The Principle Of Equivalence
The t wo versions of the principle of equivalence are logically
dependent. Weak equivalence, verifide in experiments, of the inert and heavy masses, allows the development of its strong version, in which a gravitational field is equivalent to a local reference frame in acceleration. This local acceleration, within sight of the effects of relativity restricted, induced a contraction and local expansion of space and time, which arrives at the obvious conclusion that a field of gravitation must be equivalent to a curved space time. The corresponding equation of field, in the case of spherical symmetry, is proven like being able to have only static solutions, result of a theorem. However, by considering the physical measurement of time, by an optical system of resonator, it appears clearly that dilation obtained depends on time. Indeed, the trajectory of the photons in the equivalent reference frame linear, but is not described a curve. And that thus the intervals to which those course the distance from the resonator will depend them-even on the time, which is here that of the initation of the mesure.So, from a certain point of view, nonthe linearity (thus temporal) of the dilation of time describes in this experiment of measurement, introduced a quantum concept, in the sense that the measuring seems itself influences the result. Here, it is not only the apparatus measuring in itself, but all the process, because the duration of measurement also has an influence on the result, for the same measuring instrument. Thus one should not considered only the instrument itself, but even the object to be measured. what indicates that in this case there is an influence of the object to be measured on the measuring instrument