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SI - History | | SI - History: Encyclopedia II - SI - History | | The metric system was created during the French Revolution. On August 1, 1793 the National Convention adopted the new decimal "metre" with a provisional length as well as the other decimal units with preliminary definitions and terms. On April 7, 1795 (Loi du 18 germinal, an III) the terms gramme and kilogramme repaced the former terms "gravet" and "grave".
After the 18 Brumaire Year VIII, the metric system was definitively adopted in France by the First Consul Bonaparte, (the later Napoleon I) on Decembre 10, 1799 (Loi ...
See also:SI, SI - History, SI - Units, SI - SI writing style, SI - Spelling variations, SI - Cultural issues, SI - Trade | | | SI, SI - Cultural issues, SI - History, SI - SI writing style, SI - Spelling variations, SI - Trade, SI - Units, Units of measurement, Weights and measures, Mesures usuelles, Metrified English unit, History of measurement, Imperial units, U.S. customary units, Metre-tonne-second system of units, Chinese system of units, Planck units, Atomic units, Geometrized units, CODATA, Metrication, Metric system in the United States, Metrology, Coordinated Universal Time (UTC), Binary prefixes - used to quantify large amounts of computer data, Orders of magnitude, ISO 31 | | |
| | | SI: Encyclopedia II - SI - History
SI - History
See main articles: metre, kilogram, second, ampere, Kelvin, and candela.
The metric system was created during the French Revolution. On August 1, 1793 the National Convention adopted the new decimal "metre" with a provisional length as well as the other decimal units with preliminary definitions and terms. On April 7, 1795 (Loi du 18 germinal, an III) the terms gramme and kilogramme repaced the former terms "gravet" and "grave".
After the 18 Brumaire Year VIII, the metric system was definitively adopted in France by the First Consul Bonaparte, (the later Napoleon I) on Decembre 10, 1799 (Loi du 19 frimaire an VIII). During the history of the metric system a number of variations have evolved and their use spread around the world replacing many traditional measurement systems.
By the end of World War II a number of different systems of measurement were still in use throughout the world. Some of these systems were metric system variations whilst others were based on the Imperial and American systems. It was recognised that additional steps were needed to promote a worldwide measurement system. As a result the 9th General Conference on Weights and Measures (CGPM), in 1948, asked the International Committee for Weights and Measures (CIPM) to conduct an international study of the measurement needs of the scientific, technical, and educational communities.
Based on the findings of this study, the 10th CGPM in 1954 decided that an international system should be derived from six base units to provide for the measurement of temperature and optical radiation in addition to mechanical and electromagnetic quantities. The six base units recommended were the metre, kilogram, second, ampere, Kelvin degree (later renamed the kelvin), and the candela. In 1960, the 11th CGPM named the system the International System of Units, abbreviated SI from the French name: Le Système International d'Unités. The seventh base unit, the mole, was added in 1970 by the 14th CGPM.
The International System is now either obligatory or permissible throughout the world. It is administered by the standards organisation: the Bureau International des Poids et Mesures (International Bureau of Weights and Measures).
Other related archives18 Brumaire, 2009, American, American English, Atomic units, Binary prefixes, Blaise Pascal, Bureau International des Poids et Mesures, CGPM, CODATA, Chinese system of units, Coordinated Universal Time (UTC), European Union, First Consul, France, French Revolution, French language, General Conference on Weights and Measures, Geometrized units, History of measurement, ISO 31, Imperial, Imperial units, In the United States, International Committee for Weights and Measures, Japan, Kelvin, Litre, Mesures usuelles, Metre-tonne-second system of units, Metric system in the United States, Metrication, Metrified English unit, Metrology, NIST, Napoleon I, Orders of magnitude, Planck units, SI base unit, SI derived unit, SI prefix, U.S. customary units, UK, US, USSR, United Kingdom, United States, Units of measurement, Weights and measures, World War II, ampere, amperes, base units, candela, centimetre-gram-second, comma, commerce, conversion to metric units, coulombs, data, decimal, engineers, exponent, farads, history of the metric system, in terms of SI units, italic type, kilogram, litre, lower case, measurement systems, metre, metric system, mole, non-SI units accepted for use with SI, numeral system, ohms, other units, pascal, physicists, point, prefix, prefixes, promote a worldwide measurement system, radio engineers, science, second, solidus, standards organisation, system of units, systems of measurement, unit, volts
 Adapted from the Wikipedia article "History", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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