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The degree symbol ° is usually used, followed by the initial letter of the unit; for example, "°C" for degree Celsius. A degree can be defined as a set change in temperature measured against a given scale; for example, one degree Celsius is one-hundredth of the temperature change between the point at which water starts to change state from ...
In the case of degrees of angular arc, the degree symbol follows the number without any intervening space, e.g. 30°.The addition of minute and second of arc follows the degree units, with intervening spaces (optionally, non-breaking space) between the sexagesimal degree subdivisions but no spaces between the numbers and units, for example 30° 12 ′ 5″.
The degree Celsius (symbol: °C) can refer to a specific point on the Celsius temperature scale or to a difference or range between two temperatures. It is named after the Swedish astronomer Anders Celsius (1701–1744), who proposed the first version of it in 1742.
Is there a policy about spaces before or after the degree symbol in temperatures? For example, 32°F (no space), 32° C, (space after degree symbol) 27 °C (space before degree symbol)? The main pages shows the second one for degrees, minutes, and seconds, so is that preferred for temerature too? Bubba73 02:45, July 25, 2005 (UTC)
Only figures are used with unit symbols (12 min not twelve min); but figures or words may be used with unit names (12 minutes or twelve minutes), subject to the provisions above. Other numbers. Other numbers are given in numerals (3.75, 544) or in forms such as 21 million (or billion, trillion, etc. – but rarely thousand or hundred).
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For example, IUPAC has, since 1982, defined standard reference conditions as being 0 °C and 100 kPa (1 bar), in contrast to its old standard of 0 °C and 101.325 kPa (1 atm). [2] The new value is the mean atmospheric pressure at an altitude of about 112 metres, which is closer to the worldwide median altitude of human habitation (194 m). [10]
The word y ("and") is used to denote minutes past or after the hour (e.g. las cinco y diez for "ten minutes past five"). If more than thirty minutes have elapsed since the last full hour, minutes to the hour are expressed using the word menos ("minus") (e.g. las diez menos cinco; "five minutes to ten").