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International System of Units (view source)
Revision as of 11:36, April 27, 2007
, 11:36, April 27, 2007no edit summary
The [[International System of Units]] ([[France|French]] ''Système International d'Unités'', ''Système International'' or '''SI''' for short) is the agreed-upon system for measurement as adopted by periodic meetings of the forty-six-member ''Conférence Générale des Poids et Mesures'' (General Conference on Weights and Measures, abbreviated CGPM). It was developed in 1960 from the [[meter-kilogram-second]] (MKS) system and replaces the [[centimeter-gram-second]] (cgs) system.
The [[International System of Units]] ([[France|French]] ''Système International d'Unités'', ''Système International'' or '''SI''' for short) is the agreed-upon system for measurement as adopted by periodic meetings of the forty-six-member ''Conférence Générale des Poids et Mesures'' (General Conference on Weights and Measures, abbreviated CGPM). It was developed in 1960 from the [[meter-kilogram-second]] (MKS) system and replaces the [[centimeter-gram-second]] (cgs) system.
The SI system introduced several new units for physical terms and continues to change to this day as forms of measurement expand. Definitions have been subject to change through the years, and generally depend on assumptions that the CGPM makes about what is permanent and what is not.
The SI system introduced several new units for physical terms and continues to change to this day. As measurement accuracy improves, so the standards against which measures are calibrated must also be defined to higher accuracy. Definitions have been subject to change through the years, and generally depend on assumptions that the CGPM makes about what is permanent and what is not.
Nearly all developed countries have adopted the SI system of units as official. The [[United States of America]] also uses the [[US customary system]], which is defined in terms of metric units since the Convention on the Meter.
Nearly all developed countries have adopted the SI system of units as official. The [[United States of America]] also uses the [[US customary system]], which is defined in terms of metric units since the Convention on the Meter.