joule

Also known as J

The joule ( , or ; symbol: J) is the unit of energy in the International System of Units (SI). In terms of SI base units, one joule corresponds to one kilogram-metre squared per second squared One joule is equal to the amount of work done when a force of one newton displaces a body through a distance of one metre in the direction of that force. It is also the energy dissipated as heat when an electric current of one ampere passes through a resistance of one ohm for one second. It is named after the English physicist James Prescott Joule (1818–1889).

AI overview

A joule is the standard unit used worldwide to measure energy, whether that energy comes from work, heat, or electricity. It matters because it provides a common language for scientists and engineers to precisely quantify and compare different forms of energy.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.symbol: J
Unit.name: joule
Unit.image: Definición del Joule.svg
Unit.imageclass: skin-invert-image
Unit.caption: Intuitive representation of the joule as the work of a motive force
Unit.standard: SI
Unit.quantity: energy
Unit.namedafter: James Prescott Joule
Unit.units1: SI base units
Unit.inunits1: kg⋅m2⋅s−2
Unit.units2: CGS units
Unit.inunits2: erg
Unit.units3: watt-seconds
Unit.inunits3:  W⋅s
Unit.units4: kilowatt-hours
Unit.inunits4: ≈
Unit.units5: kilocalories (thermochemical)
Unit.units6: BTUs

via Wikipedia infobox

Wikidata facts

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conversion to SI unit: 1
unit symbol: J
Wikidata SPARQL query equivalent: wd:Q25269 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
Commons category: Joule (unit)

Sources (2)

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~9 min read

Article

9 sections

Contents

Definition
History
Practical examples
Multiples
Conversions
Newton-metre and torque
Watt-second
References
External links

== Definition == According to the International Bureau of Weights and Measures the joule is defined as "the work done when the point of application of 1 MKS unit of force [newton] moves a distance of 1 metre in the direction of the force."