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> That's why Kelvins are a unit and °C aren't Could I ask that you update Wikipedia with your discovery? Sadly the page appears to be erroneously using the wor
by peteretep 8y ago
> That's why Kelvins are a unit and °C aren't
Could I ask that you update Wikipedia with your discovery? Sadly the page appears to be erroneously using the word "unit" all over the place! https://en.wikipedia.org/wiki/Celsius https://en.wikipedia.org/wiki/Celsius
Also, NIST might benefit from your guidance: https://physics.nist.gov/cuu/Units/kelvin.html https://physics.nist.gov/cuu/Units/kelvin.html
- thaumasiotes 8y agoIt's already there, if you know enough to recognize it: > The degree Celsius (°C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference between two temperatures In other words, you can add a quantity of °C to a temperature value and you'll get another temperature value. But you can't measure a temperature in °C. Compare how, for example, the python datetime library uses a datetime type and a timedelta type. A datetime plus a timedelta is a datetime. datetimes refer to points in time, and timedeltas don't. °C measures a temperature delta, but not a temperature.
- peteretep 8y ago> It's already there, if you know enough to recognize it "As an SI derived unit", "or a unit to indicate", "the unit was called" Three mentions of it being a unit in the first paragraph, alone. I understand the point being made; the conclusion that "celsius is not a unit" is bogus, however, by any common definition, including NIST's. In a now-deleted comment, you linked to a Wikipedia page on Dimensional Analysis, which includes the sentence "to convert from units of Fahrenheit to units of Celsius".
- deleted 8y ago[deleted]