Speed of Light in a moving Medium - It's Not What you Think

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  • เผยแพร่เมื่อ 14 ต.ค. 2024

ความคิดเห็น • 41

  • @FortheLoveofPhysics
    @FortheLoveofPhysics  2 ปีที่แล้ว

    Relativistic Doppler Effect ► th-cam.com/video/d6ieu0Z8gAo/w-d-xo.html

    • @AngelAlita84
      @AngelAlita84 ปีที่แล้ว

      hello, would you be so kind to tell how did you put n outside the bracket? it is impossible-please show the method of simplification. I might be wrong!

  • @Rajendrakumar-qf3om
    @Rajendrakumar-qf3om 3 ปีที่แล้ว +10

    omg i was thinking about this and you post a video in this topic. what a coincience!

  • @reidmortensen2629
    @reidmortensen2629 3 ปีที่แล้ว +2

    HEYYYY! Alright! This is the answer to my comment question from yesterday. Thanks, brother.

  • @doctordisco7296
    @doctordisco7296 3 ปีที่แล้ว +3

    Better than most professors I ever had. Keep doing this please, I love your work

  • @doodelay
    @doodelay 2 ปีที่แล้ว +1

    I haven't seen a professor solve so elegantly since Flammable Maths started his channel

  • @souvik8110
    @souvik8110 3 ปีที่แล้ว +1

    Sir your teaching technique is just awesome.

  • @abhimanyu8754
    @abhimanyu8754 3 ปีที่แล้ว +1

    Sir you are one of my favorite teacher

  • @upsccoachojhasir459
    @upsccoachojhasir459 ปีที่แล้ว

    This channel is gold mine for physics lover

  • @uvofsam
    @uvofsam 3 ปีที่แล้ว +5

    Also do a video on why no rigid body are possible due to special relativity

  • @TANUJKUMARPandey9999
    @TANUJKUMARPandey9999 3 ปีที่แล้ว +2

    Something new i have learned..😊
    Thankyou

  • @D_oktor
    @D_oktor 3 ปีที่แล้ว +1

    Exactly what I was looking for. Great video!

  • @physics-plex
    @physics-plex 3 ปีที่แล้ว +2

    Love from Kolkata ❤️

  • @doniaawawda8437
    @doniaawawda8437 6 หลายเดือนก่อน

    Thank you so much for your excellent explanation of relativity.

  • @زينالعابدينماجد-خ1خ
    @زينالعابدينماجد-خ1خ 3 ปีที่แล้ว +1

    Thank you

  • @HighEnergyScientist
    @HighEnergyScientist 3 ปีที่แล้ว +4

    Sir explain which reduces the speed of light while travelling in denser medium . Consider my request sir

    • @swagatamtah4570
      @swagatamtah4570 3 ปีที่แล้ว

      Light cannot exits without speed c in anywhere(air or any medium) but when it incident on a medium then superposition of the transmitted ray and incident ray propagates in the medium and a phase change occurs in the transmitted ray so the phase velocity changes only.

  • @radha94
    @radha94 3 ปีที่แล้ว +4

    Second law of thermodynamics state that entropy always increase. So how can we explain in the situation of fall object?? Is object place on top use to have High entropy than ground???how can we explain with higher disorder and Lower disorder in this situation.???please answer my questions

    • @SceneONhai360
      @SceneONhai360 3 ปีที่แล้ว

      As per my understanding , the disorder in a system is related with its energy states. For the situation you have given, consider the system/object has two energy states (for simplicity) one at height and second near the ground. Now when the object falls to the ground its previous energy state is loss hence entropy increased. It wont attain the same energy state until some external work is done on it (energy provided to system). Hence for an isolated system entropy always increases.
      You may also wonder what if this body is connected to a spring/or moving like a yoyo similar situation happens there as well. If no external work is done on the system its amplitude reduces at each round trip hence it also loses its energy states at each round trip.
      hope this clarifies your doubt.

  • @NRUSINGHAPRASADMAHAPATRA
    @NRUSINGHAPRASADMAHAPATRA 3 ปีที่แล้ว +1

    Thanks sir 😊🙏🙏

  • @annmarykurian8738
    @annmarykurian8738 3 ปีที่แล้ว +1

    Can you please take a video of solved previous year questions of csir net

  • @NIKHILSingh-yc7kn
    @NIKHILSingh-yc7kn 3 ปีที่แล้ว +2

    Pls keep it thx

  • @DineshPhysics555
    @DineshPhysics555 3 ปีที่แล้ว +2

    Nice explanation, but i have a doubt about the direction of photon. Does direction of photon with respect to the medium matter or not?

    • @FortheLoveofPhysics
      @FortheLoveofPhysics  3 ปีที่แล้ว +2

      It matters. In case of inclined direction along xy plane lets suppose, find velocity components along x and y axis. Apply velocity transformation on both components and then obtain the final magnitude from there.

    • @DineshPhysics555
      @DineshPhysics555 3 ปีที่แล้ว

      @@FortheLoveofPhysics thanks, I got my point.

    • @svendhansen5427
      @svendhansen5427 3 ปีที่แล้ว

      @@FortheLoveofPhysics
      I have a hard time agreeing to your conclutions. Stupid as I am.
      Presuming I sit in a medium, like on the backseat of a rocket at the speed of light and shine my flashlight forward to read my book, but I cann't :'( as the light will not leave my flashlight.
      But turning around I can use it, as the photons will do 2 x 300.000 km / sec away from me, but off course only 300.000 through space.
      I should think that a differens apply with any speed of light in any medium.
      If not,: The light should keep pace in an expading universe (seen as a moving medium). That said I enjoy your know how and sharing.

    • @FortheLoveofPhysics
      @FortheLoveofPhysics  3 ปีที่แล้ว +2

      @@svendhansen5427 second postulate - speed of light in vacuum is same for all (even for an observer travelling at high speeds). So in your example the light will travel forward and backward at same speed. Normal ideas of velocity transformation don't apply to light speed

    • @doutormanhattan5680
      @doutormanhattan5680 ปีที่แล้ว

      ​@@svendhansen5427you can't travel ar the speed of light. Watch previous video on this series.

  • @ankitshaw7239
    @ankitshaw7239 2 ปีที่แล้ว

    Sir why did n't u use velocity transformation instead of inverse velocity transformation

  •  2 ปีที่แล้ว

    There is an assumption at the beginning that the speed of light in the medium and the refractive index are relative to the medium's frame of reference S'. Where does that come from? Why not to the observer? I don't see it as prooved.

  • @Cyphernemasis
    @Cyphernemasis 3 ปีที่แล้ว +1

    Sir ,, Can you please clarify the derivation of this formula : *m = m0 / (1- v^2/c^2)^1/2* i.e., Relativistic mass formula ...
    Please sir make a video on this

  • @rajuranjankumar1695
    @rajuranjankumar1695 3 ปีที่แล้ว

    Thanks sir 🙏

  • @rajaryan91
    @rajaryan91 2 ปีที่แล้ว

    Is it the topic dragging of light by moving medium..i am bit confused

  • @physicstheoryofmetinaridasir
    @physicstheoryofmetinaridasir 2 ปีที่แล้ว

    I SUGGEST HAVING A LOOK AT THE FIRST PART OF MY THEORY AND MY FIRST FORMULA WHICH DETERMINES A LINEAR VELOCITY OF...6.3 TIMES GREATER THAN THE SPEED OF LIGHT, ETC. AND I TOLD WHERE OUR MEASURED CONSTANTS ARE ROOTED IN. We need to change the concept of matter that makes us imprisoned by all kinds of impressions and especially by accepting the vacuum illusion which it has been sitting comfortably in it

  • @smrutipragnya6975
    @smrutipragnya6975 3 ปีที่แล้ว +1

    Sir what happen if any particles break the relativity law and exceed the speed of light..??????. Means I know it's not possible but if I'm in a different universe, where this can be possible then what happen to the mass, length and time parameters in this case..... Sir plz explain if possible..it's a big request🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

    • @SceneONhai360
      @SceneONhai360 3 ปีที่แล้ว +1

      In that universe that other particle's speed would the ultimate speed of that universe

  • @asishswain1860
    @asishswain1860 3 ปีที่แล้ว +1

    Sir where r u from;?

  • @ibrahimsaidali3140
    @ibrahimsaidali3140 2 ปีที่แล้ว

    Use it with number.

  • @nagadurgarajuadaka
    @nagadurgarajuadaka 3 ปีที่แล้ว

    Suddenly you came from a celestial body...iam thinking....
    .