A Feasible Experiment Contrary to the 2^nd Postulate of SR

Abstract

Assuming the light as composed of longitudinal-extended elastic (and massive) particles emitted during an emission time T at speed c (= u ) (with u the escape speed from all the masses, toward the infinity), it is shown that c is invariant (under the Newtonian mechanics laws), for an Observer fixed to the initial emission point E p (the point where the emission starts), in spite of any motion of the source (of light) with respect to E p . On the contrary, an Observer, in motion from E p during the emission, will state (indirectly) a Galilean variation of c which can be proved and evaluated by an appropriate feasible experiment described here.