erg ûrg [key], 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.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Physics