Does the Michelson-Morley Experiment Truly Disprove Ether?

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Discussion Overview

The discussion centers around the implications of the Michelson-Morley experiment regarding the existence of ether, a concept historically proposed as a medium through which light travels. Participants explore the experiment's methodology, its intended purpose, and the interpretations of its results, including the ongoing relevance of ether theories in light of modern physics.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Historical

Main Points Raised

  • Some participants express confusion about why the Michelson-Morley experiment is widely accepted as disproving ether, questioning the logic behind the conclusions drawn from its results.
  • Others explain that the ether was thought to provide a preferred reference frame for light, which should have shown varying speeds based on Earth's motion through it, but the experiment found no such variation.
  • A participant suggests that the concept of an ether "wind" was a key aspect of the ether theory, which should have been measurable but was not, leading to questions about the validity of ether as a concept.
  • Some argue that the experiment did not conclusively disprove ether, citing the Lorentz Ether Theory (LET) as a framework that still supports ether's existence and remains unrefuted by the experiment.
  • There is a discussion about the simplicity and elegance of Special Relativity (SR) compared to ether theories, with some participants expressing a preference for SR while acknowledging the theoretical viability of LET.
  • One participant notes that the experiment's failure to detect ether does not equate to its non-existence, as the underlying reasons for believing in ether persisted until the advent of Einstein's theories.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the implications of the Michelson-Morley experiment regarding ether. There are multiple competing views, with some asserting that ether has not been disproven and others supporting the idea that the experiment significantly undermined ether theories.

Contextual Notes

There are unresolved questions about the interpretations of the experiment's results, the historical context of ether theories, and the implications of later developments in physics, particularly Einstein's contributions.

  • #31


Thanks Soothsayer - I wasn't aware of SVT, but it seems pretty relevant. My thought experiment goes like this: take a snapshot of the universe - a representation of three dimensions in two, to free up another dimension for visualization. Print the snapshot on a permeable surface, like a net. Stretch the net a foot or so over the bottom of a (hyperdimensional) swimming pool. Now open a drain in the bottom of the pool, so a vortex forms that intersects the net. Now restore our 2D snapshot back to three, so the "circle" where the vortex intersects the net is actually a sphere, with little rotating bits (subatomic particles) orbiting the center - the nucleus. Flotsam (like a floating leaf) circling the edges of an irrotational vortex (the kind you generally see in nature) has no spin of its own but only spins relative to the center of the vortex. If particles generally can be thought of as 3-dimensional slices of an n-dimensional vortex, I wonder if this local rotation around the edges of the vortex and relative to its center could be a strong analogy (at least) to the Higgs boson? As the local rotation has to do with fluid getting "sucked in" to the vortex - that is, imparting angular momentum to relatively stationary surrounding hyper dimensional fluid (superfluid?) - I wonder if this could correspond to the notion of the Higgs imparting mass to particles? I would be grateful if you (or anyone) can point out for me any inconsistency or errors in this thought experiment!
 

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