[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/non-si-units-mentioned-in-the-si\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki19\/non-si-units-mentioned-in-the-si\/","headline":"Non-SI units mentioned in the SI","name":"Non-SI units mentioned in the SI","description":"From Wikipedia, the free encyclopedia Unit accepted for use in the International System of Units This is a list of","datePublished":"2017-01-29","dateModified":"2017-01-29","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki19\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki19\/non-si-units-mentioned-in-the-si\/","about":["Wiki"],"wordCount":2677,"articleBody":"From Wikipedia, the free encyclopediaUnit accepted for use in the International System of UnitsThis is a list of units that are not defined as part of the International System of Units (SI) but are otherwise mentioned in the SI Brochure,[1] listed as being accepted for use alongside SI-units, or for explanatory purposes.Table of ContentsUnits officially accepted for use with the SI[edit]Other units defined but not officially sanctioned[edit]Changes to units mentioned in the SI[edit]See also[edit]Notes and references[edit]Notes[edit]References[edit]Units officially accepted for use with the SI[edit]The SI prefixes can be used with several of these units, but not, for example, with the non-SI units of time.Other units defined but not officially sanctioned[edit]The following table lists units that are effectively defined in side- and footnotes in the 9th SI brochure.  Units that are mentioned without a definition or that occur in historical material recorded in the appendices are not included.Changes to units mentioned in the SI[edit]With the publication of each edition of the SI brochure, the list of non-SI units listed in tables changed compared to the preceding SI brochures.[3]  The table below compares the status of each unit for which the status has changed between editions of the SI Brochure.NameSymbol1st\u20133rd SI Brochures4\u20136th SI Brochures7th SI Brochure8th SI Brochure9th SI Brochureastronomical unitau[note 4]acceptednot mentionedacceptedacceptedacceptedparsecpcacceptednot mentionednot mentionednot mentionednot mentionedneperNpnot mentionednot mentionedacceptedlistedacceptedbelbnot mentionednot mentionedacceptedlistedaccepteddecibeldbnot mentionednot mentionednot mentionedlistedacceptedunified atomic mass unit[note 3]uacceptedacceptedacceptedacceptedfootnote onlydalton[note 3]Danot mentionednot mentionedfootnote onlyacceptedacceptednatural unit (n.u.) of speedc0not mentionednot mentionednot mentionedlistednot mentionedn.u. of action\u0127not mentionednot mentionednot mentionedlistednot mentionedn.u. of massmenot mentionednot mentionednot mentionedlistednot mentionedn.u. of time\u0127\/(mec02)not mentionednot mentionednot mentionedlistednot mentionedatomic unit (a.u.) of chargeenot mentionednot mentionednot mentionedlistednot mentioneda.u. of massmenot mentionednot mentionednot mentionedlistednot mentioneda.u. of action\u0127not mentionednot mentionednot mentionedlistednot mentioneda.u. of lengtha0not mentionednot mentionednot mentionedlistednot mentioneda.u. of energyEhnot mentionednot mentionednot mentionedlistednot mentioneda.u. of time\u0127\/Ehnot mentionednot mentionednot mentionedlistednot mentionednautical mileMtemporarily acceptedtemporarily acceptedtemporarily acceptedlistednot mentionedknotkntemporarily acceptedtemporarily acceptedtemporarily acceptedlistednot mentioned\u00e5ngstr\u00f6m\u00c5temporarily acceptedtemporarily acceptedtemporarily acceptedlistednot mentionedareatemporarily acceptedtemporarily acceptedtemporarily acceptednot mentionednot mentionedhectarehatemporarily acceptedtemporarily acceptedtemporarily acceptedacceptedacceptedbarnbtemporarily acceptedtemporarily acceptedtemporarily acceptedlistednot mentionedbarbartemporarily acceptedtemporarily acceptedtemporarily acceptedlistednot mentionedstandard atmosphereatmtemporarily acceptedlistedlistednot mentionednot mentionedgalGaltemporarily acceptedtemporarily acceptedlistedlistedfootnote onlycurieCitemporarily acceptedtemporarily acceptedlistednot mentionednot mentionedroentgenRtemporarily acceptedtemporarily acceptedlistednot mentionednot mentionedradradtemporarily acceptedtemporarily acceptedlistednot mentionednot mentionedremremnot mentionedtemporarily acceptedlistednot mentionednot mentionedergerglistedlistedlistedlistednot mentioneddynedynlistedlistedlistedlistednot mentionedpoisePlistedlistedlistedlistednot mentionedstokesstlistedlistedlistedlistednot mentionedmaxwellMxlistedlistedlistedlistednot mentionedgaussGlistedlistedlistedlistednot mentioned\u00f8rstedOelistedlistedlistedlistednot mentionedphotphlistedlistedlistedlistednot mentionedfermilistedlistedlistednot mentionednot mentionedmetric caratlistedlistedlistednot mentionednot mentionedtorrTorrlistedlistedlistednot mentionednot mentionedkilogram-forcekgflistedlistednot mentionednot mentionednot mentionedcaloriecallistedlistedlistednot mentionednot mentionedmicron\u03bclistedlistedlistednot mentionednot mentionedx-unitxulistedlistednot mentionednot mentionednot mentionedstilbsblistedlistednot mentionednot mentionednot mentionedgamma (Mass)\u03b3listedlistedlistednot mentionednot mentioned\u03b3 (magnetic flux density)\u03b3listedlistednot mentionednot mentionednot mentionedlambda\u03bblistedlistednot mentionednot mentionednot mentionedjanskyJynot mentionednot mentionedlistednot mentionednot mentionedmillimetre of mercurymmHgnot mentionednot mentionednot mentionedlistednot mentionedIn this table, the status descriptions have the following meanings:“accepted”: The unit is accepted for use with the SI.“temporarily accepted”: The unit is accepted for use with the SI, but is planned to be phased out.“listed”: The unit is defined in a table of units in the brochure but not accepted for use with the SI.“footnote only”: The unit is defined in a footnote or side note, without any mention in the main text.“not mentioned”: There is no mention of the unit in the brochure, excluding historical appendices.See also[edit]Notes and references[edit]Notes[edit]^ A footnote in the 9th SI Brochure gives an exact definition of the dalton.^ This is a unit employed in geodesy and geophysics to express acceleration due to gravity.^ a b c The unified mass unit (u) is a synonym of the dalton (Da). In edition 9 (2019) of the SI Brochure, the unified mass unit is no longer listed as being accepted for use with SI units, though it notes its equivalence with the dalton in a footnote. In edition 8 (2006), both names were mentioned in parallel. In edition 7 (1998), position was the reverse of that in edition 9. Earlier editions mentioned only u.^ The symbol given for the astronomical unit changed from ua in the 8th to au in the 9th SI Brochure.References[edit]^ Bureau international des poids et mesures, “Non-SI units that are accepted for use with the SI”, in: Le Syst\u00e8me international d’unit\u00e9s (SI) \/ The International System of Units (SI), 9th ed. (S\u00e8vres: 2019), ISBN\u00a09789282222720, c. 4, pp. 145\u2013146.^ a b “2018 CODATA Value: atomic mass constant”. The NIST Reference on Constants, Units, and Uncertainty. NIST. 20 May 2019. Retrieved 2019-05-20.^ Bureau international des poids et mesures, Le Syst\u00e8me international d’unit\u00e9s (SI) \/ The International System of Units (SI), 8th ed. (S\u00e8vres: Organisation Intergouvernementale de la Convention du M\u00e8tre, 2006\u201105), ISBN\u00a09282222136.  "},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/non-si-units-mentioned-in-the-si\/#breadcrumbitem","name":"Non-SI units mentioned in the SI"}}]}]