Abstract
It is demonstrated analytically in an exact treatment that the varying part of the “caliber” C, defined originally by Edwin Jaynes in the context of a treatment of entropy production, is simply proportional to what Parker & Jeynes have previously defined as the (entropic) “exertion” X in the context of their general treatment of Quantitative Geometrical Thermodynamics. Exertion is the entropic isomorph of the energetic Action, where action is quantised by Planck’s constant and entropy is quantised by Boltzmann’s constant kB as usual. The coefficient of proportionality is the entropic mass mS, defined as mS = iKkB, where K can be considered as a scale factor for the entity being described (and i2 = −1 as usual): C = −X/mS.