Editing Kilogram (section)

== External links ==
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| image2 = NIST: [http://patapsco.nist.gov/imagegallery/retrieve.cfm?imageid=49&dpi=72&fileformat=jpg K20, the US National Prototype Kilogram] resting on an egg crate fluorescent light panel
| image3 = BIPM: ''[https://web.archive.org/web/20070926215612/http://www.bipm.org/en/scientific/mass/pictures_mass/cleaning.html Steam cleaning a 1&nbsp;kg prototype before a mass comparison]''
| image4 = BIPM: [https://web.archive.org/web/20070926221138/http://www.bipm.org/en/scientific/mass/pictures_mass/vault.html The IPK and its six sister copies in their vault]
| image5 = The Age: [http://www.theage.com.au/ffximage/2007/06/14/rgN1506_csiro_wideweb__470x343,0.jpg Silicon sphere for the Avogadro Project]
| image6 = NPL: [http://www.npl.co.uk/content/conMediaFile/1083 The NPL's Watt Balance project]
| image7 = NIST: This particular [http://museum.nist.gov/object.asp?ObjID=51 Rueprecht Balance], an Austrian-made precision balance, was used by the NIST from 1945 until 1960
| image8 = BIPM: [https://web.archive.org/web/20070926215949/http://www.bipm.org/en/scientific/mass/research_mass/flexure-strip.html The FB{{nbhyph}}2 flexure-strip balance], the BIPM's modern precision balance featuring a standard deviation of one ten-billionth of a kilogram (0.1{{nbsp}}μg)
| image9 = BIPM: [https://web.archive.org/web/20070926220910/http://www.bipm.org/en/scientific/mass/pictures_mass/mettler.html Mettler HK1000 balance], featuring 1{{nbsp}}μg resolution and a 4{{nbsp}}kg maximum mass. Also used by NIST and Sandia National Laboratories' Primary Standards Laboratory
| image10 = Micro-g LaCoste: [http://www.microglacoste.com/images/FG5.small.jpg FG{{nbhyph}}5 absolute gravimeter], ([http://www.microglacoste.com/images/fg5schem.jpg diagram]), used in national laboratories to measure gravity to 2{{nbsp}}[[Gal (acceleration)|μGal]]<!--NOTE TO EDITORS: The Micro-g LaCoste Web site does not display properly on some computer systems. The accuracy is NOT 2&nbsp;mGal and is indeed 2&nbsp;μGal. Please see discussion topic at [[Talk:Kilogram#Micro-g_LaCoste_FG-5_accuracy]]--> accuracy
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* [https://www.nist.gov/public_affairs/releases/electrokilogram.cfm NIST Improves Accuracy of 'Watt Balance' Method for Defining the Kilogram]
* The UK's National Physical Laboratory (NPL): [<!-- http://www.npl.co.uk/server.php?show=ConWebDoc.2087 -->https://web.archive.org/web/20160323212037/http://www.npl.co.uk/reference/faqs/are-any-problems-caused-by-having-the-kilogram-defined-in-terms-of-a-physical-artefact-(faq-mass-and-density) <!-- An overview of the problems with an artefact-based kilogram -->Are any problems caused by having the kilogram defined in terms of a physical artefact? (FAQ – Mass & Density)]
* NPL: ''[http://www.npl.co.uk/science-technology/mass-and-force/research/npl-kibble-balance NPL Kibble balance]''
* Metrology in France: ''[http://www.french-metrology.com/en/feature/watt-balance.asp Watt balance] {{Webarchive|url=https://web.archive.org/web/20140319084923/http://www.french-metrology.com/en/feature/watt-balance.asp |date=March 19, 2014 }}''
* Australian National Measurement Institute: ''[http://www.measurement.gov.au/SCIENCETECHNOLOGY/Pages/MassandRelatedQuantities.aspx Redefining the kilogram through the Avogadro constant]''
* International Bureau of Weights and Measures (BIPM): [http://www.bipm.org/en/home/ Home page]
* NZZ Folio: ''[http://www.nzzfolio.ch/www/d80bd71b-b264-4db4-afd0-277884b93470/showarticle/fb0ba22e-46b7-43a5-8320-ef16483b7e91.aspx What a kilogram really weighs]''
* NPL: ''[<!-- http://www.npl.co.uk/server.php?show=ConWebDoc.1380 -->http://www.npl.co.uk/reference/faqs/what-are-the-differences-between-mass,-weight,-force-and-load-(faq-mass-and-density) What are the differences between mass, weight, force and load?]''
* BBC: ''[http://news.bbc.co.uk/2/hi/science/nature/7084099.stm Getting the measure of a kilogram]''
* NPR: ''[https://www.npr.org/templates/story/story.php?storyId=112003322 This Kilogram Has A Weight-Loss Problem]'', an interview with [[National Institute of Standards and Technology]] physicist Richard Steiner
* [https://web.archive.org/web/20110717124427/http://www.inrim.it/Nah/Web_Nah/home.htm Avogadro and molar Planck constants for the redefinition of the kilogram]
* [http://arquivo.pt/wayback/20160513163237/http://www.inrim.it/know/ Realization of the awaited definition of the kilogram]
* {{cite news |url=https://www.theguardian.com/science/2018/nov/09/in-the-balance-scientists-vote-on-first-change-to-kilogram-in-century |title=In the balance: scientists vote on first change to kilogram in a century |newspaper=[[The Guardian]] |first=Ian |last=Sample |date=November 9, 2018 |access-date=November 9, 2018}}

=== Videos ===
* [https://www.youtube.com/thebipm The BIPM] – [[YouTube]] channel
* [https://www.youtube.com/watch?v=yhgb23tAFFs "The role of the Planck constant in physics" – presentation at 26th CGPM meeting at Versailles, France, November 2018 when voting on superseding the IPK took place] on [[YouTube]]

{{SI units}}
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[[Category:SI base units]]
[[Category:Units of mass]]
[[Category:1000 (number)]]