Abstract
This article is devoted to the key concept of modern electrodynamics—the invariance of the speed of light. The general principle of relativity is considered in detail. Some critical remarks to the relativistic invariance and to the Lorentz transformations are presented. The general invariance of Maxwell equations is discussed. Different theoretical expectations for possible results of Michelson-Morley experiment and some physical consequences are considered. Some critical remarks to the notion of the light speed and its constancy are given. The relativistic law for velocity addition, including strangeness of a noncollinear addition and a superluminal motion, is discussed. Critical analysis of two works which proof the need for existence of an invariant velocity is consequentially made.
Highlights
It is known that one of the key moments of the special relativity theory (SRT) is the question of the invariance of light speed and the physical sense of such invariance
In dealing with the question of the invariance of light speed, one cannot bypass the discussion of the concept of relativity itself, which even entered the name of the theory of SRT
The notion of relativity is brought to the limit in the SRT and has lost its original physical meaning: a system with several objects is singled out, and the rest of the real Universe is removed from consideration
Summary
It is known that one of the key moments of the special relativity theory (SRT) is the question of the invariance of light speed and the physical sense of such invariance. Imagine that someone had the false idea that, because of the Earth’s rotation around its axis, a constant wind of about 400 m/s along the parallels should be observed Beginning to measure it with weather vanes with turntables, we found out that the wind constantly changes both in direction and in magnitude in huge limits, depending on time and place. The main objectives of this work are as follows: -to give a number of theoretical remarks concerning the physical meaning of relativistic invariance; -to analyze some theoretical ideas about the Michelson-Morley experiment; -to critically analyze the proof of the existence of an invariant velocity
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