LIGHT MATTERS

https://briankoberlein.com/2014/11/22/light-matters/
Light Matters, Brian Koberlein: "Yesterday I talked about time dilation due to both gravity and relative motion. The reason for both of these effects is the fact that light in a vacuum always has a constant speed. The first experimental evidence for the constancy of light was performed in 1887 by Michelson and Morley..."

In 1887 (prior to FitzGerald and Lorenz advancing the ad hoc length contraction hypothesis) the Michelson-Morley experiment unequivocally confirmed the variable speed of light predicted by Newton's emission theory of light and refuted the constant (independent of the speed of the source) speed of light predicted by the ether theory:

http://www.philoscience.unibe.ch/doc...S07/Norton.pdf
John Norton: "These efforts were long misled by an exaggeration of the importance of one experiment, the Michelson-Morley experiment, even though Einstein later had trouble recalling if he even knew of the experiment prior to his 1905 paper. This one experiment, in isolation, has little force. Its null result happened to be fully compatible with Newton's own emission theory of light. Located in the context of late 19th century electrodynamics when ether-based, wave theories of light predominated, however, it presented a serious problem that exercised the greatest theoretician of the day."

http://philsci-archive.pitt.edu/1743/2/Norton.pdf
John Norton: "In addition to his work as editor of the Einstein papers in finding source material, Stachel assembled the many small clues that reveal Einstein's serious consideration of an emission theory of light; and he gave us the crucial insight that Einstein regarded the Michelson-Morley experiment as evidence for the principle of relativity, whereas later writers almost universally use it as support for the light postulate of special relativity. Even today, this point needs emphasis. The Michelson-Morley experiment is fully compatible with an emission theory of light that CONTRADICTS THE LIGHT POSTULATE."

http://books.google.com/books?id=JokgnS1JtmMC
Relativity and Its Roots, Banesh Hoffmann, p.92: "There are various remarks to be made about this second principle. For instance, if it is so obvious, how could it turn out to be part of a revolution - especially when the first principle is also a natural one? Moreover, if light consists of particles, as Einstein had suggested in his paper submitted just thirteen weeks before this one, the second principle seems absurd: A stone thrown from a speeding train can do far more damage than one thrown from a train at rest; the speed of the particle is not independent of the motion of the object emitting it. And if we take light to consist of particles and assume that these particles obey Newton's laws, they will conform to Newtonian relativity and thus automatically account for the null result of the Michelson-Morley experiment without recourse to contracting lengths, local time, or Lorentz transformations. Yet, as we have seen, Einstein resisted the temptation to account for the null result in terms of particles of light and simple, familiar Newtonian ideas, and introduced as his second postulate something that was more or less obvious when thought of in terms of waves in an ether. If it was so obvious, though, why did he need to state it as a principle? Because, having taken from the idea of light waves in the ether the one aspect that he needed, he declared early in his paper, to quote his own words, that "the introduction of a 'luminiferous ether' will prove to be superfluous."

Pentcho Valev

Einsteinians know no limits - they continue to teach that the Michelson-Morley experiment confirmed constant speed of light and that this caused the development of the Lorentz transformations (the truth is that the experiment confirmed VARIABLE speed of light - the role of the Lorentz transformations was to camouflage this fact):

https://www.youtube.com/watch?v=ONExKeICk3A
Purdue PHYS 342 L12.4: Special Relativity-Introduction: The Lorentz-Einstein Transformation ( 0:51 ): "This experimental [the Michelson-Morley experiment is referred to] fact that the speed of light is constant caused the development of what are now referred to as the Lorentz-Einstein transformation equations."

Pentcho Valev