The full form of SI is the International System of Units. It is also known as the “Metric System.” The SI is the most widely used system of measurement in the world and it is based on the metric system, which was first proposed in the late 18th century. The SI was officially adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960 and it is now maintained by the International Bureau of Weights and Measures (BIPM).
The SI consists of seven base units which are used to define the other units of measurement. These base units are:
The meter (m) for length
The kilogram (kg) for mass
The second (s) for time
The ampere (A) for electric current
The kelvin (K) for thermodynamic temperature
The mole (mol) for amount of substance
The cand (cd) for luminous intensity
In addition to the base units, the SI also includes a set of derived units which are defined in terms of the base units. Some examples of derived units include:
The newton (N) for force
The pascal (Pa) for pressure
The joule (J) for energy
The watt (W) for power
The volt (V) for electric potential difference
The SI is designed to be coherent, which means that the units of measurement are related to one another in a logical and consistent way. It also is designed to be easy to use and understand, and it is designed to be easily adaptable to new technologies and scientific discoveries. The SI is widely used in scientific research, industry, and international trade.
In conclusion, SI is an internationally recognized system of measurement that is based on the metric system. It is used to define the base and derived units of measurement. SI is a coherent, easy-to-use, and adaptable system of measurement that is widely used in many fields of science, industry, and international trade. It is maintained by the International Bureau of Weights and Measures (BIPM).