Kilogram: Difference between revisions
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The '''kilogram''' is the [[International System of Units|SI]] unit of [[mass]]. | The '''kilogram''' is the [[International System of Units|SI]] unit of [[mass]]. | ||
At the end of the 18th century, a kilogram was the mass of a cubic decimeter of water. In 1889, the 1st CGPM sanctioned the international prototype of the kilogram, made of platinum-iridium, and declared: This prototype shall henceforth be considered to be the unit of mass. | |||
The 3d CGPM (1901), in a declaration intended to end the ambiguity in popular usage concerning the word "weight," confirmed that: | |||
<blockquote>The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram.</blockquote> | |||
Revision as of 21:45, 14 March 2007
The kilogram is the SI unit of mass.
At the end of the 18th century, a kilogram was the mass of a cubic decimeter of water. In 1889, the 1st CGPM sanctioned the international prototype of the kilogram, made of platinum-iridium, and declared: This prototype shall henceforth be considered to be the unit of mass.
The 3d CGPM (1901), in a declaration intended to end the ambiguity in popular usage concerning the word "weight," confirmed that:
The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram.