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Come to that, the "degrees" in "degrees Celsius" is just as redundant. Why don't we just say 20C?

Quote from: Geezer on 15/01/2012 01:33:01Come to that, the "degrees" in "degrees Celsius" is just as redundant. Why don't we just say 20C?No, it is not quite as redundant. We say "degrees" celsius because celsius is not some sort of amount of stuff. 2 metre is twice as much as 1 metre, 2 kilogram is twice as much as 1 kilogram, 2 kelvin is twice as much as 1 kelvin, but 2 degrees celsius is NOT twice as much as 1 degree celsius (unless we are talking about temperature difference rather than temperature as such!)

A change in temperature of 1 degree C is exactly the same as a change in temperature of 1degree K, and a doubling of temperature in K does not mean there is twice as much of any particular "stuff".Inserting "degree" does not help. It's an anachronism.

Quote from: Geezer on 16/01/2012 00:59:15A change in temperature of 1 degree C is exactly the same as a change in temperature of 1degree K, and a doubling of temperature in K does not mean there is twice as much of any particular "stuff".Inserting "degree" does not help. It's an anachronism.Geezer, 2K does mean twice as much "temperature" as 1K. 2°C does NOT mean twice as much temperature as 1°C. Temperature as "stuff" is expressed in such other quantities as heat energy, average kinetic energy, gas pressure, etc.(and I had already pointed out that temperature change was quantifiable in °C in a way that temperature per se was not).

Quote from: damocles on 16/01/2012 01:10:01Quote from: Geezer on 16/01/2012 00:59:15A change in temperature of 1 degree C is exactly the same as a change in temperature of 1degree K, and a doubling of temperature in K does not mean there is twice as much of any particular "stuff".Inserting "degree" does not help. It's an anachronism.Geezer, 2K does mean twice as much "temperature" as 1K. 2°C does NOT mean twice as much temperature as 1°C. Temperature as "stuff" is expressed in such other quantities as heat energy, average kinetic energy, gas pressure, etc.(and I had already pointed out that temperature change was quantifiable in °C in a way that temperature per se was not).Yes, but that's all it means. There certainly is not twice as much heat or some other "stuff".By the way, another thing that blows a hole in your argument is that the degree symbol is still used in Rankine temperatures []