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joule

File:Definición_del_Joule.svg · Wikimedia Commons · See Wikimedia Commons

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joule

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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

~9 min read

Encyclopedic overview

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

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).

== 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."

Excerpted from Wikipedia’s “joule” article, available under the CC BY-SA 4.0 licence.

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