Defining the International System of Units (SI) | NIST
https://www.nist.gov/nist-museum/defining-international-system-units-si
WebSep 29, 2023 · Over time, advances in technology have resulted in more precise measurements, generating an evolution of definitions for the Système Internationale, or International System of Units (SI). These units are known as the meter (m), kilogram (kg), second (s), kelvin (K), candela (cd), mole (mol), and ampere (A). METER (m) Measurement of Length.
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