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The kilogram (also kilogramme [1]) is the base unit of mass in the International System of Units (SI), having the unit symbol kg. It is a widely used measure in science, engineering and commerce worldwide, and is often simply called a kilo colloquially. [2] It means 'one thousand grams '.
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The kilogram is the base unit of mass in the International System of Units (SI), having the unit symbol kg. It is a widely used measure in science, engineering and commerce worldwide, and is often simply called a kilo colloquially. It means 'one thousand grams'.
Nov 16, 2018 · Metrologists — experts in the science of measurement — refer to the metal lump as the International Prototype Kilogram, or IPK. Others call it “Le Grand K.”. It is the one true kilogram in ...
May 14, 2018 · Learn how the kilogram was redefined in 2018 from a single artifact to a constant of nature, the Planck constant. Find out how NIST manages and calibrates the kilogram standard and its various prototypes, and how the new system of mass measurement compares to the old one.
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