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Topic: PRESSION DE RADIATION ET VITESSE DES PHOTONS
Replies: 4   Last Post: Jul 20, 2013 3:06 AM

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 Pentcho Valev Posts: 6,212 Registered: 12/13/04
Re: PRESSION DE RADIATION ET VITESSE DES PHOTONS
Posted: Jul 17, 2013 9:09 AM

Bien que la transformation de Lorentz dise que la vitesse de la lumière par rapport à l'observateur ne dépend pas de la vitesse de l'observateur, Poincaré croit que "the true velocity of light in a moving frame was not a constant but was given by the Galilean law of addition of velocities":

http://www.persee.fr/web/revues/home/prescript/article/rhs_0151-4105_2002_num_55_1_2143
Les écrits épistémologiques de Poincaré, obstacles à la diffusion de la relativité?, Vincent Borella, p. 74: "Pour Einstein le postulat de la constance de la vitesse de la lumière par rapport à n'importe quel référentiel dans lequel elle est mesurée (ce qui est une expression du principe de relativité) est suffisant, alors qu'en fait, pour Poincaré, la vitesse de la lumière ne peut être constante que relativement au milieu dans lequel elle se propage, à savoir l'éther supposé immobile."

http://www.jstor.org/stable/3653092
The Mystery of the Einstein-Poincaré Connection, Olivier Darrigol: "It is clear from the context that Poincaré meant here to apply the postulate [of constancy of the speed of light] only in an ether-bound frame, in which case he could indeed state that it had been "accepted by everybody." In 1900 and in later writings he defined the apparent time of a moving observer in such a way that the velocity of light measured by this observer would be the same as if he were at rest (with respect to the ether). This does not mean, however, that he meant the postulate to apply in any inertial frame. From his point of view, the true velocity of light in a moving frame was not a constant but was given by the Galilean law of addition of velocities."

Comment peut-on expliquer le paradoxe? Poincaré ne comprend pas les équations de Lorentz, Albert le Plagiaire les comprend? Personne en France n'est intéressé?

Pentcho Valev

Date Subject Author
7/17/13 Pentcho Valev
7/17/13 Pentcho Valev
7/17/13 Pentcho Valev
7/18/13 Pentcho Valev
7/20/13 Pentcho Valev