Abstract

Classical physics can predict relativistic effects, such as mass increase, length contraction and time dilation without recourse to particular hypotheses like the existence of aether. The compo-nents of ?elementary' particles are bound by gauge bosons, i.e., quanta of inner forces. The average energy of these quanta and particle velocity are correlated according to the classic Doppler effect. The relativistic Doppler effect is not taken into account because Einstein's principle of relativity is untenable.  Based on the law of energy equi-partition, all oscillators within an ?elementary' particle, i.e., all quanta and matter-like components, have the same average energy. As a result, the relativistic energy and mass are proportional to the Lorentz factor.  In turn, this mass increase leads to length contraction and time dilation. The velocity of light in vacuum obeys the classic rule of velocity addition, but length contraction can hide this fact and therefore explains Michelson and Morley's null results. More recent measurements, which are not skewed by length contraction, prove light obeys the classic theorem of velocity addition.