Main Page | See live article | Alphabetical index An erg is the unit of energy in the centimetre-gram-second (CGS) system of units, symbol "erg". The erg is a quite small unit, equal to 1.0 · 10-7 jouless. Erg is also a common name for an Indoor_Rower, particularly those manufactured by the Concept2 company, taken from its purpose of measuring the amount of work done during training. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.