Erg

An erg is a unit of measurement or energy or work that is the same as 10-7 joules. It formed part of the centimetre-gram-second system of units (CGS system of measurement which is no longer used). 

An erg is about the amount of work done (or energy consumed) by one common housefly performing a "press-up", the leg-bending dip that brings its mouth to the surface on which it stands and back up. Filippenko, Alex, Understanding the Universe (of The Great Courses, on DVD), Lecture 44, time 24:30, The Teaching Company, Chantilly, VA, USA, 2007

 References 

Category:Units of energy