Observations/Interferometry

Interferometry (under construction)

Interferometry makes use of the principle of superposition to combine waves in a way that will cause the result of their combination to have some meaningful property that is diagnostic of the original state of the waves. This works because when two waves with the same frequency combine, the resulting intensity pattern is determined by the phase difference between the two waves—waves that are in phase will undergo constructive interference while waves that are out of phase will undergo destructive interference. Waves which are not completely in phase nor completely out of phase will have an intermediate intensity pattern, which can be used to determine their relative phase difference. Most interferometers use light or some other form of electromagnetic wave.

Michelson–Morley experiment

1887, tests of earths motion around the sun, to deduce that motion through the aether

Michelson–Gale–Pearson experiment

1925

Dufour and Prunier

1942, performed supplement Sagnac effect experiments. They reproduced the original experiment, the only difference is they doubled the diameter of the spinning apparatus.

This experiment showed complete evidence of the failure of relativity.

0.053 fringe for Æther

References

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