International System of Units: Quick Facts

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Facts

Also Known As	Système International d’Unités • SI System • SI

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Understanding the International System of Units in science

How are SI-derived units of measurement calculated?

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metric ton nanometre mole kilogram second metre kelvin ampere ohm gram metric system apothecaries’ weight avoirdupois weight troy weight Astronomical unit nautical mile calorie week month horsepower

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