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The kilogram (also spelled kilogramme [1]) is the base unit of mass in the International System of Units (SI), equal to one thousand grams. It has the unit symbol kg. [1] The word "kilogram" is formed from the combination of the metric prefix kilo-(meaning one thousand) and gram; [2] it is colloquially shortened to "kilo" (plural "kilos"). [3]The kilogram is an SI base unit, defined ultimately ...
Learn how the kilogram, the SI unit of mass, was redefined in 2018 based on a constant of nature, and how NIST disseminates the definition of the kilogram. Explore the history and challenges of mass measurement, from the platinum-iridium cylinder to the Planck constant.
Kilogram, basic unit of mass in the metric system. A kilogram is very nearly equal (it was originally intended to be exactly equal) to the mass of 1,000 cubic cm of water. It was once defined in terms of a platinum-iridium cylinder, but in 2018 the CGPM agreed to define it in terms of Planck's constant.
Learn how the kilogram, the SI unit of mass, is defined by the Planck constant and the speed of light. Find out the exact relation between the kilogram and the other defining constants of the SI system.
The meaning of KILOGRAM is the base unit of mass in the International System of Units that is defined by setting the fixed numerical value of Planck's constant to 6.62607015 x 10—34 joule seconds. How to use kilogram in a sentence. Did you know?
Learn about the kilogram, the base unit of mass in the International System of Units (SI), and its history, definition, and conversions. Find out the difference between mass and weight, and how they relate to the kilogram.
Learn the difference between kilogramme and kilogram, two terms for the same metric unit of mass. Find out why kilogram is the preferred and modern spelling, and when kilogramme is still used in historical contexts.
Definition of kilogramme in the Definitions.net dictionary. Meaning of kilogramme. What does kilogramme mean? Information and translations of kilogramme in the most comprehensive dictionary definitions resource on the web.
Learn the meaning, pronunciation and usage of the metric unit of weight, kilogram or kilogramme, in British and American English. Find out the origin, synonyms, sentences and translations of kilogram in different languages.
By 1799, a platinum artifact known as the "Kilogramme des Archives" was introduced as the definitive standard. This was later replaced in 1889 by the International Prototype of the Kilogram (IPK) , a cylinder crafted from a platinum-iridium alloy, stored at the International Bureau of Weights and Measures (BIPM) in France.