Michelson Morley Experiment - History of Special Relativity (Part 2)

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History of Special Relativity II - MICHELSON MORLEY EXPERIMENT
0:59 Ether/Light
4:25 Principle
6:32 Michelson Morley Set up & Calculations
26:25 Results / Conclusions

What is the michelson morley experiment?
In this Part 2 video on History of Special Theory of Relativity, I discuss the concept of Ether and The Michelson Morley Experiment.

Michelson Morley Experiment tried to establish the existence of ether by measuring the fringe shifts in two light beams moving in perpendicular directions as Earth moves with a certain velocity through space. Unfortunately this experiment failed to establish the existence of ether. Ether was a hypothetical medium in which it was assumed that electromagnetic waves propagated through.
I discuss in detail, the principle, construction, calculations involved and conclusion of this experiment. This experiment has a special importance in the history of Special relativity and the development of a new Physics as it rejected the existence of an absolute frame of reference.

𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬𓏬
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PLAYLIST ON Special Theory of Relativity
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I really enjoy that you add in the history and stories behind the experiments; it provides a better context. You're a fantastic teacher and I think you were born to do this. :-)

tookurjaerbs
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0:59 Ether/Light
4:25 Principle
6:32 Michelson Morley Set up & Calculations
26:25 Results / Conclusions

FortheLoveofPhysics
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Wonderful. This is the first time that I followed the Michelson-Morley experiment in great detail. Thank you. So elegant and so simple and yet so profound.

caltechharvard
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Thanks Sir it is very likely that the history is needed for every concepts but it's not taught in normal courses

harshrana
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Perfect explanation of the experiment. Thank you.There is a lot of weak and leak knowledged videos about Michelson-Morley exp but this one very good.

zagor
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Great experiments brought great discovery. So much respect for their brilliant thinking. I really think if you want to make progress in physics do more experiments. I wish we increase funding for these brilliant people so they can move us to a much better newer generation.

The explanation was outstanding. Detailed but very complete .

manaoharsam
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This is the best explanation that I have seen and it is a lot better than the explanation in books. Many thanks. शाबाश।

catherinegrimes
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Gazab padhate he yaar.
Mind blowing sir🙏🙏
Khatarnak style teaching.
OP Sir

sidd
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The theory of Special Relativity(SR), and the Michelson Morley Experiment, when combined, are a blast. The special Relativity theory proves that the idea of movement through an ether can not be excluded. Meanwhile, many people think that SR proves that there is no ether. It is absolutely hilarious. Light is in motion relative to the spatial ether of the absolute 4D structure of Space-Time, and it does so at the speed of light. But this particular magnitude of motion is of no uniqueness. Everything within this space-time 4D ether is also in motion exactly us much as are photons of light in motion. Thus in turn, the direction you travel within space-time is what it is that determines how fast you are moving across space, and how fast you are moving across time. Of course your choice of direction also determines for instance, how much of your spaceship extends across space, and how much of it extends across time, all due to rotation taking place as you have changed your direction of travel. Hence as you pass by others, they will see that your spaceship has shrunk in spatial length, and its once synchronized clocks located at the front and rear of the spaceship, are no longer synchronized, all due to the ship now extending a certain measure across the time dimension. Plus, thanks to your choice of increased spatial motion, and thus decreased motion across the time dimension, observers now also notice that your two clocks are now ticking slower than theirs.

helifynoe
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Thursday is my seminar on this for this wonderful session 🤝.

thrisha
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We've discussed this in my degree several times, but this video is great! You're a great lecturer.

I do have one theoretical question. How would the time difference calculations be different considering Michelson and Morley did not know that the Earth was moving in the direction of the ether or perpendicular to it. So really, there should be a component of velocity in the direction of the ether in both arms of the interferometer, no?

I understand that this full calculation would take too long and get in the way of the conceptual points brought up in the video, but does anyone have any resources to help me understand this aspect a little better?

nickallbritton
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SImple and detailed. Helped me very much...thank you so much sir

anon
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Thank you.. I started taking interest in understanding STR just because of your explanation.

fauziarahman
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Amazing explanation sir....keep uploading these videos ♡

madhumitabhowmik
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Nice video and presentation.
Remember that Michelson Morley experiment MMX assumes that Aether can drift past matter, atom and molecule freely without interaction or drag, like a ghost wind.

And by “no interaction”, light wave propagating in Aether cannot be received or transmitted by or from matter.

As a result of the ghost wind, the MMX apparatus can’t emit light at all.

Conclusion?
Aether is a fluid and moves in equal velocity with matter it attaches and not drift through or around matters.

The conclusion also explain why MMX velocity detection is net zero.

philoso
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Extremely wonderful 😊
Bundle of thanks sir😊

Ummesalma-hexc
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Perfect! This video cleared a lot of my doubts.

nihilisticboi
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oh thank you very much. GREAT work. thank you for your labor. thanks for this amazing video!!! 👏👏👏👏

ugursoydan
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I can't go from here without liking ur video and commenting .u really deserved in teaching physics I really enjoyed the way u teach and never felt boredom ....for the first time myself showed interest in learning physics😊..keep doing more videos 👍👍

venkatreddy
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I did many 12 th class topics from u... Now, got admission in HRC Delhi and gotta know that u used to teach here!!! I wish we could have been ur students

RenuSharma-osmc