Michelson-Morley experiment doubts

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    Doubts Experiment
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Discussion Overview

The discussion revolves around the Michelson-Morley experiment and the behavior of light in relation to a moving apparatus, particularly in the context of special relativity. Participants explore the implications of light's motion and how it is perceived from different frames of reference.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions the understanding of light's motion in relation to the movement of the apparatus, suggesting a lack of clarity on how light behaves in this context.
  • Another participant challenges the first by implying that if they have definitive knowledge about light's motion, they should share it, indicating skepticism about the certainty of such knowledge.
  • A third participant explains that a light beam aimed vertically in a moving frame will have a horizontal component in a stationary frame, suggesting that this is necessary for the beam to hit the mirror.
  • A later reply indicates that the initial poster has come to understand that the apparatus's movement causes the light to appear to move at an angle, acknowledging the earlier explanation.

Areas of Agreement / Disagreement

The discussion contains differing viewpoints on the understanding of light's motion in a moving apparatus, with some participants expressing uncertainty and others providing explanations. No consensus is reached on the fundamental understanding of the issue.

Contextual Notes

Participants express varying levels of understanding regarding the motion of light and the implications of the apparatus's movement, indicating potential limitations in their assumptions and definitions.

Highwaydude
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Hello, I am newly learning special relativity. I have this particular doubt>

Why is light moving along the hypoteneuse of the triangle while we are moving the apparatus?
(Its not like it has a horizontal component of velocity which is equal to the velocity of the apparatus).
 
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Why do you think you know how light is moving?

If you know, you need to let the rest of us know, because you have information that nobody else has.
 
Highwaydude, A light beam aimed vertically in the moving frame will be seen to have a horizontal component in the stationary frame. If if did not, it would fail to hit the mirror.
 
Sorry for replying late.. yes after a bit of thinking I've figured it out, like you said, since the apparatus is moving we are seeing it as if it moves along an angle. :)
 

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