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  1. The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement. Coordinated by the International Bureau of Weights and Measures (abbreviated BIPM from French: Bureau international des ...

  2. International System of Units (SI), international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960, it is abbreviated SI in all languages. Rapid advances in science and technology in the 19th and 20th centuries fostered the ...

    • The Editors of Encyclopaedia Britannica
  3. The metric system is a decimal -based system of measurement. The current international standard for the metric system is the International System of Units (Système international d'unités or SI), in which all units can be expressed in terms of seven base units: the metre (m), kilogram (kg), second (s), ampere (A), kelvin (K), mole (mol), and ...

  4. The SI is a system of measurement built on the previous incarnation of the metric system or the metre–kilogram–second system, or MKS. It was formed to resolve inconsistencies between the MKS and the centimetre–gram–second system, or CGS. The SI was formed by international agreement in 1960, and it builds on the MKS and adds additional ...

  5. Apr 12, 2010 · The International System of Units (SI), commonly known as the metric system, is the international standard for measurement. The International Treaty of the Meter was signed in Paris on May 20, 1875 by seventeen countries, including the United States and is now celebrated around the globe as World Metrology Day.

  6. The International System of Units is the standard modern form of the metric system. The name of this system can be shortened or abbreviated to SI, from the French name Système International d'unités. The International System of Units is a system of measurement based on 7 base units: the metre (length), kilogram (mass), second (time), ampere ...

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  8. Sep 29, 2023 · Defining the International System of Units (SI) Download the image files for this logo. Early weights and measures began out of the need for civilizations to understand the complexities of their environment and to create a form of commerce. Archeological evidence shows human beings used available resources to conduct their business.

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