SI Base Quantities and Units.
The System of units which is at present internationally accepted for measurement is the Systeme Internationale d'Unites (French for International System of Units) abbreviated as SI. The SI, with standard scheme of symbols,units and abbreviations, was developed and recommended by General Conference an Weights and Measures in 1971 for international usage in scientific, technical, industrial and commercial work. Because SI units used decimal system, conversions within the system are quite simple and convenient. BASE QUANTITY : Length SI UNITS : Name: metre Symbol: m Definition: The metre is the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second.(1983) BASE QUANTITY : Mass SI UNITS : Name: kilogram Symbol: kg Definition:...
