What are the units of length, time, mass, in SI?
January 19, 2021 | education
| In the international system of units SI, length, mass and time are the main physical units and have the following dimensions:
1) the unit of length is a meter (m, the length of the path that sunlight travels in a vacuum in 1/299792458 s);
2) the unit of time is a second (s, the time is 9192631770 periods of radiation of cesium-133 atoms);
3) mass unit – kilogram (kg, body weight, which is numerically equal to the international kilogram prototype).
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