SYSTEMS OF UNITS:

 SYSTEMS OF UNITS:

             A complete set of units, both basic and derived, used for the measurement of all kinds of physical quantities is called system of units. e.g

i) The foot-pound-second (FPS) system.

ii) The meter-kilogram-second (MKS) system.

iii) The centimeter-gram-second (CGS) system.

iv) System International (SI). Seven quantities are chosen as basic and their units are accepted

        as standard units. These units are m, kg, s, A, K, cd and mol.

  SYSTEM INTERNATIONAL (SI):

Until 1960, many of the countries of the world used different systems of units. With the expansion of international trade and the universalization of science & technology, it was felt necessary to introduce a uniform international system of units. So in 1960, it was decided in an international conference to adopt an international system (SI) of units. In SI seven quantities are chosen as basic, their units are accepted as standard units. (Table Basic units)