IS system
system?
Project Work
On an outline map of India, trace the route followed by
the Aryans. Also mark the seven rivers.
List five features of the Vedic Age which have continued
till today
Mathematics was highly developed during the Vedic Ag
write about its usefulness.
Answers
The International System of Units, known by the international abbreviation SI[a] in all languages[2]: 125 [3]: iii [4] and sometimes pleonastically as the SI system,[b] is the modern form[2]: 117 [7]:41[8] of the metric system[g] and the world's most widely used system of measurement.[2]: 123 [10]:252[11] Established and maintained[12] by the General Conference on Weights and Measures[j] (CGPM[k]), it is the only system of measurement with an official status[m] in nearly every country in the world,[n] employed in science, technology, industry, and everyday commerce. The SI comprises a coherent[o] system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance), and candela (cd, luminous intensity). The system can accommodate coherent units for an unlimited number of additional quantities. These are called coherent derived units, which can always be represented as products of powers of the base units.[p] Twenty-two coherent derived units have been provided with special names and symbols.[q] The seven base units and the 22 coherent derived units with special names and symbols may be used in combination to express other coherent derived units.[r] Since the sizes of coherent units will be convenient for only some applications and not for others, the SI provides twenty prefixes which, when added to the name and symbol of a coherent unit[s] produce twenty additional (non-coherent) SI units for the same quantity; these non-coherent units are always decimal (i.e. power-of-ten) multiples and sub-multiples of the coherent unit.[t][u] The SI is intended to be an evolving system; units and prefixes are created and unit definitions are modified through international agreement as the technology of measurement progresses and the precision of measurements improves.