, which still clings to tge [sic] older, more traditional measurements. Finally, scientists prefer to use Celsius (when they're not using Kelvin, which is arguably the most awkward unit of measurement for temperature). If it's good enough for scientists, it should be good enough for everybody else, right?

Not necessarily. Fahrenheit may be the best way to measure temperature after all. Why? Because most of us only care about air temperature, not water temperature.

[...] Fahrenheit is also more precise. The ambient temperature on most of the inhabited world ranges from -20 degrees Fahrenheit to 110 degrees Fahrenheit — a 130-degree range. On the Celsius scale, that range is from -28.8 degrees to 43.3 degrees — a 72.1-degree range. This means that you can get a more exact measurement of the air temperature using Fahrenheit because it uses almost twice the scale.


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  • (Score: 1, Interesting) by Anonymous Coward on Thursday September 16 2021, @06:49AM

    by Anonymous Coward on Thursday September 16 2021, @06:49AM (#1178212)

    I'm not the same AC, but the differences in usage isn't surprising because even different meteorological groups define "black ice" differently. The maritime weather usage has "black ice" that refers to accumulations of any ice that weighs more than a certain amount that the particular boat can handle. The NWS uses it to refer to any glazing ice on transportation surfaces specifically that is neither continual nor visible. The WMO uses it to refer to any transparent glazing on any surface caused by liquid water on land and to the columnar ice sheet that mostly forms on navigatible waters. The AMS uses it to refer to a form of glaze icing on below-freezing hard surfaces that has a similar columnar grain structure caused by drizzle or other forms of small non-supercooled liquid precipitation and condensation. There are also regional differences as well. In some places, you can only get black ice from sea spray and other only recognize icing on bridges. All of that is why even the official definitions are getting more and more general because the recognize that usage is descriptive not prescriptive and often context-dependent.

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