Talk:Degree symbol

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[edit] Represents the Sun

I agree with that fact. I read it in my Astronomy textbook. —The preceding unsigned comment was added by 67.188.172.165 (talk • contribs) .

Do you have an ISBN? Or author and title? —Keenan Pepper 18:19, 22 September 2006 (UTC)

[edit] Degrees and torsors

When one is being scientifically pedantic, there is a distinction with affine points and vectors between them. That is, there is a distinction between the temperature at which water boils, 100 °C, and the temperature difference between 50 °C and 150 °C, also written 100 °C. The same is true of points in space versus displacements and between moments in time and durations in time. It seems that historically the degree symbol tends to be used with relative values such as temperature and angles, although that usage isn't strict.

Are there any systems in which this usage is strict? That is, where 300 K + (–100 °K) = 200 K? —Ben FrantzDale 16:46, 15 January 2007 (UTC)

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