| Line 235: |
Line 235: |
| | | | |
| | == Reference == | | == Reference == |
| − | [http://www.sizes.com/units/SI.htm SI] at Sizes.com | + | [[http://www.bipm.org/en/si/si_brochure/]] The official, definitive definition of the SI system, from the Bureau Internationale des Poids et Mesures. |
| | | | |
| − | [http://physics.nist.gov/Pubs/SP811/contents.full.html] NIST Guide to the SI System | + | [http://physics.nist.gov/Pubs/SP811/contents.full.html] Guide to the SI System from NIST, the lead federal agency on all metrology issues for the US. |
| | + | |
| | + | |
| | + | [http://www.sizes.com/units/SI.htm SI] at Sizes.com. |
| | | | |
| | == See Also == | | == See Also == |