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Learn about the kilogram, the base unit of mass in the SI system, and its definition in terms of three fundamental constants. Find out how the kilogram was originally defined as the mass of one litre of water and how its name changed over time.
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.
Learn how to convert kilograms to other weight units and vice versa using online tools and formulas. Kilograms are the most widely used unit of mass worldwide, defined by a platinum-iridium block in France.
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 basic unit of mass in the metric system, and its origin, evolution, and redefinition. Find out how Planck's constant and the International System of Units are related to the kilogram.
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 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.
Learn the difference between kilogram and kilogramme, two spellings of the same word in English and French. Find out why kilogram is more common and preferred in English and how to use it in spoken and written language.
The word kilogramme or kilogram is derived from the French kilogramme, [15] which itself was a learned coinage, prefixing the Greek stem of χίλιοι khilioi "a thousand" to gramma, a Late Latin term for "a small weight", itself from Greek γράμμα. [16]
Learn the meaning of kilogram, a unit of mass equal to 1,000 grams or 2.2 pounds, with examples from literature and business. Find out how to say kilogram in different languages and use the translator tool.