Overview
The 1887 Michelson and Morley experiment was a very innovative experiment with the goal of detecting the orbital (or rotational) velocity of the earth of 30 kilometers per second. They used a device, called an Interferometer, to measure the time difference (also referred to asdisplacement) between two perpendicular paths of light.
Michelson and Morley, as they state in their paper, were able to detect a velocity of 5 to 7.5km/s. Proponents of SRT suggest that this result is within the range of experimental error and that it should be interpreted as 0 km/s, thus agreeing with the predictions of SRT.
But, is this interpretation right?When analyzed using statiscially, the Michelson-Morley result does not support an experimental result of 0km/s with over 99.9% confidence. This means that there’s something else going on. We find that the problem is within their equations, which do not take into account the difference between length and wavlength, among other things. Once correct, we find their data actually detected an earth orbital velocity of 30 km/s.