Results
M-M experiment: Rotate apparatus to search for direction which maximizes the time difference (largest fringe shift)
Result: THEY SAW NO DIFFERENCE!
What does this mean??
- They set an upper limit of around 1 km/sec for the velocity of the ether (the medium for light waves) with respect to the Earth.
- Michelson called this a NEGATIVE result, not a NULL result.
- Can you think of a reason why he used these words?