JP,

Thank you so much for your time and patience.

The dilemma stated more exactly:

Think of this light path as the arm of the MMX that’s in the direction of motion. The proper length of this light path and the length of this light path contracted by Lorentz contraction are not equal.

Light traverses these unequal lengths in an equal amount of time.

Above, the constant speed of light and Lorentz contraction obviously conflict. AT LEAST ONE OF THE TWO IS INVALID!

Albert Einstein (1879–1955). Relativity: The Special and General Theory. 1920.

XIV. The Heuristic Value of the Theory of Relativity

http://www.bartleby.com/173/14.htmlQuote from Einstein:

“OUR train of thought in the foregoing pages can be epitomised in the following manner. Experience has led to the conviction that, on the one hand, the principle of relativity holds true, and that on the other hand

**the velocity of transmission of light in vacuo has to be considered equal to a constant c.** By uniting these two postulates we obtained the law of transformation for the rectangular co-ordinates x, y, z and the time t of the events which constitute the processes of nature. In this connection we did not obtain the Galilei transformation, but, differing from classical mechanics, the Lorentz transformation.

The law of transmission of light, the acceptance of which is justified by our actual knowledge, played an important part in this process of thought. Once in possession of the Lorentz transformation, however, we can combine this with the principle of relativity, and sum up the theory thus:

Every general law of nature must be so constituted that it is transformed into a law of exactly the same form when, instead of the space-time variables x, y, z, t of the original co-ordinate system K, we introduce new space-time variables x', y', z', t' of a co-ordinate system K'. In this connection the relation between the ordinary and the accented magnitudes is given by the Lorentz transformation. Or, in brief:

**General laws of nature are co-variant with respect to Lorentz transformations.** This is a definite mathematical condition that the theory of relativity demands of a natural law, and in virtue of this, the theory becomes a valuable heuristic aid in the search for general laws of nature.

** If a general law of nature were to be found which did not satisfy this condition, then at least one of the two fundamental assumptions of the theory would have been disproved.”**Someone at Cambridge should probably look into this.

The world of physics will change starting NOW.

Butchmurray

Thorntone E. Murray