એકમ: આવૃત્તિઓ વચ્ચેનો તફાવત

'''એકમ માટેની આતરરાષ્ટ્રીય પ્રણાલી -SI [[International System of Units]]:'''

 

{{Main|SI base unit|SI derived unit|Metric prefix}}

The International System of Units consists of a set of units together with a set of [[SI prefix|prefixes]]. The units are divided into two classes—'''base units''' and '''derived units'''. There are seven [[SI base unit|base units]], each representing, by convention, [[Dimensional analysis|different kinds of physical quantities]].