Difference between revisions of "SI - The International System of Units"

From Bioblast
Jump to: navigation, search
(Created page with "{{MitoPedia |abbr=SI |description="The SI is a consistent system of units for use in all aspects of life, including international trade, manufacturing, security, health and sa...")
(No difference)

Revision as of 06:35, 15 August 2019

Bioblasts - Richard Altmann and MiPArt by Odra Noel
MitoPedia         Terms and abbreviations         Concepts and methods         Oroboros O2k         MiP and biochemistry         Preprints and history



MitoPedia

SI - The International System of Units

Description

"The SI is a consistent system of units for use in all aspects of life, including international trade, manufacturing, security, health and safety, protection of the environment, and in the basic science that underpins all of these. The system of quantities underlying the SI and the equations relating them are based on the present description of nature and are familiar to all scientists, technologists and engineers.

The definition of the SI units is established in terms of a set of seven defining constants. The complete system of units can be derived from the fixed values of these defining constants, expressed in the units of the SI. These seven defining constants are the most fundamental feature of the definition of the entire system of units. These particular constants were chosen after having been identified as being the best choice, taking into account the previous definition of the SI, which was based on seven base units, and progress in science."

Abbreviation: SI

Reference: Bureau International des Poids et Mesures (2019) The International System of Units (SI). 9th edition:117-216 ISBN 978-92-822-2272-0. - »Open Access pdf«


MitoPedia concepts: Ergodynamics 






SI-units.png

Base quantities / SI base units

» time / [second]
» length / [meter]
» mass / [kilogram]
» electric current / [ampere]
» thermodynamic temperature / [kelvin]
» amount of substance / [mole]
» luminous intensity / [candela]

Fundamental relationships

» Avogadro constant
» Boltzmann constant
» Faraday constant
» elementary charge
» gas constant
» motive unit