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# joule

[jool, joul] /dʒul, dʒaʊl/
noun, Physics.
1.
the standard unit of work or energy in the International System of Units (SI), equal to the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force: equivalent to 10 7 ergs and one watt-second.
Abbreviation: J, j.
Also called newton-meter.
Origin of joule
1885-1890
First recorded in 1885-90; named after J. P. Joule

## Joule

[jool, joul] /dʒul, dʒaʊl/
noun
1.
James Prescott, 1818–89, English physicist.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for joule
Historical Examples
• We know this from Playfair, who mentioned it at joule's death.

Peter Kropotkin
• joule of Manchester was the first to verify Mayer's law quantitatively.

Stphane Leduc
• This is known as the mechanical equivalent of heat, or joule's equivalent.

Various
• Mr. joule's first investigations were in the field of magnetism.

• This is the law known as the conservation of energy which has been built up by Helmholtz, Thomson, joule and others.

Nehemiah Hawkins
• One watt is equivalent to one joule per second or 60 joules per minute.

Nehemiah Hawkins
• The meeting of Thomson and joule at Oxford in 1847 was fraught with important results to the theory of heat.

Andrew Gray
• M is here so chosen that Mdv is the heat expressed in units of work, so that μ does not involve joule's equivalent of heat.

Andrew Gray
• It has been demonstrated by joule and others that Gravitation can be converted into heat, light, and electricity.

William George Hooper
• Others will be found in the collected papers of joule, Kelvin and Maxwell.

British Dictionary definitions for joule

## joule

/dʒuːl/
noun
1.
the derived SI unit of work or energy; the work done when the point of application of a force of 1 newton is displaced through a distance of 1 metre in the direction of the force. 1 joule is equivalent to 1 watt-second, 107 ergs, 0.2390 calories, or 0.738 foot-pound J
Word Origin
C19: named after James Prescott Joule

## Joule

/dʒuːl/
noun
1.
James Prescott. 1818–89, English physicist, who evaluated the mechanical equivalent of heat and contributed to the study of heat and electricity
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for joule
n.

unit of electrical energy, 1882, coined in recognition of British physicist James P. Joule (1818-1889).

Online Etymology Dictionary, © 2010 Douglas Harper
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joule in Medicine

joule (jōōl, joul)
n.
Abbr. J

1. The International System unit of electrical, mechanical, and thermal energy.

2. A unit of electrical energy equal to the work done when a current of 1 ampere is passed through a resistance of 1 ohm for 1 second.

3. A unit of energy equal to the work done when a force of 1 newton acts through a distance of 1 meter.

The American Heritage® Stedman's Medical Dictionary
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joule in Science
 joule   (jl, joul)    The SI derived unit used to measure energy or work. One joule is equal to the energy used to accelerate a body with a mass of one kilogram using one newton of force over a distance of one meter. One joule is also equivalent to one watt-second.
 Joule, James Prescott 1818-1889.   British physicist who demonstrated that heat is a form of energy. His work established the law of conservation of energy, stating that energy is never destroyed but may be converted from one form into another. The joule unit of energy is named for him.
The American Heritage® Science Dictionary
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### Difficulty index for joule

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### Word Value for joule

12
16
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