Michelson-Morley Experiment

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

Michelson and Morley's experiment was devised to observe the influence of a hypothetical "ether" (that supposedly filled all space) on the speed of light, depending on the direction of the Earth's motion. A beam of light is shot toward a beam splitter that sends the two resultant beams to different mirrors. The signals are then reflected back and recombine at a detector. In the case of a stationary interferometer, both beams arrive at the same time. For a moving interferometer, one beam travels a greater distance and the combination of the two yields the characteristic dark fringes of an interference pattern. The result of the experiment was contrary to what Michelson and Morley had expected, in that no effect due to the ether was found, at least to second order in . This result can be considered a foundation of Einstein's special theory of relativity, which proposes that the speed of light is constant in any reference frame.

Contributed by: Enrique Zeleny (October 2011)
Open content licensed under CC BY-NC-SA


Snapshots


Details

detailSectionParagraph


Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.
Send