  A reanalisis of the effect of a moving frame of reference is done, showing
that the null result of the Michelson-Morley's experimente of 1887 on the
possibility of detecting the variation of the velocity of light with respect to
a moving observer, na observer at the Earth, was already implied in these
equations; thereforewith no need of new ad hoc hypotheses to explain it in the
classical framework. In fact, it will be shown that behind those equations is
hidden the fascinating phenomenon of the absolute motion.
