Quantum mechanics as a framework. Defining linearity

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  • เผยแพร่เมื่อ 9 ก.พ. 2025

ความคิดเห็น • 616

  • @qbtc
    @qbtc 2 ปีที่แล้ว +983

    What MIT has been doing for the last decade is give free access to classes that are better than what most university students in the world are paying tuition for. Granted, you don't get a degree nor the benefit of social interaction with other students and professors, but to the student who is willing to put in the time and effort, this is an unbelievable treasure.

    • @RalphDratman
      @RalphDratman 2 ปีที่แล้ว +34

      I agree!
      At age 71 I am now auditing on TH-cam, for free, the lectures on QM that I wish I could have had when I was a sophomore in college, in 1970.
      The QM lectures I tried to follow at my college then were, as I perceived them, unacceptably awful, and I simply stopped going.
      Quitting the course like that, on impulse, was foolish of me, and the resulting academic failure was entirely my fault.
      Yet the fact remains the few lectures I did attend were terrible --- and these MIT lectures are fantastic, superb.

    • @kinildsongessiopersegueiro
      @kinildsongessiopersegueiro ปีที่แล้ว +6

      Indeed.
      Stanford does that too.

    • @John-ub9dl
      @John-ub9dl ปีที่แล้ว +5

      Best content on the internet.

    • @Chayapathy_S
      @Chayapathy_S ปีที่แล้ว

    • @keepsecret7624
      @keepsecret7624 ปีที่แล้ว +3

      In Germany Uni education is free. A lot of TH-cam material is bad, but this is not one of those cases!

  • @jackyfelder2563
    @jackyfelder2563 4 ปีที่แล้ว +530

    I'm 69 yrs old, had calculus based physics in college when I was about 37. i barely passed but loved it. I want to learn more.

    • @3zombie81
      @3zombie81 4 ปีที่แล้ว +5

      are you an engineer? Did you take statics I'm struggling with it..

    • @en-jw1bx
      @en-jw1bx 3 ปีที่แล้ว +18

      you are doing a great job! this comment made me happy!

    • @anonymousguy9263
      @anonymousguy9263 3 ปีที่แล้ว +3

      @@3zombie81 I think statics is easy dude..

    • @Yash-wm1nj
      @Yash-wm1nj 3 ปีที่แล้ว +5

      Nice

    • @منوبيالفلسطي
      @منوبيالفلسطي 3 ปีที่แล้ว +2

      I invite you to read about Islam , I'm an energy engineer..and love physics, I studied Islam and found it the unique religion that's based on proofs and evidences..,I highly recommend you honestly from the bottom of my heart.
      all of us will die someday..plz read about it to see the truth for yourself..

  • @Josesuarez-ow9zq
    @Josesuarez-ow9zq 24 วันที่ผ่านมา +6

    Happy 100 years of quantum mechanics!

  • @nelsonmichaelvillegasjuro4362
    @nelsonmichaelvillegasjuro4362 5 ปีที่แล้ว +141

    I feel very proud because Dr. Barton is from my FIEE faculty at UNI in Lima, Peru.

    • @phantom2.065
      @phantom2.065 10 หลายเดือนก่อน +6

      Hay Internet en Perú?

    • @nichokind5233
      @nichokind5233 10 หลายเดือนก่อน +11

      @@phantom2.065ERES CHILENO?

    • @legere9779
      @legere9779 9 หลายเดือนก่อน

      @@nichokind5233 más allá de su nacionalidad, debe tratarse de un completo retrasado.

    • @alfa-jorcito
      @alfa-jorcito 6 หลายเดือนก่อน +3

      @@phantom2.065 xddd no opines subdesarrollado

    • @elwaza888
      @elwaza888 4 หลายเดือนก่อน

      ​@@phantom2.065estas viendo un video de un Peruano egresado de una universidad peruana que dicta clases en MIT

  • @Trey-x6f
    @Trey-x6f 5 หลายเดือนก่อน +58

    I am 15 years old and I am watching this for free, we are blessed to be in this age of information.

    • @ricksmith1382
      @ricksmith1382 4 หลายเดือนก่อน +2

      Not sure about the blessed part, but with our increase knowledge of science and technology, videos such as this one are accessible to everyone. Enjoy!

    • @hightempest
      @hightempest 4 หลายเดือนก่อน +4

      Fr dude I’m 16 able to try and comprehend these advanced terms well in advance to when I’ll need them mastered. This age is truly revolutionary

    • @vanshagarwalVIII-Arollno48
      @vanshagarwalVIII-Arollno48 4 หลายเดือนก่อน +3

      Im also 15 years old

    • @3x3gaming93
      @3x3gaming93 4 หลายเดือนก่อน +2

      I am also 15 dude amazing

    • @AnaSofiaRivasCruz
      @AnaSofiaRivasCruz 3 หลายเดือนก่อน +4

      I am 14. Truly amazing!

  • @divyamgoel8902
    @divyamgoel8902 7 ปีที่แล้ว +132

    I love the fact that 8.04 has been segmented into smaller videos. This makes it much more easier to learn. Thank You so much MIT OCW.

    • @benbarberian1701
      @benbarberian1701 4 ปีที่แล้ว +11

      But they removed students asking doubts, which is like grave sin, gods doubts and doubt resolving is key to the classroom efficacy, because instructors cannot say everything.

    • @aubade8093
      @aubade8093 3 ปีที่แล้ว +2

      Mee too love this course

  • @jco6345
    @jco6345 5 ปีที่แล้ว +143

    I'm french, and it's so easy to understand him because he speaks slowly. Very good job also !! Thanks so much

    • @cuteworld1637
      @cuteworld1637 4 ปีที่แล้ว +6

      Bonjour, we are jealous of you!

    • @inspirex1831
      @inspirex1831 4 ปีที่แล้ว +2

      Bonjour , je habite a india . Comment cava ???I learnt french in school

    • @Quaresalas
      @Quaresalas 4 ปีที่แล้ว +4

      Pardon me, but I really like his accent, it is so magical like a magician in Hogwarts, and I can't stop extending my fond to quantum physics because of him, his charming accent and slow speaking speed ❤️❤️❤️

    • @biblof2210
      @biblof2210 11 หลายเดือนก่อน

      ​@@inspirex1831hii I just saw your comment and want to have a update on your french vocabulary. Did you improve ? And if yes how much ?

  • @0-To-100
    @0-To-100 7 ปีที่แล้ว +126

    Wow, what a precious opportunity to have this education. thank you MIT OCW for making this possible for everyone!!!!

  • @ijwyn_13s
    @ijwyn_13s 28 วันที่ผ่านมา +6

    I am truly grateful to MIT for giving us the opportunity to access this knowledge. Physics is not my major, but I have loved it since I was a child. Currently, I am a first-year student majoring in communications in a country halfway around the world from the U.S., but my passion for physics has never faded. I have decided to self-study and gain more knowledge every day. Today is my first day, so I wanted to leave this comment to express my gratitude for this incredible resource and to make a commitment to myself to study hard every day.

  • @Physicslover1729
    @Physicslover1729 2 ปีที่แล้ว +26

    These professors of MIT OCW are amazing .
    I understood all the concepts very easily.
    The way teach is awesome.

  • @mikethelegendarygamer4581
    @mikethelegendarygamer4581 7 ปีที่แล้ว +616

    I like learning at M.I.T at the comfort of my home!

    • @sezbethc2765
      @sezbethc2765 5 ปีที่แล้ว +7

      @nPlatin You didn't really refute his point with that link. Do you really believe that all of those people on that list became what they are 'just' by listening to lectures? Autodidacts have to practice and discuss exercise sets too - just in an environment outside of the classroom.

    • @black_jack_meghav
      @black_jack_meghav 5 ปีที่แล้ว +3

      @Hugh Jones wow a comment i actually appreciate from the deepest of my conscience

    • @Igi293
      @Igi293 5 ปีที่แล้ว +1

      Sezbeth C thank you

    • @themooseyoyos
      @themooseyoyos 4 ปีที่แล้ว +13

      This comment holds greater meaning in 2020

    • @qpkwsxcb8277
      @qpkwsxcb8277 4 ปีที่แล้ว

      @@themooseyoyos True.

  • @dhruvshandilya6761
    @dhruvshandilya6761 4 ปีที่แล้ว +101

    Quarantine second month : now I am done with series lets study some quantum physics

    • @jackyfelder2563
      @jackyfelder2563 4 ปีที่แล้ว +6

      WOW! i'm 69 and just starting this series.

    • @alwaysbored47
      @alwaysbored47 4 ปีที่แล้ว +1

      @@jackyfelder2563 how is it going?

    • @peeper2070
      @peeper2070 4 ปีที่แล้ว +4

      @@alwaysbored47 He won the Nobel Prize this year

    • @rishabmishra6957
      @rishabmishra6957 3 ปีที่แล้ว +1

      @@peeper2070 what is his name ? Can u please tell me

  • @tumi20171
    @tumi20171 9 วันที่ผ่านมา +2

    Dr. Barton and I studied at the same faculty in the same year, 1972. The National University of Engineering of Peru is a historically recognized center of studies because the entrance exams are very rigorous and difficult. Once accepted, on the scale of 0-20, the average student scores between 13 and 15. There are rarely students who get perfect scores. Barton was one of them. Barton earned his Ph.D. in 1983, under the supervision of Murray Gell-Mann. He held postdoctoral positions at the University of California, Berkeley, and MIT, where he became an adjunct professor of physics in 1987 and a permanent faculty member in 1994.

  • @ivanpacheco753
    @ivanpacheco753 หลายเดือนก่อน +7

    Happy centenary of quantum mechanics🎉

  • @tahirjamil1679
    @tahirjamil1679 2 ปีที่แล้ว +27

    I am really really grateful to MIT for providing these online lectures
    and i also admire the instructor Barton Zwieback for his teaching method
    thanks MIT

  • @oldcowbb
    @oldcowbb 7 ปีที่แล้ว +126

    I love how he just laugh from pure joy

  • @AnjanShrestha1988
    @AnjanShrestha1988 3 ปีที่แล้ว +15

    Thank you MIT OCW for bringing the excellent source of lectures to the open world so that everyone can get knowledge and strive to make some contribution after learning it

  • @marialiyubman
    @marialiyubman 4 ปีที่แล้ว +41

    This professor’s handwriting 😍

  • @leolee4101
    @leolee4101 6 ปีที่แล้ว +65

    Love You MIT!

  • @Dudleymiddleton
    @Dudleymiddleton 5 ปีที่แล้ว +5

    The special ability to portray on a proper blackboard and chalk is shown here in it's entirety. I remember my physics teacher at secondary school, chalked in a very similar way to Barton, but the joined up writing was almost illegible, the speed he did it!

  • @rogermarceloramirezramirez6120
    @rogermarceloramirezramirez6120 ปีที่แล้ว +33

    Siempre una pequeña emoción de ver a un peruano triunfando en el extranjero y mejor si es de mi univ , de mi humilde UNI
    Tendré un susti en 2 días , te dedido mi próximo 20 querido Barton :")

  • @almahmud9508
    @almahmud9508 5 ปีที่แล้ว +12

    I am learning from MIT all times, I hope this is my best School for learning

  • @BorysPodwysocki
    @BorysPodwysocki 6 หลายเดือนก่อน +1

    I am very grateful to have this available completely for free and it's quite refreshing in today's world of paid courses. Great Initiative of Everybody involved!

  • @ryankim1999
    @ryankim1999 3 ปีที่แล้ว +4

    This helped me through my Quantum Mechanics class during covid when my professor just stopped having lessons all together.

  • @victoriajiang3673
    @victoriajiang3673 6 ปีที่แล้ว +9

    It is so good and I think it is enjoyable. The fact which is a bit sad is, I found it out just now, not earlier.

  • @ercanonal7177
    @ercanonal7177 4 หลายเดือนก่อน +1

    It's a very good chance to listen and watch MIT courses (such as being a student in a real university) whoever curious (not only students but also researchers and curious persons) wherever in the whole-world.

  • @eli-bg9mi
    @eli-bg9mi 4 ปีที่แล้ว +11

    Spending time wisely during lockdown by watching MIT OCW lectures 🙌

  • @ThousandYearsInthySight
    @ThousandYearsInthySight ปีที่แล้ว +2

    This introduction to Quantum Mechanics was incredibly clear and insightful. I'm Excited to dive deeper into this fascinating field!

  • @luisfevel
    @luisfevel 3 ปีที่แล้ว +3

    I feel proud to see a countryman teaching at MIT. I am from Peru.

  • @univgate5968
    @univgate5968 4 ปีที่แล้ว +5

    You're the best prof. Zwiebach

  • @hemanthkotagiri8865
    @hemanthkotagiri8865 5 ปีที่แล้ว +15

    2X the normal speed will save a lot of time and the pace sounds very normal. Thank you, MIT.

    • @RalphDratman
      @RalphDratman 2 ปีที่แล้ว +3

      Thank you for the suggestion, but these are perfect for my specific brain at 1x.

    • @intpsoftware5784
      @intpsoftware5784 2 ปีที่แล้ว

      I think anything less than 5x is a bore

  • @andycris3072
    @andycris3072 ปีที่แล้ว +9

    Barton, un orgullo peruano 🇵🇪

  • @prachijaiswal6595
    @prachijaiswal6595 3 ปีที่แล้ว +2

    Way of speaking is so understanding!! 🤗

  • @zapparolisphotography5383
    @zapparolisphotography5383 6 ปีที่แล้ว +44

    Outstanding professor. Exceptional didactical capabilities.

  • @PauloConstantino167
    @PauloConstantino167 6 ปีที่แล้ว +9

    THANK YOU MIT. YOU ARE AN ANGEL IN OUR MORTAL LIVES !!!!!

  • @NatthuSingh-b4u
    @NatthuSingh-b4u ปีที่แล้ว +4

    If we get teachers like you we will master in physics or in any subject

  • @arnoldaguirre8424
    @arnoldaguirre8424 5 ปีที่แล้ว +14

    If you put it on 2x you'll be listening to a friend who is explaining something they like

  • @jinswindshieldwiperlaugh1978
    @jinswindshieldwiperlaugh1978 5 ปีที่แล้ว +8

    I absolutely love these classes.👌

  • @bryabr5280
    @bryabr5280 ปีที่แล้ว +2

    "Why must there be complex numbers in quantum mechanics? Because the Schrödinger equation already has an "i" in it" - this is one brilliant explanation!

    • @lepidoptera9337
      @lepidoptera9337 ปีที่แล้ว

      We don't have to. There is a version that uses quaternions. It just doesn't add anything as far as I know. Neither would a version that would remove "i" and use a vector representation with two real numbers help in any way.

  • @MGdriver77
    @MGdriver77 7 ปีที่แล้ว +7

    I am excited to have found this. You guys are amazing.

  • @SethuIyer95
    @SethuIyer95 7 ปีที่แล้ว +38

    This is something I always wanted to learn. Thank you MIT OCW.

  • @Bralmet
    @Bralmet หลายเดือนก่อน +1

    This is a marvelous expanded quantum theories 👍

  • @gercrezone6342
    @gercrezone6342 29 วันที่ผ่านมา +1

    WOW! I'm in the year 2025 and I only just now know that these quantum physics classes are available at MIT from YT 🤯

  • @subramaniamg8004
    @subramaniamg8004 7 ปีที่แล้ว +17

    just 3 minutes watched the starting lecture, decided to learn full course videos. thanks for sharing the videos, i will try to utilise to my fullest potential. Thanks to instructor also. :)))

  • @kinildsongessiopersegueiro
    @kinildsongessiopersegueiro ปีที่แล้ว +1

    Greetings from Brasil and thks US and MIT.

  • @Proplayer69420
    @Proplayer69420 20 วันที่ผ่านมา

    He sounds like a chill guy

  • @likestomeasurestuff3554
    @likestomeasurestuff3554 4 ปีที่แล้ว +6

    I appreciate all of these courses tremendously!

  • @ShermanSitter
    @ShermanSitter 5 ปีที่แล้ว +14

    So...I can take this class on TH-cam?! I'm so happy....but I may never leave the house again after finding this and other amazing courses!

  • @Sri_Harsha_Electronics_Guthik
    @Sri_Harsha_Electronics_Guthik 6 ปีที่แล้ว +19

    he is like dr.strange with an accent. these are the best lectures in the quantum mechanics on you tube as far as i know.

    • @tousifalam1681
      @tousifalam1681 4 ปีที่แล้ว +1

      See V. BALAKRISHNAN lectures on u tube IIT MADRAS

    • @Sri_Harsha_Electronics_Guthik
      @Sri_Harsha_Electronics_Guthik 4 ปีที่แล้ว +1

      @@tousifalam1681 tq will definitely check them out. Any lecture in particular, is better than others among these IIT lectures?

  • @christineyang1552
    @christineyang1552 4 ปีที่แล้ว +1

    MIT saved my life.

  • @KacemAmineJa
    @KacemAmineJa 7 ปีที่แล้ว +3

    Thank you MIT for this new version

  • @stephenanastasi748
    @stephenanastasi748 4 ปีที่แล้ว +2

    What a beautiful explanation of linearity.

  • @allyourcode
    @allyourcode 4 ปีที่แล้ว +3

    @16:13 This is (IMHO) very weird notation. What L = d/dt + 1/tau means is that we are defining L to be an operator, and when you apply that operator to some quantity u, then the result is du/dt + u/tau. One problem that I have with this notation is that Lu suggests that we are simply multiplying d/dt + 1/tau with u, but that's not what's going on. Rather, what this definition of L tells us to do with u is take the derivative with respect to t (plus some other stuff), which is emphatically NOT multiplication.
    Of course, every linear operator can be expressed as a matrix multiplication (with respect to some basis), which explains why we write Lu, but it's kind of confusing to present it this way without reminding everyone that linear operators and matrices are "the same thing".

  • @hermannaftaliiek8683
    @hermannaftaliiek8683 5 ปีที่แล้ว +47

    I committed to be a physics student at MIT one day.

    • @michaelwerd4825
      @michaelwerd4825 4 ปีที่แล้ว +2

      So you are not in it for physics but just for the status.
      Physics today is more of a hoax than really learning about the nature of objects and processes (while what appears to us as an object also is a process - and the other way around...depends on the angle and distance of view).

    • @sahilrathi_
      @sahilrathi_ 4 ปีที่แล้ว +4

      @@michaelwerd4825 Bro it could be the interest too.I always aspired to become astrophysicist but due to some problem during entrance,I couldn't get sufficient rank to get a engineering physics course at a good college .So I now chose job security and studying C.S. but here I am also perceiving my interest side by side!❤️

    • @vaishnav_mallya
      @vaishnav_mallya 4 ปีที่แล้ว +3

      @@michaelwerd4825 It's absolutely okay if he wishes for more opportunities. In MIT, you'll come across brilliant people from around the world. The environment also affects the way you learn and understand.

  • @sridevi5999
    @sridevi5999 4 ปีที่แล้ว +1

    Expressing gratitude from India.

  • @Shubhkaramdeep
    @Shubhkaramdeep 7 ปีที่แล้ว +9

    Thanks MIT OCW for sharing. Wonderful to learn from great teachers

  • @noahholbrook3465
    @noahholbrook3465 5 ปีที่แล้ว +2

    I’m only thirteen studying this course by option here in Kentucky and it truly is explained in a great way I can understand it. Thank you.

    • @TheGamingg33k
      @TheGamingg33k 5 ปีที่แล้ว +2

      Im 6 years old. This course is explained so well too. I now understand how to solve quantum gravity.

    • @robertostevens2666
      @robertostevens2666 4 ปีที่แล้ว +1

      Any idiot can click on a youtube video, go somewhere else if you want attention, no one here gives a fuck how old you are

  • @Rylan_animations
    @Rylan_animations 5 หลายเดือนก่อน

    I am 13 trying to get a job at a nuclear plant. Now to do so I only require I high school diploma but to really stand out I am learning this before going to college for the actual diploma. This first lesson I understood very well. Thank you for this.

  • @johanndavidson6176
    @johanndavidson6176 4 ปีที่แล้ว +4

    Such a good lecture. Congrats professor.

    • @__Arif
      @__Arif 4 ปีที่แล้ว

      I don’t understand this lectur. Please tell me about prerequisite thing to understand this course

  • @hype_xin
    @hype_xin 29 วันที่ผ่านมา +1

    Its 2024 sir congratulations

    • @hype_xin
      @hype_xin 29 วันที่ผ่านมา +2

      2025 actually

  • @robingoff521
    @robingoff521 7 ปีที่แล้ว +3

    that's what its all about - i think - feed me - more input
    excellent thanks to all at mit

  • @literaturewithjayneel
    @literaturewithjayneel หลายเดือนก่อน +1

    You explain very clearly thank you so much!!!

  • @omarcuerdas
    @omarcuerdas ปีที่แล้ว +2

    Excelent teacher Bartton from Perú

  • @johnpatrickoldfield534
    @johnpatrickoldfield534 3 ปีที่แล้ว +5

    I thought there was going to be four more theories in that episode. I studied derivatives in first year calculus. It’s fairly interesting. I also studied quantitative methods in quantitative economics so I have seen multiple variable analysis in large equations and scatter plots with discrete, unknown and known variables, hypothesis and null hypothesis examples, practices and methods applied mostly to the household. However there’s many application processes. I have also studied linear programming in C# programming. I enjoyed the interpretation of the maxwell equation with four variables and the pairings are quite interesting for application selection. I also liked the practicality of the graph axis explanation and combining the the known and unknown variables. Curious about the gravity equations inclusions into the applications.

  • @CarterColeisInfamous
    @CarterColeisInfamous 7 ปีที่แล้ว +11

    this is brilliant love it

  • @BennettAustin7
    @BennettAustin7 5 ปีที่แล้ว +47

    “Why the laugh?”😂

  • @wise1xo
    @wise1xo 5 ปีที่แล้ว +3

    This is unreal, I get to go to MIT!

  • @wolverinestark-ju2ee
    @wolverinestark-ju2ee 9 หลายเดือนก่อน

    Watching my 9th MIT lecture series and outperforming my knowledge

  • @___The_Paradox
    @___The_Paradox ปีที่แล้ว

    I have a great feeling that this teacher is super.

  • @higgs_boson2231
    @higgs_boson2231 4 ปีที่แล้ว +9

    Everyone should donate to OCW, they put a lot of effort into something most colleges don't even think of

  • @李愚-f7j
    @李愚-f7j 5 ปีที่แล้ว +5

    wow this is so well organised! best on QM ever seen

  • @youziyang
    @youziyang 3 หลายเดือนก่อน

    It's very important for me, physics student.

  • @muttleycrew
    @muttleycrew 2 ปีที่แล้ว

    The centenary of quantum theory (as opposed to quantum mechanics) was on December 14, 2000.
    That was, to the day, 100 years after Planck solved the ultraviolet catastrophe by introducing the constant now named after him and the notion, to which he gave no physical basis at all, that a blackbody cavity cooled down but radiating light in what he called "quanta" or "packets".
    In 1905 Einstein interpreted Planck's notion of quanta as discrete particles of light. He found this was helpful in giving a theoretical model of the photoelectric effect, discovered by Hertz and studied by Philipp Lenard. Light, said Einstein, was emitted and absorbed as corpuscles. When he calculates the energy of the photons using Planck's constant, it is the first time a wave-type of equation is connected with the idea of corpuscles. This will become known as wave-particle duality.
    In 1913 Niels Bohr used the notion of non-decaying orbitals in the hydrogen atom to model and compute hydrogen's spectral lines, the infamous Balmer and Paschen lines. You could make a case that the mechanics part of QM started here since everything which has come since is a theoretical refinement on these ideas.
    In 1924 De Broglie wrote the first equation for the momentum of a free particle in terms of a matter wave and used that to show that Bohr's orbitals had the property of periodicity of the matter wave. No question that was a big breakthrough.
    But yeah, 1925 is the big one. That's a watershed year. That's when Schroedinger and Heisenberg both formulate a non-relativistic version of QM and use this bizarre notion of matter waves to describe free particles as de Broglie had, but also the bound states of particles.
    That same year you also get Max Born writing a paper with Heisenberg and Jordan on the inherently statistical nature of QM. This was a shocking development in theoretical physics: it is a seminal paper in which matrices are introduced into theoretical physics with aplomb and their non-commutative algebra is also discussed. Many of the key elements of quantum theory we know and love arrive in 1925.

  • @dedsec2926
    @dedsec2926 5 ปีที่แล้ว +1

    The videos are very well organized.

  • @vladimirzadiran5609
    @vladimirzadiran5609 5 ปีที่แล้ว +2

    Гений, просто гений. A genius, just a genius.

  • @carlosalexandreFAT
    @carlosalexandreFAT ปีที่แล้ว

    The association of the main numbers in the field of mathematics with each other, reflects numerical sequences that correspond to the dimensions of the Earth, the Moon, and the Sun in the unit of measurement in meters, which is: 1' (second) / 299792458 m/s (speed of light in a vacuum).
    Ramanujan number: 1,729
    Earth's equatorial radius: 6,378 km.
    Golden ratio: 1.61803...
    • (1,729 x 6,378 x (10^-3)) ^1.61803 x (10^-3) = 3,474.18
    Moon's diameter: 3,474 km.
    Ramanujan number: 1,729
    Speed of light: 299,792,458 m/s
    Earth's Equatorial Diameter: 12,756 km. Earth's Equatorial Radius: 6,378 km.
    • (1,729 x 299,792,458) / 12,756 / 6,378) = 6,371
    Earth's average radius: 6,371 km.
    The Cubit
    The cubit = Pi - phi^2 = 0.5236
    Lunar distance: 384,400 km.
    (0.5236 x (10^6) - 384,400) x 10 = 1,392,000
    Sun´s diameter: 1,392,000 km.
    Higgs Boson: 125.35 (GeV)
    Golden ratio: 1.61803...
    (125.35 x (10^-1) - 1.61803) x (10^3) = 10,916.97
    Circumference of the Moon: 10,916 km.
    Golden ratio: 1.618
    Golden Angle: 137.5
    Earth's equatorial radius: 6,378
    Universal Gravitation G = 6.67 x 10^-11 N.m^2/kg^2.
    (((1.618 ^137.5) / 6,378) / 6.67) x (10^-20) = 12,756.62
    Earth’s equatorial diameter: 12,756 km.
    The Euler Number is approximately: 2.71828...
    Newton’s law of gravitation: G = 6.67 x 10^-11 N.m^2/kg^2.
    Golden ratio: 1.618ɸ
    (2.71828 ^ 6.67) x 1.618 x 10 = 12,756.23
    Earth’s equatorial diameter: 12,756 km.
    Planck’s constant: 6.63 × 10-34 m2 kg.
    Circumference of the Moon: 10,916.
    Golden ratio: 1.618 ɸ
    (((6.63 ^ (10,916 x 10^-4 )) x 1.618 x (10^3) = 12,756.82
    Earth’s equatorial diameter: 12,756 km.
    Planck's temperature: 1.41679 x 10^32 Kelvin.
    Newton’s law of gravitation: G = 6.67 x 10^-11 N.m^2/kg^2.
    Speed of Sound: 340.29 m/s
    (1.41679 ^ 6.67) x 340.29 - 1 = 3,474.81
    Moon's diameter:: 3,474 km.
    Cosmic microwave background radiation
    2.725 kelvins ,160.4 GHz,
    Pi: 3.14
    Earth's polar radius: 6,357 km.
    ((2.725 x 160.4) / 3.14 x (10^4) - (6,357 x 10^-3) = 1,392,000
    The diameter of the Sun: 1,392,000 km.
    Numbers 3, 6 & 9 - Nikola Tesla
    One Parsec = 206265 AU = 3.26 light-years = 3.086 × 10^13 km.
    The Numbers: 3, 6 and 9
    ((3^6) x 9) - (3.086 x (10^3)) -1 = 3,474
    The Moon's diameter: 3,474 km.
    Now we will use the diameter of the Moon.
    Moon's diameter: 3,474 km.
    (3.474 + 369 + 1) x (10^2) = 384,400
    The term L.D (Lunar Distance) refers to the average distance between the Earth and the Moon, which is 384,400 km.
    Moon's diameter: 3,474 km.
    ((3+6+9) x 3 x 6 x 9) - 9 - 3 + 3,474 = 6,378
    Earth's equatorial radius: 6,378 km.
    By Gustavo Muniz

  • @naisyaramadhiani1077
    @naisyaramadhiani1077 ปีที่แล้ว +1

    Thank you sir excellent lectures🎉

  • @lynx141
    @lynx141 ปีที่แล้ว +3

    The names being mentioned at the beginning-Schrodinger, Heisenberg, Planck, Einstein sends a shiver down your spine when you realise this is cutting edge stuff by some of the most brilliant minds of the scientific community.

    • @schmetterling4477
      @schmetterling4477 ปีที่แล้ว

      It was cutting edge in 1927. That was almost a hundred years ago. Today this level is absolutely trivial.

  • @Kiki-yc5ue
    @Kiki-yc5ue 4 หลายเดือนก่อน

    Grade 10 here, I love this stuff! Happy to learn it

  • @vivekranjan47
    @vivekranjan47 5 ปีที่แล้ว +1

    I LIKE MIT VERY MUCH

  • @amritsarawan.p8086
    @amritsarawan.p8086 5 หลายเดือนก่อน +154

    Anyone from sambucha?

  • @UntakenNick
    @UntakenNick 5 ปีที่แล้ว +6

    I noticed that there are two different courses, from 2013 and 2016.. anyone has and opinion on which one to watch, or to watch first..?

    • @MudahnyaFizik
      @MudahnyaFizik 4 ปีที่แล้ว

      They are the same course. Watch this one since 8.05 and 8.06 is also taught by the same person

  • @JohnVKaravitis
    @JohnVKaravitis 5 ปีที่แล้ว +6

    You can run this at 2X speed and it's still understandable. Compare this with Allan Adams's version of this course.

    • @IamLegend573
      @IamLegend573 4 ปีที่แล้ว

      Which is better btw ?

    • @JohnVKaravitis
      @JohnVKaravitis 3 ปีที่แล้ว +1

      @@IamLegend573 Sorry to take so long to get back to you. I'm reviewing QM this summer. Okay, so Adams is a great guy, and has great presence and delivery. But Zweibach gets into the details a little better, more like my two courses in QM. There are a few "start to finish" QM course playlists here on TH-cam, Zweibach has QM 803.4, .5, and .6. There's Brant Carlson's review of Griffith's text. There are a couple of others. My QM professor told me that yo have to forget something three times before your remember it. So....

  • @rezabahani7437
    @rezabahani7437 4 ปีที่แล้ว +2

    Thank you so much for this opportunity, but, maybe you can share some mathematical physics courses 😶 pls.

  • @colinmaharaj
    @colinmaharaj 7 วันที่ผ่านมา +1

    1:05 Its 2025, I am here.

  • @flygonfiasco9751
    @flygonfiasco9751 5 ปีที่แล้ว +5

    Excellent lecture by an excellent professor.

  • @aiazerchen8005
    @aiazerchen8005 3 ปีที่แล้ว

    我虽然是业余爱好者,但是我仍能看懂大部分内容!
    Although I am an amateur, I can still understand most of the content!

  • @sally-cinnamon
    @sally-cinnamon 4 หลายเดือนก่อน

    Im so done with my life so im thinking of learning this to do something productive.

  • @anishgade4050
    @anishgade4050 4 ปีที่แล้ว

    Thank you MIT

  • @theFitProfessor
    @theFitProfessor 2 ปีที่แล้ว

    What a great Professor!

  • @somphottongkanta2602
    @somphottongkanta2602 4 ปีที่แล้ว +1

    I like to learn from his lecture.

  • @zaharazettira3214
    @zaharazettira3214 3 ปีที่แล้ว

    Thanks for aploding OCW

  • @surojpaul14
    @surojpaul14 4 ปีที่แล้ว

    Thank You Mit😘

  • @MNaumanUllah
    @MNaumanUllah 15 วันที่ผ่านมา +2

    Embracing this in 2025

  • @pankajkumarchauhan
    @pankajkumarchauhan 3 ปีที่แล้ว

    From India I love MIT lectures

  • @manoranjansahu7161
    @manoranjansahu7161 3 ปีที่แล้ว

    Simply Elegant!!!

  • @AhmedSALAH-dz8rx
    @AhmedSALAH-dz8rx 6 ปีที่แล้ว +1

    Thanks a lot MIT

  • @jwzxgo
    @jwzxgo 4 ปีที่แล้ว +1

    16:55 How do you write an operator alone if it contains non-linear component, such as Lu = d(u^2)/dt + 1 ? Does it mean that an operator has to be linear? Thx!

    • @drizzly9936
      @drizzly9936 4 ปีที่แล้ว

      There is no standard way to notate It alone in that case
      But you can still define an operator such as what you did
      And you could still invent new notation in which its specified

  • @mastLight23
    @mastLight23 5 ปีที่แล้ว

    Love you MIT for opencourseware

  • @Diegomoji22
    @Diegomoji22 3 หลายเดือนก่อน

    This is actually a really interesting topic that instead of watching family guy to sleep i will watch this maybe i will wake up smarter