## Einstein postulates of theory of relativity

Explanation of the negative results of the Michelson-Morley experiment:

As the theoretical results of the M-M experiment did not match with the experimental results (Theoretically fringe shift result was not zero, it was about 0.4 but the experimentally it was 0). Even then the scientists of that time had conviction that ether exist and earth moves with respect to it. Thus there was lot of debate and discussion regarding this as why there were negative results (that is why the theory and experiment result did not match?).

Following are the reasons given by the scientists:

1.  Ether Drag Hypothesis: The then scientists assumed that ether exits and it is attached with the earth. Thus it will be dragged with the earth so the relative velocity of ether and earth will be zero. If this is taken then theory and experimental will get matched. But this hypothesis is discarded as there was no proof for this.

2. Lorentz-Fitzgerald Hypothesis: Lorentz told that the length of the arm (distance between the pale and the mirror M2) towards the transmitted side should be L(√1 – v2/c2) but not L. If this is taken then theory and experimental will get matched. But this hypothesis is discarded as there was no proof for this.

Einstein explanation of negative results of M-M experiment: Continue reading “Einstein postulates of theory of relativity”

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