← Aulder reveision
Reveision as o 03:31, 14 Mey 2013
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A '''year''' (frae [[Auld Sassenach leid|Auld Inglis]] ''[[jēram|gēar]]''; Gothic ''jēr''; Runic ''[[jēran]]'') is a [[unit]] o [[time]] based on the [[orbital period]] o the [[The Yird|Yird]] movin aroond the [[Sun]]. Fur an observer at is oan the Yird, thes corresponds tae the period it taes the sun tae complete a body coorse throoghit the [[zodiac]] alang the [[ecliptic]]. In [[astronomy]], the [[Julian year (astronomy)|Julian year]] is a unit o time at is defined as 365.25 [[day]]s o {{gaps|86|400}} [[second|si second]]s each (no [[leap second]]s).[[international astronomical union]] "[http://www.iau.org/science/publications/proceedings_rules/units/ SI units]" accessed februar 18, 2010. (see table fife an section fife.15.) reprinted frae [[George A. Wilkins]] & iau commission fife, [http://www.iau.org/static/publications/stylemanual1989.pdf "the iau style manual (1989)"] (pdf file) in ''[[iau transactions]]'' vol. xxb thaur is nae universally accepted symbol fur the year as a unit o time. The [[International Seestem o Units]] disnae propose a bodie. A common abbreviation in international uisage is '''a''' (fur the Latin wird ''[[:wikt:annus|annus]]''), in sassenach also '''y''' ur '''yr'''. Due tae the Yird's [[axial tilt]], the coorse o a year sees the passin o the [[season]]s, marked bi changes in [[weaither]], hoors o [[daylight]], an consequently [[vegetation]] an [[fertility (soil)|fertility]]. In [[temperate]] an [[subpolar climate|subpolar]] regions, generally fower seasons ur recognized: ''[[sprin (season)|spring]]'', ''[[summer]]'', ''[[autumn]]'' an ''[[winter]]'', astronomically marked bi the sun reachin the points o [[equinox]] an [[solstice]], althoogh the climatic seasons [[seasonal lag|lag behind]] their astronomical markers. In some [[tropics|tropical]] an [[subtropical]] regions it is mair common tae spick o the [[wit season|rainy]] (ur dreich, ur [[monsoon]]) season versus the [[dry season]]. A [[calendar year]] is an approximation o the Yird's orbital period in a given [[calendar]]. A calendar year in the [[Gregorian calendar]] (as weel as in the [[julian calendar]]) haes either 365 ([[common year]]s) ur 366 ([[leap year]]s) days. The wuid "year" is also uised o periods loosely associated but nae strictly identical wi either the astronomical ur the calendar year, sic as the [[seasonal year]], the [[fiscal year]] ur the [[academic year]], etc. bi extension, the term ''year'' can pure techt the orbital period o onie [[planet]]: fur example, a "martian year" is the time in which mars completes its ain orbit. The term is also applied mair broadly tae onie lang period or cycle, sic as the "[[great year]]".[[oed]], s.v. "year", entry tae.b.: "''transf.'' applied tae a huir uv a lang period ur cycle (in chronology ur mythology, ur vaguely in poetic uise)."
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A '''year''' (frae [[Auld Sassenach leid|Auld Inglis]] ''[[jēram|gēar]]''; Gothic ''jēr''; Runic ''[[jēran]]'') is a [[unit]] o [[time]] based on the [[orbital period]] o the [[The Yird|Yird]] movin aroond the [[Sun]]. Fur an observer at is oan the Yird, thes corresponds tae the period it taes the sun tae complete a body coorse throoghit the [[zodiac]] alang the [[ecliptic]]. In [[astronomy]], the [[Julian year (astronomy)|Julian year]] is a unit o time at is defined as 365.25 [[day]]s o {{gaps|86|400}} [[second|si second]]s each (no [[leap second]]s).[[international astronomical union]] "[http://www.iau.org/science/publications/proceedings_rules/units/ SI units]" accessed februar 18, 2010. (see table fife an section fife.15.) reprinted frae [[George A. Wilkins]] & iau commission fife, [http://www.iau.org/static/publications/stylemanual1989.pdf "the iau style manual (1989)"] (pdf file) in ''[[iau transactions]]'' vol. xxb thaur is nae universally accepted symbol fur the year as a unit o time. The [[International Seestem o Units]] disnae propose a bodie. A common abbreviation in international uisage is '''a''' (fur the Latin wird ''[[:wikt:annus|annus]]''), in sassenach also '''y''' ur '''yr'''. Due tae the Yird's [[axial tilt]], the coorse o a year sees the passin o the [[season]]s, marked bi changes in [[weaither]], hoors o [[daylight]], an consequently [[vegetation]] an [[fertility (soil)|fertility]]. In [[temperate]] an [[subpolar climate|subpolar]] regions, generally fower seasons ur recognized: ''[[sprin (season)|spring]]'', ''[[summer]]'', ''[[autumn]]'' an ''[[winter]]'', astronomically marked bi the sun reachin the points o [[equinox]] an [[solstice]], althoogh the climatic seasons [[seasonal lag|lag behind]] their astronomical markers. In some [[tropics|tropical]] an [[subtropical]] regions it is mair common tae spick o the [[wit season|rainy]] (ur dreich, ur [[monsoon]]) season versus the [[dry season]]. A [[calendar year]] is an approximation o the Yird's orbital period in a given [[calendar]]. A calendar year in the [[Gregorian calendar]] (as weel as in the [[julian calendar]]) haes either 365 ([[common year]]s) ur 366 ([[leap year]]s) days. The wird "year" is also uised o periods loosely associated but nae strictly identical wi either the astronomical or the calendar year, sic as the [[seasonal year]], the [[fiscal year]] or the [[academic year]], etc. bi extension, the term ''year'' can pure techt the orbital period o onie [[planet]]: fur example, a "martian year" is the time in which mars completes its ain orbit. The term is also applied mair broadly tae onie lang period or cycle, sic as the "[[great year]]".[[oed]], s.v. "year", entry tae.b.: "''transf.'' applied tae a huir uv a lang period ur cycle (in chronology ur mythology, ur vaguely in poetic uise)."
== Etymology ==
== Etymology ==
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== Symbol ==
== Symbol ==
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Thaur is nae universally accepted symbol fur the year as a unit o time. The [[International Seestem o Units]] disnae propose a body. Nist sp811 {{cite joornal |author=Ambler Thompson, Barry N. Taylor |url=http://physics.nist.gov/document/sp811.pdf |format=pdf |publisher=[[national institute o standards an technology]] (nist) |title=special publication 811: Guide for the use of the International System of Units (SI) |paragraph=8.1 |year=2008 }} an iso 80000-3:2006 {{cite web |publisher=[[international organization fur standardization]] |url=http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=31888 |title=iso 80000-3:2006, quantities and units – part 3: space and time |location=geneva, switzerland |year=2006 }} suggest the symbol ''[[a (year)|a]]'', taen frae the Latin wuid ''annus''.{{cite web |work=haw mony? a dictionary o units o measurement |author=russ rowlett |publisher=university o north carolina |title=units: a |url=http://www.unc.edu/~rowlett/units/dicta.html |accessdate=january 9, 2009 }} in sassenach, the abbreviations "y" ur "yr" ur sometimes uised, specifically in [[geology]] an [[paleontology]], whaur "kyr, myr, byr" (thoosands, millions, an even billions o years, respectively) an similar abbreviations ur uised tae denote intervals o time remote frae the present. {{cite web |url=http://www.agu.org/pubs/style_guide_intro.html |publisher=american geophysical union |title=agu editorial style guide fur authors |date=september 21, 2007 |accessdate=2009-01-09 |archiveurl = http://web.archife.org/web/20080714134306/http://www.agu.org/pubs/style_guide_intro.html |archivedate = 2008-07-14}} {{cite joornal |author=north american commission oan stratigraphic nomenclature |url=http://ngmdb.usgs.gov/info/nacsn/code2/code2.html#article13 |title=north american stratigraphic code |joornal=The American Association o Petroleum Geologists Bulletin |volume=89 |issue=11 |month=november |year=2005 |pages=1547–1591 |doi= |edition=article 13 (c) }}
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Thaur is nae universally accepted symbol fur the year as a unit o time. The [[International Seestem o Units]] disnae propose a body. Nist sp811 {{cite joornal |author=Ambler Thompson, Barry N. Taylor |url=http://physics.nist.gov/document/sp811.pdf |format=pdf |publisher=[[national institute o standards an technology]] (nist) |title=special publication 811: Guide for the use of the International System of Units (SI) |paragraph=8.1 |year=2008 }} an iso 80000-3:2006 {{cite web |publisher=[[international organization fur standardization]] |url=http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=31888 |title=iso 80000-3:2006, quantities and units – part 3: space and time |location=geneva, switzerland |year=2006 }} suggest the symbol ''[[a (year)|a]]'', taen frae the Latin wird ''annus''.{{cite web |work=haw mony? a dictionary o units o measurement |author=russ rowlett |publisher=university o north carolina |title=units: a |url=http://www.unc.edu/~rowlett/units/dicta.html |accessdate=january 9, 2009 }} in sassenach, the abbreviations "y" ur "yr" ur sometimes uised, specifically in [[geology]] an [[paleontology]], whaur "kyr, myr, byr" (thoosands, millions, an even billions o years, respectively) an similar abbreviations ur uised tae denote intervals o time remote frae the present. {{cite web |url=http://www.agu.org/pubs/style_guide_intro.html |publisher=american geophysical union |title=agu editorial style guide fur authors |date=september 21, 2007 |accessdate=2009-01-09 |archiveurl = http://web.archife.org/web/20080714134306/http://www.agu.org/pubs/style_guide_intro.html |archivedate = 2008-07-14}} {{cite joornal |author=north american commission oan stratigraphic nomenclature |url=http://ngmdb.usgs.gov/info/nacsn/code2/code2.html#article13 |title=north american stratigraphic code |joornal=The American Association o Petroleum Geologists Bulletin |volume=89 |issue=11 |month=november |year=2005 |pages=1547–1591 |doi= |edition=article 13 (c) }}
=== Symbol "A" ===
=== Symbol "A" ===