International System of Units of Measurement

Directive 80/181/EEC of 20 December 1979

Article of

Categories

Various utilities

Posted on

29th June 2023

M easurement Unit International System

The units of measurement of the International System (SI) are provided for by Directive 80/181/EEC of 20 December 1979.

SI Fundamental Units

SI derived units

Frequency	hertz	Hz
Strengths	newton	N
Pressure – Tension	pascal	Pa
Work – Energy – amount of heat	joule	J
Potenza	watt	W
Electric potential – Potential difference – Electric voltage – Electromagnetic force	volt	V
Electrical capacity	farad	F
Electrical resistance	ohm	Ω
Electrical conductance	siemens	S
Magnetic induction flux: Magnetic flux	weber	Wb
Luminous flux	lumen	lm
Illuminance	luxury	lx

Decimal Multiples and Submultiples (Exact Definition: SI Prefixes)

Some of the derived units of measurement have their own name. For example:

pressure 1 Pa = 1N/m²

work 1J = 1N·m

others do not have a proper name e.g.:

speed in m / s

viscosity in kg/m s

You have to be connected to post a comment.