Acoustic Michelson-Morley Experiment with an Ultrasonic Range Finder
| Scientific Paper | |
|---|---|
| Title | Acoustic Michelson-Morley Experiment with an Ultrasonic Range Finder |
| Read in full | Link to paper |
| Author(s) | Norbert Feist |
| Keywords | {{{keywords}}} |
| Published | 2010 |
| Journal | Proceedings of the NPA |
| Volume | 7 |
| No. of pages | 4 |
| Pages | 153-157 |
Read the full paper here
Abstract
An ultrasonic range finder was mounted on a horizontally rotatable rail at fixed distance, s, to a reflector on the top of a car. The change of the distance reading, s, served to determine the two-way velocity of sound as a function of [car] velocity and direction. Result: the out- and back velocity c2 was isotropic as in the optical case of the Michelson-Morley experiment. Within the experimental error it was found to vary as c2 = (c2 - v2) / c.