EINSTEINIANA'S LAST WORD ABOUT THE SPEED OF LIGHT

http://math.ucr.edu/home/baez/physic..._of_light.html
Updated 2014 by Don Koks. Original by Steve Carlip (1997) and Philip Gibbs 1996: "In 1879 it was thought that light must propagate through a medium in space, the ether, just as sound propagates through the air and other substances. The two scientists Michelson and Morley set up an experiment to attempt to detect the ether, by observing relative changes in the speed of light as Earth changed its direction of travel relative to the sun during the year. To their surprise, they failed to detect any change in the speed of light."

Don't lie, Don Koks, Steve Carlip and Philip Gibbs. Michelson and Morley actually demonstrated variation of the speed of light with the speed of the light source:

https://www.physics.umn.edu/classes/...slides-SR1.pdf
University of Minnesota: "The nail in the coffin of the myth [of the Michelson-Morley experiment]: Simple explanation of the result of Michelson and Morley is to assume that the velocity of light does depend on the velocity of the source. But that is the exact opposite of the light postulate!"

Pentcho Valev

http://math.ucr.edu/home/baez/physic..._of_light.html
Updated 2014 by Don Koks. Original by Steve Carlip (1997) and Philip Gibbs 1996: "If an observer is sitting up at the ceiling of this room and another is sitting on the floor, and they each have their own identical factory-set clocks and rulers, the ceiling observer measuring light in his vicinity will measure c, and so will the floor observer. But if I now ask these observers to set their clocks and rulers up so that they agree with me on distances and simultaneity - which can be done, although it's not an obvious thing - then things change. I collate their measurements and find that in this "global" uniformly accelerated frame, ceiling light travels faster than floor light... (...) Einstein talked about the speed of light changing in his new theory. In his 1920 book "Relativity: the special and general theory" he wrote: "... according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity [...] cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity [Einstein means speed here] of propagation of light varies with position." This difference in speeds is precisely that referred to above by ceiling and floor observers."

This Don Koks is a subtler practitioner of doublethink than Steve Carlip. Here is the original (Carlip's) text:

Steve Carlip: "Einstein went on to discover a more general theory of relativity which explained gravity in terms of curved spacetime, and he talked about the speed of light changing in this new theory. In the 1920 book "Relativity: the special and general theory" he wrote: "...according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity [...] cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity of propagation of light varies with position." Since Einstein talks of velocity (a vector quantity: speed with direction) rather than speed alone, it is not clear that he meant the speed will change, but the reference to special relativity suggests that he did mean so. This interpretation is perfectly valid and makes good physical sense, but a more modern interpretation is that the speed of light is constant in general relativity. (...) Finally, we come to the conclusion that the speed of light is not only observed to be constant; in the light of well tested theories of physics, it does not even make any sense to say that it varies."

Both Don Koks and Steve Carlip describe the speed of light in a gravitational field as constant and variable at the same time, but Koks' doublethink is perfect while there is an Achilles heel in Carip's cheating - he admits that the variable-speed-of-light interpretation "is perfectly valid and makes good physical sense".

http://ebooks.adelaide.edu.au/o/orwe...hapter2.9.html
"Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them. The Party intellectual knows in which direction his memories must be altered; he therefore knows that he is playing tricks with reality; but by the exercise of doublethink he also satisfies himself that reality is not violated. The process has to be conscious, or it would not be carried out with sufficient precision, but it also has to be unconscious, or it would bring with it a feeling of falsity and hence of guilt. Doublethink lies at the very heart of Ingsoc, since the essential act of the Party is to use conscious deception while retaining the firmness of purpose that goes with complete honesty. To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then, when it becomes necessary again, to draw it back from oblivion for just so long as it is needed, to deny the existence of objective reality and all the while to take account of the reality which one denies - all this is indispensably necessary. (...) It need hardly be said that the subtlest practitioners of doublethink are those who invented doublethink and know that it is a vast system of mental cheating. In our society, those who have the best knowledge of what is happening are also those who are furthest from seeing the world as it is. In general, the greater the understanding, the greater the delusion ; the more intelligent, the less sane.."

Pentcho Valev