IUPAC > Gold Book > alphabetical index > Y > year
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year
Non-SI unit of time, Math - ei. The year is not commensurable with the day and not a constant. The value given corresponds to the Gregorian calendar year (Math - ei).
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IUPAC > Gold Book > math/physics > units
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Cite as: IUPAC Compendium of Chemical Terminology, Electronic version, http://goldbook.iupac.org/Y06723.html.
Transformed and rewritten from PDF version (entry http://www.iupac.org/goldbook/Y06723.pdf)
by: Miloslav Nic, Jiri Jirat, Bedrich Kosata, ICT Prague, Czech Republic
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