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1 vote
1 answer
104 views

Understanding the math of the Michelson-Morley experiment

I'm having some conceptual misunderstandings of the Michelson-Morley experiment. The time for the beam going perpendicular ($t_{across}$) of the aether wind I am getting: $$(ct)^{2}=d^{2}+(vt)^{2}\\ (...
Qubit's user avatar
  • 431
1 vote
3 answers
139 views

What exactly is weird about waves propagating without a medium? What does it violate? [closed]

I can not seem to grasp, why exactly does light travelling through space without the need of any medium was baffling for the scientists of 1800's.
Sumir's user avatar
  • 31
4 votes
4 answers
632 views

Speed of light in Michelson-Morley experiment

The (failed) goal of the Michelson-Morley experiment was to detect the motion of the Earth with respect to the hypothetical ether. As far as I understand (e.g. from the exposition in Feynman’s ...
MKO's user avatar
  • 2,226
-4 votes
1 answer
109 views

What would happen if the aether did exist and there was no such thing as relativity? [closed]

I'm curious as to the purpose of relativity and why the universe would function this way as opposed to a universe with an aether. So what would be different if we had an aether?
Shannon T's user avatar
  • 361
-4 votes
1 answer
86 views

Help with understanding Einstein's thought experiment of the train [closed]

My understanding is that Einstein claimed that the aether model of light is inconsistent with the principle of relativity (that you cannot tell the difference between constant velocity and being ...
DM Miller's user avatar
0 votes
2 answers
170 views

Why does light (supposedly) move diagonally in Michelson-Morley Experiment? [closed]

(Im specifically referring to this video at 12:30) In Michelson-Morley experiment, one light beam goes perpendicular to the velocity of earth, and other goes parallel to the velocity of earth. Im ...
Rohit Shekhawat's user avatar
1 vote
2 answers
294 views

Can transverse waves be both mechanical and non-mechanical?

Transverse waves need a medium for particles to propagate perpendicular to the wave right? Then how can transverse waves be non mechanical which do not require any medium?
Phy14's user avatar
  • 69
1 vote
1 answer
180 views

What impetus would Einstein have had to believe the speed of light, of all things, should remain constant for all reference frames? [duplicate]

If I was in the 1900's, and had to choose between something as "obvious" as time and space behaving "normally" The speed of light staying constant in all reference frames I ...
chausies's user avatar
  • 1,090
1 vote
0 answers
76 views

Logistics of Recreating the Michaelson-Morley Experiment

I want to recreate the Michaelson-Morley Experiment and am wondering how technically challenging it would be. I'm not looking for it to be super precise, just good enough to provide reasonable ...
Aryan Prasad's user avatar
-1 votes
1 answer
596 views

What does light travel through or why it is independent of a medium? [duplicate]

According to my research and understanding I cant get over the fact that light needs no media to travel, or is it scientifically or mathematically proven?
Ar1njay's user avatar
0 votes
1 answer
92 views

Where/ how does light propagate? [duplicate]

The Michelson–Morley experiment proved there is no aether, but we (used to) know that a wave needs a medium in order to propagate. Einstein showed the invariance of speed but assigned no properties to ...
user157860's user avatar
0 votes
3 answers
343 views

Explanation for invariance of $c$ / Lorentz transformations? [closed]

First of all, I want to make it clear that I'm not proposing here that I have "discovered" something(I'm just trying to save myself here from accusations about being a relativity denier or ...
Michael Mitsopoulos's user avatar
0 votes
1 answer
98 views

Doesn't Lorentz transformation disprove aether?

I am struggling to understand the reason behind why lorentz still believe in the aether theory after developing his transformation. The aether frame is the frame by which all velocities should be ...
jensen paull's user avatar
  • 6,636
4 votes
1 answer
251 views

Why does the universality of the speed of light prove there is no ether?

So I definitely don’t think there is an ether for starters. I am reading electrodynamics by Griffith and he states that Einstein’s second postulate which says “The speed of light in vacuum is the same ...
JosephSanders's user avatar
-7 votes
2 answers
261 views

Is Michelson-Morley experiment useless? [closed]

Do you agree that any experiment with two-way there-and-back journeys will never show any discrepancy? Aren't all differences going to be counterbalanced, levelled in the journey back?.
user157860's user avatar

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