Talk:Degree (temperature)

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[edit] °C vs C° for differences

I've changed it to "the usage is sometimes seen reversed" because the usage is not universal and doesn't appear to be part of the SI definitions. A Celsius temperature itself is a difference to a reference temperature. All I found at http://www.bipm.org/en/si/si_brochure/chapter2/2-1/2-1-1/kelvin.html is that "A difference or interval of temperature may be expressed in kelvins or in degrees Celsius". C° or F° seem to be used chiefly in meteorology, right? Somebody who knows please elaborate on the history and where or where not this convention is followed. Femto 16:54, 17 Dec 2004 (UTC)