Lecture 1: Classical Field Theories and Principle of Locality

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  • เผยแพร่เมื่อ 3 ม.ค. 2025

ความคิดเห็น • 139

  • @SkeletonBill
    @SkeletonBill 10 หลายเดือนก่อน +264

    To say this is beyond my field of expertise would be an understatement, but it's great that this is freely available for everyone to watch. Sometimes the internet isn't so bad.

    • @gustavonoro
      @gustavonoro 10 หลายเดือนก่อน +7

      Hoped in my country this was more of a thing

    • @sizwemokoane9284
      @sizwemokoane9284 4 หลายเดือนก่อน

      I am a psychology student but I find myself watching this vids so much

  • @Robert.Marshall
    @Robert.Marshall 10 หลายเดือนก่อน +114

    This course is beyond my current knowledge, but something was said during the very helpful intro. Hong talked about the importance of doing all problem sets to gain intuition of the subject, and that intuition will help learn and understand as the course progresses. In my current classes, I've been trying to read, take notes, and look at other sources for explanations on topics. But what he said made me realize that I am not doing the most important actions that will help me learn and master the subjects and courses I'm taking. So I thank him for that

    • @raspian1019
      @raspian1019 10 หลายเดือนก่อน +6

      Thanks for highlighting this.

    • @anonymoushawk962
      @anonymoushawk962 4 หลายเดือนก่อน +1

      This was my mistake as an undergrad taking upper div physics… I was just doing the assigned problem sets along with many explainers and such… later, after doing terrible in electrodynamics and scraping by with a acceptable grade for into quantum… I realized that doing ALL the problem sets introduced as you read section (for griffiths for both) is the best way to get through the class and would’ve been less stressful… they introduce subtle things you need to know throughout all the problems… so just doing to problem sets always had me unable to start the problem becuase I was skipping material that gradually made the other ones easier to figure out… these classes aren’t like the physics classes most people take where the problems are pretty much repetitive without much mathematical critical thinking… I’m going over my intro quantum book again but this time I don’t have time restraints and stress keeping from skipping problems… I feel much more satisfied with my learning… this brings up a gripe I have with college… the short time you get to gain intuition for a new mathematical landscape with the stress of tests and other classes really hindered my learning and my satisfaction for it… it didn’t feel like it was about learning… it felt like it was just about getting through it all without being give enough time to unpack the mathematical subtleties I’ve never encountered before.

  • @cr4601
    @cr4601 5 หลายเดือนก่อน +13

    “Anything is not difficult if you learned it in the right way”. “Whenever you think it’s too hard, the reason might be that you have to change your perspective”.
    Such openness and optimism can drastically alter the rate and thoroughness of learning. It’s great that the lecture is presented by someone who has confidence in the ability of others to comprehend the subject matter. We often overcome challenges in learning when we step back and attempt a different approach. To learn is to change the form of our minds and perceive things in a novel manner. It’s great to have this content for everyone here to view.

  • @muditchaturvedi5276
    @muditchaturvedi5276 9 หลายเดือนก่อน +8

    I remember last year I missed lectures of quantum field theory and here it is now !
    Thnx MIT !

  • @kim.serenaemery7569
    @kim.serenaemery7569 9 หลายเดือนก่อน +4

    I want to say that Hong’s explanation is quite soulful. it is detailed, also helpful to understand. He delivers not only that knowledge but the way to understand it. God bless MIT and Dr. Hong Liu.

  • @syed.siraj555
    @syed.siraj555 5 หลายเดือนก่อน +5

    MIT OCW has become an invaluable tool for students and educators alike, offering access to a wide range of subjects. In response to the growing demand from physics and mathematics students, we strongly encourage the addition of a course on Mathematical Methods for Physics. Such a course would greatly benefit those seeking to deepen their understanding of the mathematical techniques essential for tackling complex problems in physics. We sincerely appreciate MIT OCW's commitment to open education and eagerly anticipate the inclusion of this course in their already impressive catalog.
    Thank you

  • @Tom-sp3gy
    @Tom-sp3gy 10 หลายเดือนก่อน +32

    Lecture begins at 14:58

    • @lukas2090
      @lukas2090 10 หลายเดือนก่อน +1

      Thx🎉

  • @zacmilne9423
    @zacmilne9423 10 หลายเดือนก่อน +27

    Thoroughly enjoyed this. Dr. Liu clearly has empathy for his students as well as an intimate grasp on this difficult yet beautiful subject.

  • @erikisberg3886
    @erikisberg3886 10 หลายเดือนก่อน +7

    Most excellent recap I have seen on these concepts! It is a long time since my classes at U. Also followed prof. Zweibach QM courses on MIT OCW some years ago, I highly recommend those as well. MIT OCW is a great resource!
    Will follow the rest of this series.

  • @etc4xg
    @etc4xg 13 วันที่ผ่านมา

    Incredible first lecture. Can't wait to watch the entire course!

  • @dw96969
    @dw96969 10 หลายเดือนก่อน +12

    Finally !!! I hope we also get the second and third part in a few months. OCW is the best

    • @cycklist
      @cycklist 10 หลายเดือนก่อน

      The whole course is available now.

    • @dw96969
      @dw96969 10 หลายเดือนก่อน +2

      @@cycklist I was talking about second and third courses in this series, QFT 2 and QFT 3 , their lecture notes and problem sets are on OCW but not lectures yet

    • @kw7807
      @kw7807 10 หลายเดือนก่อน

      @@dw96969Relativistic Quantum Field Theory 3 is available.

    • @naghdezartoshtian
      @naghdezartoshtian 10 หลายเดือนก่อน

      @@kw7807 where ? also videos ?
      Could you share the link please ?

  • @allensharples3553
    @allensharples3553 10 หลายเดือนก่อน +7

    Thank you for sharing your expertise.

  • @JoshiaSeam
    @JoshiaSeam 6 หลายเดือนก่อน +4

    MIT is so goated for making this free

    • @DistortedV12
      @DistortedV12 หลายเดือนก่อน

      yes this is probably the most difficult course in the world for free

  • @LocalEquilibrium
    @LocalEquilibrium หลายเดือนก่อน

    Perfect lecture set!

  • @albertmendoza8330
    @albertmendoza8330 2 หลายเดือนก่อน

    As an aspiring quantum field theorist in a masters program, thank you so much!

  • @naghdezartoshtian
    @naghdezartoshtian 10 หลายเดือนก่อน +16

    Please also upload QFT II and QFT III in the next semesters

  • @brianchoi4542
    @brianchoi4542 10 หลายเดือนก่อน +1

    Great lecture. Thanks.

  • @gulinasirova3257
    @gulinasirova3257 10 หลายเดือนก่อน +47

    sorry clicked by mistake while being high, this is dope

    • @sovereigncitizen3633
      @sovereigncitizen3633 10 หลายเดือนก่อน +3

      Haram

    • @АбуталифАкылбеков
      @АбуталифАкылбеков 7 หลายเดือนก่อน +12

      That's why we tell kids to stay away from light drugs - they inevitably lead to heavy ones. First, you try weed, and then you do not notice how you went into the quantum field theory.

  • @Rogue_Terminator
    @Rogue_Terminator 9 หลายเดือนก่อน +3

    Please also record the lectures of the course on QFT II as well.

  • @howlpendragon1460
    @howlpendragon1460 10 หลายเดือนก่อน +11

    starts @14:40, you' re welcome

  • @henryvoigt4791
    @henryvoigt4791 8 หลายเดือนก่อน

    MIT, thank you for this refreshing lecture.

  • @yourlordandsaviouryeesusbe2998
    @yourlordandsaviouryeesusbe2998 10 หลายเดือนก่อน +2

    Holy shit. Thank you so much!

  • @reinerwilhelms-tricarico344
    @reinerwilhelms-tricarico344 หลายเดือนก่อน

    Looks very promising: So far one can actually read what he writes on the blackboard. That's a good sign.

  • @Ayso
    @Ayso 3 หลายเดือนก่อน

    Very helpful, thank you

  • @LydellAaron
    @LydellAaron 10 หลายเดือนก่อน +2

    I'm excited to learn from this series and Dr. Hong Liu. I think you can use quantum field theory to understand human behavior and dynamics too. Any system which exhibits quantum behaviors, traits and interactions.

  • @jiyoungpark6233
    @jiyoungpark6233 10 หลายเดือนก่อน

    oh, thank you, so much, for wonderful lectures, dear Professor.
    what i'm thinking recently is i'm going through an era in which i have to rethink if everything's correct or not, on my side...hope everyone is well...🥰

  • @ninderPB
    @ninderPB 10 หลายเดือนก่อน

    Mit lectures are treat to watch

  • @watchingvideos9871
    @watchingvideos9871 10 หลายเดือนก่อน +1

    Thank you so much

  • @swapnil72
    @swapnil72 10 หลายเดือนก่อน

    Post Covid people came to realized about true powers of open source, actually people knew it way earlier but people have now started to harness the powers of true open source, open source is not just idea, or concept, it is the real soul of development.

  • @abdatmohammed5112
    @abdatmohammed5112 10 หลายเดือนก่อน +4

    i waited so long for this , thanks MIT ❤ god bless you

  • @RagHelen
    @RagHelen 10 หลายเดือนก่อน +4

    When the Phi looks like a marshmellow on a stick, you are in the realms of physics.

  • @86congtymienbac80
    @86congtymienbac80 10 หลายเดือนก่อน +2

    It seems that Professor Sunil Mukhi is also developing something about field theory. The language he used was quite similar to Professor Hong Liu.

  • @Unpug
    @Unpug 10 หลายเดือนก่อน +2

    Finally it’s time for relativistic qft!!

  • @tristandevignemont1291
    @tristandevignemont1291 4 หลายเดือนก่อน

    I clicked on this randomly because why not… this is AWESOME. I guess I just became a beginner in quantum stuff… Thank you YT algorithm! Can’t wait to get to shroddinger (really have no idea how that maths out…) Honestly I’m shocked by the amount of free classes you can take… what’s the point of going to MIT now?

  • @TomajJavidtash
    @TomajJavidtash 6 หลายเดือนก่อน

    Bless you 1:04:35

  • @Derek_Bell
    @Derek_Bell 10 หลายเดือนก่อน +1

    Thank you so much for this

  • @Mrosen7542
    @Mrosen7542 6 หลายเดือนก่อน

    Thank you.

  • @POISON_616
    @POISON_616 10 หลายเดือนก่อน

    Thanks! ❤

  • @ranierroderick1685
    @ranierroderick1685 10 หลายเดือนก่อน +2

    language of the gods

  • @steveo601
    @steveo601 10 หลายเดือนก่อน

    This is beyond my comprehension but beautiful nonetheless. Really cool to be able to see lectures from the World’s great Universities.

  • @UnforsakenXII
    @UnforsakenXII 10 หลายเดือนก่อน +6

    oi, wish this was available literally 5 years ago lol.

  • @jkcxui
    @jkcxui 7 หลายเดือนก่อน

    Good. Thank for your video from korea

  • @engsherif4657
    @engsherif4657 9 หลายเดือนก่อน

    Good profesor thanks from egypt

  • @kayeassy
    @kayeassy 9 หลายเดือนก่อน +1

    43:33 can someone please elucidate the difference between labels and dynamical variable.

    • @avz1865
      @avz1865 6 หลายเดือนก่อน +1

      The point is that we don't think of x as being the concrete position of some particle, say, which varies with time. x as a label is not a function of time, it is merely an index which tells us which point of the field we're looking at.

    • @lepidoptera9337
      @lepidoptera9337 6 หลายเดือนก่อน

      He is pointing out that the problem occurred in classical physics and it has nothing to do with quantum field theory. In classical physics we can make repetitive measurements on the same classical body at spacetime points (t0, x0), (t1, x1) etc.. The theory then translates that into a dynamical path variable x(t), even though that is NOT what we are actually observing. In modern physics we have to let go of the x(t) path completely. It simply doesn't exist.

  • @JenniferTopas
    @JenniferTopas 9 หลายเดือนก่อน

    My man Hong went from walking pace to warp in less than a Planck unit of time.

  • @wcottee
    @wcottee 10 หลายเดือนก่อน

    I have trouble balancing my check book but I will listen to this course (and not understand anything :)

  • @akashdebnath1142
    @akashdebnath1142 10 หลายเดือนก่อน +6

    "Education is only way of live a peaceful life"
    -anonymous

    • @balls4644
      @balls4644 10 หลายเดือนก่อน +1

      cope

  • @samirenono4641
    @samirenono4641 10 หลายเดือนก่อน

    Thank s. Need more cours

  • @SatyamKumarSingh-bj3be
    @SatyamKumarSingh-bj3be 10 หลายเดือนก่อน +6

    I can't believe man hong liu the god is here🎉

    • @sovereigncitizen3633
      @sovereigncitizen3633 10 หลายเดือนก่อน +2

      La ilaha ilallah (There is no God, but the One ☝️ God).

    • @deveshverma9125
      @deveshverma9125 5 หลายเดือนก่อน

      Nice joke​@@sovereigncitizen3633

    • @alamgirkarim4562
      @alamgirkarim4562 4 หลายเดือนก่อน

      True bro

  • @aneudisjavierbrito5775
    @aneudisjavierbrito5775 10 หลายเดือนก่อน

    magnificent❤

  • @chrispacito3248
    @chrispacito3248 8 หลายเดือนก่อน

    thanks for the videos!
    any chance at getting a quantum field theory 2 and 3 uploaded?

  • @javierrendon2194
    @javierrendon2194 7 หลายเดือนก่อน

    Does anybody know if prof. Liu teaches the second course on QFT?, and if so, are there plans to publish that second course on youtube?

    • @mitocw
      @mitocw  7 หลายเดือนก่อน

      Here's what we have by Prof. Liu: ocw.mit.edu/search/?q=Prof.+Hong+Liu. Best wishes on your studies!

    • @javierrendon2194
      @javierrendon2194 7 หลายเดือนก่อน

      @@mitocw Thank you very much MIT

  • @equaliser2265
    @equaliser2265 10 หลายเดือนก่อน +7

    Sorry I didn't get that, can you start again slowly.

  • @nvjt101
    @nvjt101 8 หลายเดือนก่อน

    Hi MIT please upload undegrad physics core ❤

  • @ccchen3535
    @ccchen3535 10 หลายเดือนก่อน

    1:05:06 What does the \partial ^ \mu mean?

    • @EdwinSteiner
      @EdwinSteiner 10 หลายเดือนก่อน

      \partial^\mu (superscript \mu) is standard notation for the contraction of the spacetime derivatives \partial_
      u with the inverse g^{\mu
      u} of the spacetime metric. In more words: \partial_
      u (subscript
      u) are just the derivatives with respect to the (usually 4) spacetime coordinates, i.e. \frac{\partial}{\partial x^
      u}. Concretely, \partial_0 is the time derivative, \partial_1, _2, _3 are the spatial derivatives. To get the upper index, you need to contract with the inverse of the metric: \partial^\mu = g^{\mu
      u} \partial_
      u. As QFT is usually done in the context of special relativity in flat spacetime, the metric (and its inverse) are just diagonal matrices with either (−1, +1, +1, +1) or (+1, −1, −1, −1) on the diagonal, depending on the conventions you use. So in the end \partial^\mu is just +/− \partial_\mu, where it depends on the conventions whether the time-derivative or the spatial-derivatives get the minus sign.

    • @ccchen3535
      @ccchen3535 10 หลายเดือนก่อน

      @@EdwinSteiner Thank you very much!

  • @injesusname3732
    @injesusname3732 4 หลายเดือนก่อน +2

    watch at 3x speed

  • @maurocruz1824
    @maurocruz1824 2 หลายเดือนก่อน

    Mental notes:
    - Formulate every difficulty in terms of quantum mechanics (for example heisenberg picture)
    - Any formalism in physics, no matter how abstract it is, it was always designed to solve some concrete physical problems
    and physical questions, very concrete physical questions. And if you understand what kind of concrete physical questions
    quantum field theory was designed to solve, then that can give you a very good perspective.
    -So when you do your Pset, when you look at the examples in the class, you should always ask yourself afterwards, say, after you have done your Pset problems, always look back at that problem. Say, what did I learn from this problem, OK? And just think through it again. Think through what you learned from that problem again. And that is a very good way to help

  • @ZennExile
    @ZennExile 10 หลายเดือนก่อน +2

    So if I add MSG, I can theoretically taste it later if I lick the space within its propagation window? I think I am pick'n up what you are put'n down.

  • @pasavant
    @pasavant 10 หลายเดือนก่อน +1

    Is this the thing about the cat in the box?

    • @86congtymienbac80
      @86congtymienbac80 10 หลายเดือนก่อน +2

      No! it's the theoretical physicist sitting in a box and thinking

    • @EdwinSteiner
      @EdwinSteiner 10 หลายเดือนก่อน

      No, it's the thing about infinitely many cats in infinitely many boxes.

  • @BuleriaChk
    @BuleriaChk 10 หลายเดือนก่อน

    What happened to
    L = T - V
    H = T + V
    ??????

    • @andrewzhao1976
      @andrewzhao1976 10 หลายเดือนก่อน +2

      Simply the Lagrangian and Hamiltonian mechanics my friend. I think you should first catch up on classical mechanics and then quantum mechanics before taking this class.

    • @volcanic3104
      @volcanic3104 10 หลายเดือนก่อน

      In general, L and H do not follow the form you provided

  • @naghdezartoshtian
    @naghdezartoshtian 10 หลายเดือนก่อน

    Niiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiice

  • @NegashAbdu
    @NegashAbdu 10 หลายเดือนก่อน

    That was simple 😅!

  • @冠年紀
    @冠年紀 10 หลายเดือนก่อน

    大家認為微積分的符號以及意義有瑕疵嗎?

  • @homenepal6549
    @homenepal6549 10 หลายเดือนก่อน

    Why c equal to one?

    • @EdwinSteiner
      @EdwinSteiner 10 หลายเดือนก่อน +1

      Because the numerical values of dimensionful constants like c and h-bar depend on the units of measurement you choose. Since units of measurement are arbitrary conventions, anyway, you simply pick your units of measurement such that c = 1 (and usually also h-bar = 1) in those units. This way you get much simpler formulae.

  • @blazed-space
    @blazed-space 10 หลายเดือนก่อน +1

    One day I’m going to be able to use all this stuff I learn 😂 either that or I’ll end up begging for money “will practice theoretical physics for food”

  • @Chiavaccio
    @Chiavaccio 9 หลายเดือนก่อน

    👏👏👏💯🔝

  • @BaccaratKingmaker
    @BaccaratKingmaker 9 หลายเดือนก่อน +1

    How to invest Real Estate: Location... Term, Condition, Price ? Bacccarat Strategy...

  • @AlonsoRules
    @AlonsoRules 10 หลายเดือนก่อน +4

    A lecture like this is why I gave up on Physics after one semester at University

  • @boldjawad
    @boldjawad 10 หลายเดือนก่อน +1

    Only here to see how he wrote on the top of the board

  • @BuleriaChk
    @BuleriaChk 10 หลายเดือนก่อน +2

    Locality implies continuity as subjectively experienced on the surface of the earth at 12 noon in the Astrodome on a Spring morning.
    General Relativity is a local theory of surfaces (a black hole is a perfect, non-radiating sphere, where all radii of curvature meet at from opposite points at the center. But vectors do not have a common origin by Fermat's Last Principle for n=2
    c = a + b
    c^n = (a+b)^n = a^n + b^n+ f(a,b,n)
    c^n = a^n + b^n iff f(a,b,n) = 0
    f(a,b,n) 0
    c^n a^n + b^n QED
    (This was actually proved by a math "C" student within two weeks after Fermat's expression was published, but then the men in white coats took him away,m never to be heard from again)
    Note that for n=2, Pythagorean theorem is wrong (and thus, vectors, which are affine - have no common origin - i.e., are in principle not local) Each vector has its own coordinate system ( which is why the trace of the relativistic field tensor is zero, meaning nothing exists, as in the Pauli matrices - the foundation of SU(2). Note that SU(2) is a group that only has one operator - mutiplication, but that two elements must exist (by addition) in order for multiplication to take place at all (Russell's Paradox means 1^2 1).
    There is much, much more to this story, but I don't have the space-time to write it here. I've been kicked off most of the classical websites, but I am on physics.org with links to pdf's.
    "There is Me and Thee, but I'm not altogether certain about Thee...."
    and, finally,
    "Just because you're schizophrenic doesn't mean that the Universe isn't a figment of your imagination"
    Equations to follow only if you send beer and pizza. "Drink your Beer and Eat your Pizza" - Zen Koan from south Chicago....

  • @SphereofTime
    @SphereofTime 10 หลายเดือนก่อน

    10:09

  • @penalver7839
    @penalver7839 10 หลายเดือนก่อน

  • @선플라워-s3u
    @선플라워-s3u 10 หลายเดือนก่อน

    Square viewless..rate..🤔
    General thought view..not check..

  • @liljimmygreen
    @liljimmygreen 10 หลายเดือนก่อน +3

    Elon I know your lurking here good day to you sir.

    • @EdwinSteiner
      @EdwinSteiner 10 หลายเดือนก่อน +1

      Nah, he's too busy X-crementing.

  • @RockPaperScissor267
    @RockPaperScissor267 10 หลายเดือนก่อน +2

    but lagrangian and Hamiltonians are in economics

  • @SphereofTime
    @SphereofTime 10 หลายเดือนก่อน

    0:10

  • @men-chuenhuang5256
    @men-chuenhuang5256 10 หลายเดือนก่อน

    Hong seemed to only read from his notes. 😢

    • @Physixfixer1
      @Physixfixer1 9 หลายเดือนก่อน

      😂but am sure it you're asked to read the same 😂😂😂😂you may get stuck

  • @NowisEvollovetion
    @NowisEvollovetion 10 หลายเดือนก่อน +1

    The original state prior to existence forming is the state known as 'Being'. Logically, it simply has to 'Be' in order for everything else to then 'Be Able To Come Into Being'. But, who's 'Being' is it? That is the intelligent question. And the answer to that question is, 'It Is My Being'. The 'Being' part of the 'Human Being' now reading these words. You know, the 'Being' part of every 'Human Being' that coincidentally always gets ignored. Our 'One Common Ground'. Best wishes.

    • @sovereigncitizen3633
      @sovereigncitizen3633 10 หลายเดือนก่อน +1

      Allahu Akbar!

    • @NowisEvollovetion
      @NowisEvollovetion 10 หลายเดือนก่อน +2

      @@sovereigncitizen3633 Yes. That original 'Unmoving State' that some call 'God'. Best wishes 🙏

    • @sovereigncitizen3633
      @sovereigncitizen3633 10 หลายเดือนก่อน

      @@NowisEvollovetion The Original existence that has no beginning and no end. The necessary existence that all contingent existences depend upon to exist in the first place.
      That necessary existence is Allah(The God). The Creator, the designer, The sustainer of all existences.
      None has the right to be worshipped besides this necessary existence Allah SWT. Allah is the only One ☝️ with the right to legislate for Allah’s creation.
      Allahu Akbar!!!

    • @NowisEvollovetion
      @NowisEvollovetion 10 หลายเดือนก่อน

      @@sovereigncitizen3633 And yet. In that state prior to existence forming there is 'No Existence'. There is 'Absolutely Nothing' the 'Source Of Everything'. Best wishes.

    • @sovereigncitizen3633
      @sovereigncitizen3633 10 หลายเดือนก่อน

      @@NowisEvollovetion How can something come from nothing? How can existence come from non-existence?

  • @kailashsingh9737
    @kailashsingh9737 10 หลายเดือนก่อน

    Very beautiful sweet sir ❤❤❤❤❤

  • @RidleyHolmes-sr2tw
    @RidleyHolmes-sr2tw หลายเดือนก่อน

    I graduated from MIT but I have to admit I cheated. A lot.

  • @BuleriaChk
    @BuleriaChk 10 หลายเดือนก่อน

    If all you're introducing is the derivative, then nothing exists. (An element can't change if there is no element)
    The traces of the relativistic Field Tensor and the Pauli matrices are all zero, which means nothing exists locally.
    There are no negative numbers: -c = a-b, b>a iff a = b-c, a+0 = a, a-a = 0
    If there are no negative numbers, there are no imaginary numbers.
    del X B = 0, means the coordinate change dB from
    B = 0 to B = B means that B = 0 for any coordinate system.

  • @mikewei2619
    @mikewei2619 10 หลายเดือนก่อน

    中央量子場小組需要台端

  • @DistortedV12
    @DistortedV12 หลายเดือนก่อน

    this is probably thwe most difficult class in the world

  • @finn6364
    @finn6364 7 หลายเดือนก่อน

    Ngl i thought he Said he was Hung xD😅😂

  • @joelwillis2043
    @joelwillis2043 10 หลายเดือนก่อน

    ehh I'll just stick to pure math

  • @davidc5191
    @davidc5191 9 หลายเดือนก่อน

    So instructors are still using chalkboards today, and not powerpoints!? Or at least interactive whiteboards?

    • @lepidoptera9337
      @lepidoptera9337 6 หลายเดือนก่อน

      Some professors were teaching with overhead projectors even 50 years ago. It didn't make the lectures any better. What is important is what you teach, not how.

  • @longxianghuang9978
    @longxianghuang9978 8 หลายเดือนก่อน

    sad to say but, US top universities especially in stem sector, are dominated by chinese and indian, immigrant or not

  • @yhuveys1216
    @yhuveys1216 10 หลายเดือนก่อน

    Teacher can not write without paper😂😂😂

  • @alamgirkarim4562
    @alamgirkarim4562 4 หลายเดือนก่อน

    He mumbles a lot