‘Real acceleration’ occurs whenever there is an increase in momentum, which results in an increase in the density of an energy system, which then results in an increase in velocity.

‘Relative acceleration’ occurs when there is no increase in momentum (no transfer of energy takes place) and when the increase in density occurs only because an object is descending into a denser ‘space’ in the energy field, resulting in a relative size contraction which creates increased density and a corresponding relativistic increase in the measure of how ‘energetic’ that energy system has become. The acceleration that occurs and the relative increase in velocity are the results of momentum remaining constant as the spatial gradient of the energy field changes, such that as the clock slows down a relative acceleration occurs.

An increase in energetic density always results in acceleration and an increase in velocity and this remains true whether the increase in density is relative, and caused by changes in the ‘space and time’ created by the energy field, or whether the change is density is created by an exchange of energy imparted to an accelerating craft in space. The result will either be ‘real acceleration’ of the object ‘gaining momentum’ out in space or ‘relative acceleration’ experienced by the object ‘conserving momentum’ while falling in a gravitational field.