A system of units is a whole of measuring units usually employed in fields of human activity, presenting characters of coherence which facilitate of it the Usage between the organizations of an human society.
History
Since the Civilization S developed, the men sought to develop systems of units coherent, in order to facilitate the exchanges, as well scientific, as Culturel S, economic S, and Financier S.
Time
The Temps was the first standardized unit, in the Western companies. This process, initiated by Denys Small the (6th century, was then taken again by Bède Worthy the (Comput, 8th century), then by Birtferth (An 1000).The Usage of the date counted starting from the birth of Jesus-Christ (with an error from 4 to 6 years) started to be essential in the administrative acts towards the An millet. The Julien calendar presenting a drift compared to the dates of the equinoxes, it was necessary to carry out an adjustment at the 16th century, with the Gregorian Calendrier.
This calendar was gradually deployed in the world, and is adopted by the majority of the countries, except five Islamic countries.
Outdistance
The Mètre was defined at the end of the 18th century, during the French revolution (1793) like measuring unit of the distances. The mathematician Gaspard Monge was one of the promoters.
See too
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