SI UNITS

The International System of Units (Le Système International d'Unités) defined by an international gathering convened to establish agreements on the most frequently used units of measurement. The Conference on Weights and Measures in 1960 adopted standard measures based on the meter/kilogram/second units and radiation quantities based on the becquerel, gray, and sievert. The units adopted by the conference represent the currently preferred measures of length, mass, time, radiation, and so on.