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Mar 22, 2024 · Michelson-Morley experiment, an attempt to detect the velocity of Earth with respect to the hypothetical luminiferous ether, a medium in space proposed to carry light waves. First performed in Germany in 1880–81 by the physicist A.A. Michelson, the test was later refined in 1887 by Michelson and Edward W. Morley in the United States.
- The Editors of Encyclopaedia Britannica
The Michelson–Morley experiment was an attempt to measure the motion of the Earth relative to the luminiferous aether, a supposed medium permeating space that was thought to be the carrier of light waves.
- Description and Result
- Peer Reviews and Repetitions
- Influence of The MIMO Experiment on Relativity
- How Einstein Made The Earth Move
- Quotes
- See Also
Material from a York University course by Prof. Byron E. Wall provides a good summary of the Michelson-Morley experiment and its result. Below are slides that tell the story. Interested readers should feel free to go through the entire slide deck. Course Description (Archive) Full Slideshow (.ppt Archive) Note: Aether Drag Hypothesis was later reje...
Since 1887 the Michelson-Morley experiment has been repeated and verified on many occasions, with several different methodologies. The Michelson-Morley Wikipedia article (Archive) maintains a list of subsequent experiments. A 2009 repetition of the experiment is described below:
In a lecture titled How I Created the Theory of Relativity (Archive) Albert Einstein points this experiment out as a basis on developing Special Relativity: “ I was familiar with the strange results of Michelson’s experiment while I was still a student pondering these problems, and instinctively realized that, if we accepted his result as a fact, i...
Video: How Einstein Made the Earth Move By Jeran Campanella and Robert Sungenis Description: "This video is a reading of a PDF written by Robert Sungenis in 2016 called "Albert Einstein: The Earth Mover- How Einstein Made The Earth Move (When All The Experiments Showed It Didn't Move)" This video will challenge you to decide which belief is pseudos...
Below are miscellaneous quotes from various physicists and authors on the topic of the Michelson-Morley Experiment. “ If you haven't given much thought to the implications of twentieth-century science, you may be chagrined...to realize that because of the concept of relative motion, no one can prove that the Earth moves.” —Kitty Ferguson, Measuring...
Related Topics 1. 1.1. Aether 1.2. Vertical Michelson-Morley Experiments Flat Earth Topics on Rotation and Revolution 1. 1.1. Michelson-Morley Experiment- Light velocity experiment which suggests a lack of Earth's motion around the Sun 1.2. Sagnac Experiment- Experiments which show that light's velocity is indeed affected by detector motion 1.3. Ai...
May 9, 2020 · The Michelson-Morley experiment was performed by American scientists Albert Michelson and Edward Morley between April and July 1887. The purpose of this experiment is to prove the existence of ether. This hypothetical medium permeating space was thought to be the carrier of light waves.
Michelson-Morley collected 6 hours of data, with 36 turns of the interferometer (and still found a slight positive result). Dayton Miller had over 200,000 readings, from 12,000 turns of the interferometer.
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- If you have a fiber-optics cable running the circumference of the Earth at the equator, would a sign...Depends on who's observing. Suppose you're on the equator and sends a signal travelling both directions. Since you sent the signal simultaneously a...
- Did the Michelson-Morley experiment fail because it was unable to detect the effect of a luminiferou...Failed for both those reasons. 1. If there was a universal frame of reference (ie. ether), then their experiment would have detected a change in sp...
- If the speed of light speed up when travel in the same directions of the ether and slow down when it...Let's say that in ether light would move at c. Also, consider Earth moving at a velocity v relative to the ether, and that, at some day, the ray th...
- How is it possible to build it so precise that the outward mirrors have exactly the same distance fr...You build in a mechanism that lets you make very small adjustments to the length, and you "tune" it before you start the experiment. It was very ch...
- I have some questions about this. First off, the Michelson-Morley experiment ran in 1887. It did fin...Well, in those days I think the question was about "is there an ether that carries light waves or does light travel through space, which is a void:...
- As we know light would travel at different speeds at vacuum than let's say in glass. So, is this ent...I think the test was done in country-side room with mirrors in air. You are right. M-M exp assumed either could be detected in air. That could have...
- The absence of ether wind does not imply the absence of ether.I think there was a suggestion that the Ether might 'stick' to the Earth as it moves and this is why we dont detect the wind. The wind moves around...
- I still don't quite understand how the ether-affected ray travels longer/shorter time compared to th...Let's use an absurd example. You're in a zeppelin, travelling with an airspeed of 50 kph with a 49 kph wind at your back. So your groundspeed is 99...
- Shouldn't both light waves be affected by the movement of the aether? The light source parallel to t...Yes, they will both be affected, but the effect is not the the same in the parallel direction as it is in the perpendicular direction.
- When the light ray goes up, it speeds up due to the "ether"... and when it returns, it slows down. S...Do the math - let vy be your speed, and ve be the ether speed, both with respect to the ground. If distance s=vt, then t=s/v. So going out, _tg = s...
Some time later, the experiment was redesigned so that an aether wind caused by the earth’s daily rotation could be detected. Again, nothing was seen. Finally, Michelson wondered if the aether was somehow getting stuck to the earth, like the air in a below-decks cabin on a ship, so he redid the experiment on top of a high mountain in California.
Dec 5, 2015 · In 1887, Michelson and Morley set up an experiment to prove that an ether existed and to understand its motion relative to the Earth. The purpose of the experiment was to study the speed of light in different directions. This would allow Michelson and Morley to measure the speed of the ether relative to the Earth, therefore proving its existence.
