Abstract

Over the years many scientists have unsuccessfully proposed alternative theories to overcome the logical inconsistencies of Einstein's theory of special relativity. The present theory is based upon three fundamental postulates: (i) Motion-dependent time-unit, (ii) Invariant length-unit, and (iii) Principle of physical similarity. Light velocity is found to be 'motion-dependent' and the absolute frame is indentifiable as the frame in which light velocity from a stationary course attains the absolute maximum, say c_o. The invariant Compton wavelengths of all fundamental particles are defined and the postulated basic invariant 'length-unit', say dl, can be identified with the Compton wavelength of any fundamental particle, say electron. The absolute rest 'time-unit' is taken as dl/c_o. Applying this theory to mechanics, electromagnetism and optics, it is established that it overcomes all epistemological errors of Einstein's theory and circumvents the drawbacks of all other theories.