erg

Dictionary: erg (ûrg) pronunciation

n.
The centimeter-gram-second unit of energy or work equal to the work done by a force of one dyne acting over a distance of one centimeter.

[From Greek ergon, work.]

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Wordsmith Words: erg

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(urg)

noun
The unit of work or energy in the centimeter-gram-second system.

Etymology
From Greek ergon (work). Ultimately from Indo-European root werg- (to do) which gave us ergonomic, work, energy, metallurgy, surgery, wright, and orgy

erg (erg) noun
A large area of land covered with shifting sand. Also known as a sand sea.
[From Arabic.]

Usage
"Every available erg of waste heat from operating machinery will be used to warm living quarters. In all, it may save 150,000 gallons of fuel every year." — Robert Lee Hotz; Last Journey To The Last Place On Earth: At the South Pole, Nothing Can Grow Except the Spirit; The Los Angeles Times; Jun 8, 2001.

"A day later we reached Tumbain, a flat table mountain from whose top you look out on the infinity of the erg. The solitude of the place was awesome." — John Eisenhammer; Led by Wise Men; The Independent (London, UK); Dec 21, 1996.

Computer Desktop Encyclopedia: erg

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A unit of energy in the CGS system. It is equal to .0000001 joule in the MKS system. See CGS system.

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Measures and Units: erg

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[Etymology: Gk: ‘work’] energy, work, quantity of heat Metric-c.g.s. Identically dyne·centimetre, i.e. work done by 1 dyne acting over 1 centimetre, = 10^-7 J (= cm²·g·s^-2 in c.g.s. base terms). Erg can be prefixed, as in cerg = centierg.

Columbia Encyclopedia: erg

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erg (ûrg), unit of work or energy in the cgs system of units, which is based on the metric system; it is the work done or energy expended by a force of 1 dyne acting through a distance of 1 centimeter. In terms of the joule, the unit of work or energy in the mks system, 1 erg equals 0.0000001 joule.

Unit Conversions: ergs/sec

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To convert from ergs/sec to:

dyne-cm/sec, multiply by 1.0.
Btu, multiply by 9.48E-11.
dyne-centimeters, multiply by 1.0.
foot-pounds, multiply by 7.367E-08.
gram-calories, multiply by 2.389E-08.
grams-cms, multiply by .00102.
horsepower-hrs, multiply by 3.725E-14.
joules, multiply by .0000001.
kg-calories, multiply by 2.389E-11.
kg-meters, multiply by 1.02E-08.
kilowatt-hrs, multiply by 2.778E-14.
watt-hrs, multiply by 2.778E-11.
Btu/min, multiply by 5.688E-06.
ft-lbs/min, multiply by 4.427E-06.
ft-lbs/sec, multiply by 7.3756E-08.
horsepower, multiply by 1.341E-10.
kg-calories/min, multiply by 1.433E-09.
kilowatts, multiply by 1E-10.

Related measurements:
ergs/sec

Wikipedia: Erg

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For other uses, see Erg (disambiguation).

An erg is the unit of energy and mechanical work in the centimetre-gram-second (CGS) system of units, symbol "erg". Its name is derived from the Greek ergon meaning work ^[1].

An erg is the amount of work done by a force of one dyne exerted for a distance of one centimetre. In the CGS base units, it is equal to one gram centimetre-squared per second squared (g·cm²/s²). It is thus equal to 1 × 10⁻⁷ joules or 100 nanojoules (nJ) in SI units.

1 erg = 10⁻⁷ joule

1 erg = 624.15 GeV = 6.2415 × 10¹¹ eV

1 erg = 1 dyn cm.

Measuring devices

Any device used to measure energy in units of erg is called an Ergometer. Such devices are commonly found on exercise equipment. Some portable types can be mounted on bicycles to measure the rider's energy expenditure. One experimental device called the Power Pacer was used in the cross-country Race Across America ^[2] by a cycling team (see Team Strawberry) to monitor each rider's power output and energy expenditure. Another, the SRM gained some popularity when it was used by world famous Tour De France winner Greg LeMond. Later spin-offs were the more affordable Power Tap (1998, Tune Corp., purchased by Graber Products in late 2000) and Polar S-710 (2001). ^[3]

References

^ Oxford English Dictionary
^ HPV's Across America: RAAM Tests More Than Technology |http://www.adventurecorps.com/when/raam/1989raam1.html
^ Training Smart| http://www.trainingsmartonline.com/power_cycling_training.php

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		Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more
		Wordsmith Words. © 2009 Wordsmith.org. All rights reserved. Read more
		Computer Desktop Encyclopedia. THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher. © 1981-2009 Computer Language Company Inc. All rights reserved. Read more
		Measures and Units. A Dictionary of Weights, Measures, and Units. Copyright © Donald Fenna 2002, 2004. All rights reserved. Read more
		Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/. Read more
		Unit Conversions. © 1999-2009 by Answers Corporation. All rights reserved. Read more
		Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Erg". Read more

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