General Relativity Explained
General Relativity Explained
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Einstein Hilbert Action Explained | What is Einstein Hilbert Action | Einstein Hilbert Action
#einsteinhilbertactionexplained
#whatiseinsteinhilbertaction
#einsteinhilbertaction
The Einstein Hilbert action is a fundamental concept of General Relativity that led to the formulation of Einstein Field Equation. David Hilbert arrived at the formulation of spacetime geometry using action priniciple and Einstein did that using partial differential equations which had various tensor components. Einstein Hilbert action has profound influence in understanding General Relativity as it is simpler, elegant and has far reaching consequences that even embraces other areas of physics including Quantum Field Theory. This video, will teach you in understanding the concept of Einstein-Hilbert action, the Einstein-Hilbert debate and the core concept of this formulation. This is the first part of the video and I will be covering the concepts in the subsequent series.
00:00 - 01:05 - Introduction
01:06 - 05:16 - Einstein Hilbert debate
05:17 - 08:03 - Einstein Hilbert debate scholars
08:04 - 12:14 - Chronology of events, 1913 to 1915
12:15 - 18:50 - What is Einstein Hilbert action
18:51 - 21:40 - Key factors of Einstein Hilbert action
21:41 - 22:27 - Conclusion
Welcome to General relativity explained.
This channel is dedicated for teaching Einstein's General Theory of Relativity. In this channel you will come to know everything about General relativity, its mathematics, online resources, books, pdf documents, UA-cam lectures and other resources. For those you are starting to learn relativity, this channel will be extremely useful as well as for those who are already in their graduate and post graduate studies.
Best wishes for your endeavor in this wonderful journey.
Email Id : generalrelativityexplained@gmail.com
Contact: +91 9830219677
Objectives of the channel
(i) To educate and inspire in learning Einstein's General Theory of Relativity.
(ii) Provide a complete understanding on Relativity and its mathematics
(iii) To guide and enable a lucid understanding of General Relativity and its complex mathematics
What will you learn from this channel?
(a) Einstein's General theory of relativity.
(b) All the mathematics of relativity.
(c) Tensor calculus, differential geometry, vectors, curvature tensors and everything related to the subject
(d) History of development of scientific thoughts
(e) An intutive and mathematical understanding of General relativity
About Me
My name is Shounak. I teach in a college. My subject of specializations are General theory of relativity, tensor calculus, differential geometry, quantum mechanics and topology. I play piano, write poems and I am a translator. I also teach communicative English.
Copyright © 2022 General relativity explained. All rights reserved.
#einsteinhilbertactionforbeginners
#einsteinhilbertactionfordummies
#whyweneedeinsteinhilbertaction
#actionprinciplephysics
#einsteinfieldequations
#einsteinfieldequationsexplained
#whatiseinsteinfieldequations
#einsteinfieldequationsforgeneralrelativity
#einsteinfieldequationsforbeginners
#einsteinfieldequationsandeinsteinhilbertaction
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#einsteinfieldequationforgeneralrelativity
#generalrelativityexplained
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КОМЕНТАРІ

  • @jordivilaioliveras
    @jordivilaioliveras 5 днів тому

    Great insights there! Thanks!

  • @physicsandsciencelectures2787
    @physicsandsciencelectures2787 7 днів тому

    Beautiful

  • @ZhanMorli
    @ZhanMorli 7 днів тому

    В фильме "Джентльмены удачи" преступник мучается и за ограбление "Детского сада". А вот кто мы? Как мы детей грабим, для карьер, премии. В Китае и Индии в плане строительства детекторов Гравитационных Волн. Также есть запуск тяжёлых ракет с межпланетными спутниками, типа LISA и так далее. Это более 13 миллиард $, сэкономим экологию Земли детям. При регистрации гравитационных волн, на шумы приходится 99,99% а на полезный сигнал 0,01% - поправьте. Крупным корпорациям на гос дотациях выгодны такие устройства. Один я не справляюсь, в защите экологии детям, но есть предложение; Учебное устройство "ГИБРИД гироскоп Майкельсона" для определения константы скорости света в самолёте, где получим полезный сигнал 75% на шумы 25% - нуждается в специалистах для улучшения устройства и составление технической документации на опытный образец - о котором мечтал в мысленных опытах А. Эйнштейн. GPS-навигация также подтверждает из опыта, что скорость света не является постоянной - Для этого просто отключите корректировки стационарных маяков. Определитель ложной информации в тёмной и чёрной силе в теоретической Вселенной и в искусственном интеллекте - это свет, в Гибрид гироскопе Майкельсон.

  • @subhanusaxena7199
    @subhanusaxena7199 8 днів тому

    Very interesting thank you. So is the Einstein-Hilbert derivable from first principles or just plucked out of the air, a bit like the Field Equations? It has always puzzled me why they can not be derived somehow from first principles. Thank you

    • @generalrelativityexplained
      @generalrelativityexplained 8 днів тому

      Thank you very much. Here is your answer The Einstein-Hilbert action is not directly derivable from first principles in the same way that, say, the Schrödinger equation can be derived from the underlying principles of quantum mechanics. However, it's not entirely "plucked out of the air" either. Here's a breakdown of its origins and significance: (1) Motivations and Derivation: Generalizing Newtonian Gravity: Einstein sought a theory of gravity that was consistent with special relativity and could explain the anomalous precession of Mercury's orbit. He knew that such a theory would have to involve the curvature of spacetime. (2) Principle of Least Action: The principle of least action is a powerful tool in physics, providing a framework for deriving equations of motion. Einstein aimed to formulate his theory of gravity within this framework. (3) Identifying a Suitable Lagrangian: The challenge was to find a Lagrangian density that would yield the desired field equations for gravity. Einstein and Hilbert, working independently, identified the scalar curvature R as a promising candidate.

  • @அய்யம்பெருமாள்

    thank you

  • @gilldeguill
    @gilldeguill 9 днів тому

    Very interesting

  • @Hik-n7p
    @Hik-n7p 12 днів тому

    Есть фильм «Джентльмены удачи» где преступник мучается и за ограбление "Детского сада". Ну а по жизни, мы да кто? Грабим детей, ради погонов, премии .. . Поможете сберечь экологию детям, да и для большой науки ресурсы? В Китае, Индии, Японии в плане строительства детекторов Гравитационных Волн. Также есть запуск нескольких тяжёлых ракет с межпланетными спутниками, типа LISA, у Китая запуск к 2033 году собственных спутников для изучения гравитационных волн и так далее. Это более 13 миллиард $. - Сбережём Экологию Земли детям? При регистрации гравитационных волн, на шумы приходится 99,99% а на полезный сигнал 0,01% - поправьте. Крупным корпорациям на гос дотациях выгодны такие устройства. Прямой опыт из учебного устройства "ГИБРИД гироскопа Майкельсона" определяет константу скорости света в самолёте, где получим полезный сигнал 75% на шумы 25% - нуждается в специалистах для улучшения устройства и составление технической документации на опытный образец - о котором мечтал в мысленных опытах А. Эйнштейн. Оптоволоконный гибрид гироскоп Майкельсона - это паровоз по вывозу ложной информации из тёмной и чёрных мест в теоретической Вселенной, да и из искусственного интеллекта.

  • @prasantakumarpadhi4399
    @prasantakumarpadhi4399 13 днів тому

    Great video🎉

  • @hardikkhurana3297
    @hardikkhurana3297 13 днів тому

    👍

  • @abinashkumarsingh-kolkata
    @abinashkumarsingh-kolkata 15 днів тому

    Great video...😊

  • @HisHigherness8472
    @HisHigherness8472 15 днів тому

    I've used a tensor bandage 🤕🦶🦵 lol

  • @sadafjamal2243
    @sadafjamal2243 16 днів тому

  • @wargreymon2024
    @wargreymon2024 17 днів тому

    This is very well explained

  • @prosahilgamer3741
    @prosahilgamer3741 17 днів тому

    Sir I literally searching for such a channel who can teach me general relativity in so much detailed manner thanks sir but I also wanted to study quantum mechanics in much more details sir can you please teach us as I find a lot of interest in quantum mechanics and I am intermediate in it Thank you sir for such a great explanation ❤

    • @generalrelativityexplained
      @generalrelativityexplained 17 днів тому

      That is wonderful. I will be launching a whole series of learning quantum mechanics, however, you can watch my videos on Quantum Mechanics on my other channel. Here are some useful links: Mathematics of Quantum Mechanics:ua-cam.com/video/DXPprWs4row/v-deo.html Quantum Mechanics for Beginners: ua-cam.com/video/7IEnKsoz-mw/v-deo.html New Course in Quantum Physics: Video 1 - ua-cam.com/video/m1hf7yAHOR4/v-deo.html Video 2 - ua-cam.com/video/Sm95lFPN9iw/v-deo.html Video 3 - ua-cam.com/video/X26G74O-8F0/v-deo.html I hope this helps.😃

  • @Vishnu-jr3wv
    @Vishnu-jr3wv 18 днів тому

  • @technoworld2539
    @technoworld2539 20 днів тому

    Gives us pdf the book 📚📖📚📖

  • @ShonMardani
    @ShonMardani 24 дні тому

    Imagine there is only earth and the moon and some of us were living on the moon. People on the earth will claim that moon is turning around the earth and the moon people will claim that the earth is turning around the moon, I say they are both correct, do you agree with me? Thank you for the video.

  • @carlowood9834
    @carlowood9834 25 днів тому

    I'll never know because that dogs barking forced me to stop the video. I really really can't stand barking.

    • @DavidFricker-x3h
      @DavidFricker-x3h 25 днів тому

      Shurly a person of your abilities can overcome this and focus on the topic

    • @generalrelativityexplained
      @generalrelativityexplained 25 днів тому

      Yes I understand. Sorry for the disturbance, I will try to remake that.

  • @HisHigherness8472
    @HisHigherness8472 27 днів тому

    Best physics teacher on the planet ☝️🥸🏅

  • @miteshkhobragade9232
    @miteshkhobragade9232 27 днів тому

    Happy new year🎉

  • @dosais
    @dosais Місяць тому

    more confused..

  • @marceliusmartirosianas6104
    @marceliusmartirosianas6104 Місяць тому

    12 may 2o2o talc matematical institute universita di OXFORDEY Marcelius MARTIROSIANAS Autore General et Relativita speciale et arxive 1 request 25 april 2o17 english vikipedia

  • @zamplify
    @zamplify Місяць тому

    22 completely useless seconds at the start

  • @52flyingbicycles
    @52flyingbicycles 2 місяці тому

    Tom Lehrer also wrote a humoresque song about him accusing him of plagiarism

  • @marceliusmartirosianas6104
    @marceliusmartirosianas6104 2 місяці тому

    INTEGRALLOG(E)(M)de= C^(n+1) arxive 1 autor ACADEMIC Universita di Florida MARCELIUS MARTIROSIANAS

  • @abinashkumarsingh-kolkata
    @abinashkumarsingh-kolkata 2 місяці тому

    Wonderful views

  • @juancarlossanchezveana1812
    @juancarlossanchezveana1812 2 місяці тому

    Excellent. Regards since Mexico...!!!

  • @abhijithR-zw1vv
    @abhijithR-zw1vv 2 місяці тому

    how can i combine quantum field and gravitational field

  • @ariyanariyan2001
    @ariyanariyan2001 2 місяці тому

    Great video.I am a student of class 9 and i am doing self research and study in physics.And finally,now iam in front of GTR course.so,would you please give the introduction to all of the main topics such as in case of newtonian mechanics ,first we learnt a bit calculus and then was making ourselves familiar with each of the terms and then dealt with kinematics and then with Newton's laws.would you please actually make us familiar with general relativity (not special relativity) in the same way

    • @generalrelativityexplained
      @generalrelativityexplained 2 місяці тому

      Hello, thank you very much for your feedback. This course on General Relativity wil cover up everything starting from Galilean Relativity, to Newtonian Mechanics, Special Relativity, non-Euclidean geometry, Differential geometry and so on... Also on this channel you will find whatever mathematics is required, Linear Algebra, vectors and Tensors and so on. So, stay connected and please share the video so that others can also learn.

  • @En_theo
    @En_theo 2 місяці тому

    Just a question none ever answered to me : if a black hole appeared suddenly near another black hole, would not that change the "shape/size" of the event horizon ? If yes, should not that allow an object to get out of it ? If not, how to explain that intuitively ?

    • @generalrelativityexplained
      @generalrelativityexplained 2 місяці тому

      The interaction between two black holes, especially if one suddenly appeared near another, indeed affects the shape and behavior of their event horizons. When two black holes come close enough to interact, they don’t retain independent, spherical event horizons. Instead, they form a complex, distorted, combined event horizon that behaves as one unit. Here’s a breakdown of why this doesn’t allow objects within the event horizon to escape: Merged Event Horizon Shape: When black holes approach each other, their event horizons merge into a single, larger event horizon that envelops both black holes. This shape is dynamic and often elongated or warped as the black holes orbit each other, but it’s still a continuous boundary. The merged horizon is mathematically a single surface that no part of can be exited from within. No Exit Pathway: The event horizon is a surface where escape velocity equals the speed of light. When two black holes merge, they don’t create an escape path; instead, their combined mass and gravity cause the merged event horizon to encompass both. Even if the event horizon’s shape changes, the light-cone geometry (the directions in which light can propagate) doesn’t shift to allow any direction that leads outward, so nothing can escape once within this new horizon.

  • @HisHigherness8472
    @HisHigherness8472 3 місяці тому

    I wonder if you can change the electrical reaction that forms Gravity and un-bend the Spacetime 😆 Modification of an object to repel from the ground would be quite an accomplishment 🤔👍

  • @hershyfishman2929
    @hershyfishman2929 3 місяці тому

    Great video! 17:29 If it's wrong, why is there such a convention?

    • @generalrelativityexplained
      @generalrelativityexplained 2 місяці тому

      By wrong I tried to mean that the picture of the person pushing the ball is erroneous as for gravitational potential it was just an analogy.

    • @hershyfishman2929
      @hershyfishman2929 2 місяці тому

      But how can the equation make sense without a minus sign? Wouldn't it mean that the acceleration is in the direction of increasing potential? How could that make sense?

    • @generalrelativityexplained
      @generalrelativityexplained 2 місяці тому

      @@hershyfishman2929 In gravitational potential, + and - signs indicate the direction of potential energy. Gravitational Potential: Gravitational potential (V) is a scalar field describing the energy per unit mass at a point in a gravitational field. Plus (+) sign: A positive gravitational potential indicates: 1. Energy required to move an object away from the source. 2. Repulsive potential (not common in gravity, but occurs in certain theories). 3. Higher potential energy. Minus (-) sign: A negative gravitational potential indicates: 1. Energy released when an object moves closer to the source. 2. Attractive potential (typical in gravity). 3. Lower potential energy. Example: Consider Earth's gravitational potential: - At infinity: V = 0 (reference point) - Near Earth's surface: V < 0 (negative, attractive potential) - Far from Earth: V > 0 (positive, repulsive potential, but decreasing) 1. Gravitational potential energy: U = mV 2. Gravitational field: g = -∇V

  • @lpi3
    @lpi3 3 місяці тому

    Thank you, but this is not the answer what is tensor but ruther where tensor come from.

    • @HisHigherness8472
      @HisHigherness8472 15 днів тому

      Guess you're not familiar, with the dozens of tensor lessons on this channel, that do explain the tensor ?

  • @pushpitgahtori5282
    @pushpitgahtori5282 3 місяці тому

    Hey I am very interested in your works and content on general relativity. I have some questions i am very curious to ask. They are slightly long so can i please get your email of something so we can communicate

  • @MJM17
    @MJM17 3 місяці тому

    IMO, Oscar Piastri was the most knowledgeable on his subject and the most impressive. Everybody else seemed to get multiple tries on at least one question. Except maybe Sergio, he didn’t seem to get many extra guesses 😂

  • @vishalvarshney-dv4dr
    @vishalvarshney-dv4dr 3 місяці тому

    Awesome 👍

  • @lokeshraybarman7007
    @lokeshraybarman7007 4 місяці тому

    Noted sir❤❤❤ twerf document ✅ Besso document ✅

  • @lokeshraybarman7007
    @lokeshraybarman7007 4 місяці тому

    Good to know that ilthia channel is specifically meant for relativity another hidden gem from your bag❤❤❤

  • @lokeshraybarman7007
    @lokeshraybarman7007 4 місяці тому

    Such kind of unique collaborations are always fruitful in different science fields wheather be it Einstein's this document or Einstein's collaboration with mr S.n . Bose or be it ramanujan with hardy❤❤❤❤❤

  • @lokeshraybarman7007
    @lokeshraybarman7007 4 місяці тому

    Your UA-cam channels are themselves deep subjects of study❤❤❤ proper methodical approach is required from someone who wants to learn from your channel ❤❤❤

    • @generalrelativityexplained
      @generalrelativityexplained 4 місяці тому

      A bunch of thanks and gratitude to you. I am not getting enough time to make more videos for this channel. Again , a lot of thanks 🙏

  • @lokeshraybarman7007
    @lokeshraybarman7007 4 місяці тому

    This channel is exclusively for relativity ❤❤❤the more i listen to you the more i am taken aback by your dedication ❤❤❤❤❤

  • @sirushomayouni7295
    @sirushomayouni7295 4 місяці тому

    The relation between Grassmann's ideas about linear algebra and general relativity is a suitable subject for undergraduates.God bless MarcelBic...

    • @generalrelativityexplained
      @generalrelativityexplained 4 місяці тому

      Yes. But a small correction. That is Hermann Günther Grassmann. Here I am talking about Marcel Grossmann, Swiss mathematician and friend of Einstein

  • @DragusCalliforous
    @DragusCalliforous 5 місяців тому

    Awesome vid! You mentioned a part 2... Where?

  • @subharunbanerjee6771
    @subharunbanerjee6771 6 місяців тому

    Sir your video is wrong right at the beginning. A quantum system in itself is not probabilistic.... only when a measurement is made the outcome is probabilistic. The Schrödinger equation is perfectly deterministic. Only when there is a transition from small scale to large scale probabilities come in. (Copenhagen interpretation)

    • @generalrelativityexplained
      @generalrelativityexplained 6 місяців тому

      Quantum mechanics supplies probabilities for all the things that might happen or all the things that might have happened in the past.

    • @subharunbanerjee6771
      @subharunbanerjee6771 6 місяців тому

      @@generalrelativityexplained that does not correct your statement

  • @dixztube
    @dixztube 7 місяців тому

    God imagine doing that in a war zone of an industrial war. That is amazing! Didn’t Ludwig Wittgenstein also come up with some great ideas in war.

  • @Duro314
    @Duro314 7 місяців тому

    Looks promising!

  • @rolfdubbeld
    @rolfdubbeld 8 місяців тому

    Chaotic website, one can find lecture 7, but were are 6, 5, 4, 3, 2, ???????????

    • @generalrelativityexplained
      @generalrelativityexplained 8 місяців тому

      The Einstein field equation is divided into 3 parts, starting from here ua-cam.com/users/liveuLaPw8gQL2M?si=Uyv2RIFS1apeIdHe However, the rest of the 7 lectures are on the general concepts of General Relativity. That is is why the numbering of the lectures are made Live Lectures 1,2,3.... The Part 1, Part 2 is mentioned to be specific on Eisntein Field Equations.

  • @daringumucio2779
    @daringumucio2779 9 місяців тому

    Also, are you familiar with any experiments regarding the effects on a light beam and shifts in its spectrum as it propagates through a radiation field and/or a magnetic field? I’m asking to see if the observed light coming to us from around the universe and it’s apparent red shift could be due to interactions as that light transitions from the interstellar medium to the heliopause which could create the illusion of Doppler shift which then would lead to the erroneous belief that the universe was expanding? That then would in turn get rid of the need for dark energy. Such an erroneous belief could explain the dead end physics has found itself in as of late regarding unification? Please let me know as well as sharing your thoughts on the hypothetical thought experiment of what the 2nd and 3rd order effects would be if the universe was static as Einstein once thought and not expanding? I worry that the observed red shift is our modern day equivalent to our former belief in the constancy of time in the 19th century which lead to the erroneous belief in the Aether which I believe could be equivalent to our current belief in universal expansion and the unprovable dark energy.

  • @daringumucio2779
    @daringumucio2779 9 місяців тому

    Thank you for the video! Do you believe that there could be value in revisiting Einstein’s final attempt to unify electromagnetism with General Relativity in his Unified Field Theory now that we have computers to help with the complex mathematics that I have always heard was the problem with his Unified Field Theory? I believe that it dealt with torsion which at first glance could be beneficial with strings?

  • @daringumucio2779
    @daringumucio2779 9 місяців тому

    Absolutely love it! Love how you tell what each component is and is for! Thank you!🙏