Joule vs. Erg

Joulenoun

In the International System of Units, the derived unit of energy, work and heat; the work required to exert a force of one newton for a distance of one metre. Also equal to the energy of one watt of power for a duration of one second. Symbol: J

Joulenoun

A unit of work which is equal to 107 ergs (the unit of work in the C. G. S. system of units), and is equivalent to one watt-second, the energy expended in one second by an electric current of one ampere in a resistance of one ohm; also called the absolute joule. It is abbreviated J or j. The international joule is slightly larger, being 1.000167 times the absolute joule. The absolute joule is approximately equal to 0.737562 foot pounds, 0.239006 gram-calories (small calories), and 3.72506 x 10-7 horsepower-hours, and 0.000948451 B.t.u.

Joulenoun

a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second

Joulenoun

English physicist who established the mechanical theory of heat and discovered the first law of thermodynamics (1818-1889)

Joule

The joule ( jowl, jool; symbol: J) is a derived unit of energy in the International System of Units. It is equal to the energy transferred to (or work done on) an object when a force of one newton acts on that object in the direction of the force's motion through a distance of one metre (1 newton-metre or N⋅m).

Ergnoun

The unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10−7 joules.

Ergnoun

(geomorphology) A large desert region of sand dunes with little or no vegetation, especially in the Sahara.

Ergnoun

An ergometer.

Ergverb

To use an ergometer.

Ergnoun

The unit of work or energy in the C. G. S. system, being the amount of work done by a dyne working through a distance of one centimeter; the amount of energy expended in moving a body one centimeter against a force of one dyne (981 dynes exert the same force as a one gram mass in the earth's gravitational field). One foot pound is equal to 13,560,000 ergs. The absolute Joule is equivalent to 107 ergs, which are equivalent to 0.2389 gram-calories at 15° C. See also mechanical equivalent of heat under equivalent.

Ergnoun

a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter

Erg

The erg is a unit of energy equal to 10−7 joules (100 nJ). It originated in the centimetre–gram–second (CGS) system of units.