Year: 2004

**An Explanation of Inertia outside Relativity**

An electric charge *Q* of mass *m*, in the form of a spherical shell of radius *a*, moving at time *t* with velocity **v** and acceleration *d***v**/*d*t, generates an electro-dynamic field **X** proportional to the acceleration. The field **X** acts on the self-same charge *Q* to produce an inertial force *Q***X** = -*m*(*d*v/*d*t), in accordance with Newton’s 2^{nd} and 3^{rd} laws of motion, where *m* is a constant. This explains the origin of inertia as electrical and internal to a body, contrary to general relativity. An expression deduced for the mass *m*, in terms of *Q *and radius *a*, is compared with the electrostatic energy *E* of the charge to obtain *E = ½ mc ^{2}*, in contrast to the mass-energy formula of special relativity,

*E = mc*, where

^{2}*c*the speed of light in a vacuum.

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