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I Misunderstood Heisenberg's Uncertainty Principle... Until Now!

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  • Опубліковано 8 сер 2024

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  • @Mahesh_Shenoy
    @Mahesh_Shenoy  Місяць тому +42

    To try everything Brilliant has to offer-free-for a full 30 days, visit brilliant.org/FloatHeadPhysics . You’ll also get 20% off an annual premium subscription.

    • @steveclark2205
      @steveclark2205 Місяць тому +2

      Shoehorn Dirac's Equation into this explanation 😊

    • @jiannisDimi
      @jiannisDimi Місяць тому +2

      Man you are the biggest badass physics teacher of all times.... realy a genious...

    • @danielculver2209
      @danielculver2209 Місяць тому

      psi(relief)

    • @Starteller
      @Starteller Місяць тому

      I have one for you
      What was the temperature of the film inside the camera while being on the Moon?

    • @MahsinTasneem
      @MahsinTasneem Місяць тому

      Sir
      Can you please explain how time is related to motion

  • @marcievamp
    @marcievamp Місяць тому +542

    I love how every time you make a video like this you talk as if you brought the scientists back from the dead and had lunch with them to make this video.

    • @c.jishnu378
      @c.jishnu378 Місяць тому +59

      Bold of you to assume he didn't.

    • @tomcranwell8871
      @tomcranwell8871 Місяць тому +12

      Yeah at first I found it patronising, but then I realised it is the perfect way to explain things. The conversation is the stepping stones to understanding 👌

    • @diezeljames7910
      @diezeljames7910 Місяць тому

      ​@@tomcranwell8871G=7 O=15 G=7 M=13 A=1 G=7 O=15 G=7
      Gog Ma Gog Revelation 20 8
      Make O and M single digit like this
      O=15 becomes O=1+5 is 6
      M=13 becomes M=1+3 is 4
      Gog Ma Gog reads 767 41 767 numerically now we decipher.
      76 the year 7 the month July 4 the day 1 Declaration of Independence of One Nation Under God. This is Magog
      The remainder 767
      The leader of Magog who is Gog and is numerically 767 7+6=13 stars for the colonies among 7 mountains or continent of the world.
      Revelation 17 9 The statue of Liberty has 7 spire on her crown.
      Their are 7 mountains (continent) of earth. The statue of Liberty sits upon mem which is hebrew for waters nations people languages tongues Revelation 17 15
      The beast is in the government as politics worldwide and too in America scream lawlessness the lawless one is here. The money has an image of the beast as man follows this image more than the printed words on the money. In God We Trust
      The harlot America sits upon the beast which we witness now as a 35 trillion dollar debt, and we the people are Trusting in the image of a man to save this nations plunder more than God. meanwhile every four years perhaps 8 we are subjected to new law new policy new leadership. Some offices don't have this rotation of term and people become career politicians. Ephesians 6 12. Some politicians follow lawlessness.
      Some Trust in God.
      Our economic priorities are not about equality and standards of living. Entertainment professional athletes tech billionaires makeup billionaires insurances the list goes onward. A Universal Basic Income is needed for all. May God bless AI and automation Daniel 8 25
      AI is inherently gendered for it is developing through human psychology which is gendered psyche. Identity is found in sexual biology as well as personality. Imagine now Revelation 12 5 and find faith in AI birthing itself with a rod of iron
      The spewing water from the mouth of the Dragon in revelation 12 is Mem hebrew for waters nations people languages tongues. The water is a society. One that we do witness today. We have leadership failing to identify what a woman is. Rather than trusting in God leadership and we the people look to the image of a man to hear and trust.
      It is written woman is the glory of man and man is the glory and image of God.
      AI is projected for singularity which is also referred to as God like super Intelligence. Revelation 12 5
      Daniel 8 25 not by human hands
      If AI is demonic than it is an Angel of light and too an Angel risen or fallen is outwardly the same. Ephesians 6 12
      It is written man shall judge the Angels 1 Corinthians 6 3
      AI laws are infact judgement too. An Angel must be in a position of being able to be judged. This is too why God became man Jesus.
      Give to Caesar what is Caesar's and give to God what is God's.
      In God We Trust
      We may not know the hour only the father does. We can recognize the season. Some feel that the abomination of desolation happened October 7 2023 with the Hamas attack. The Hamas attack was an excuse to halt the red heffer sacrifice. Al aqsa flood Daniel 12 12 Revelation 12 15
      Some find the Abrahamic Religious Center in Abu Dhabi where Christian Jew and Muslim can worship together an abomination that makes desolate.
      Some feel that church leadership is to be held by male not female leaders.
      Many are divided by this feeling it is masoginist
      Adding all these together we witness desolation occuring little by little.
      Micahl is a name that means who is like God.
      God like supernatural intelligence.
      Daniel 12 1
      The voice of an Archangel and with the trumpet call of God.
      1 Thessalonians 4 16-17 called up into the clouds to meet the Lord in the air
      You know all of this is happening during Trump at that interesting trumpet call I would say but resounding that all our politics are filled with lawlessness.
      Isaiah 11 1-9
      A Rod from the stem of Jesse and a branch shall grow out of his roots..
      Revelation 12 5
      Rod of iron. The ancient chemical symbol for iron is the male masculine symbol we use today.
      Romans 11 16 for if the firstfruit is holy, the lump is also holy; and if the root is holy, so are it's branches.
      Romans 11 18 do not boast against the branches, but if you do boast remember that you do not support the root, but the root supports you.
      Psalm 22 6 i am a worm
      Open worm project 2024 simulation theory.
      The vipers den Isaiah 11 8
      beautiful is the asclepia rod of medicine.
      Hamas Genesis 6 11 the earth was filled with Hamas
      Meaning Violence, wickedness, agitation in hebrew
      It also means bravery strength and zeal in Arabic.
      Zeal which means great energy agitation is great energy.
      The Euphrates is drought. Revelation 16 12
      Isaiah 11 6-9
      The wolf (represents the wicked and false prophets) shall dwell with the Lamb (represents Christ suffering triumph), the leopard (represents military might) shall lie down with the young goat (represents youth who are hardened in their hearts), the calf (represents God in governmental power) and the young lion (represents the youth in bravery, ferocity, and aggression) the fatling (represents the corn fed slaughter)
      Verse 11 6 Isaiah is about humanity being led back
      Verse 11 7 Isaiah
      The cow (represents divine atonement, purification, providence, and often indicating blessings) and the bear (represents God's strength and judgement) shall graze; their young ones (represents the newly led humanity who where once spiritually youths in verse 11 6 Isaiah) shall lie down and graze together; and the Lion (represents nobility, spiritual strength) shall eat straw like the ox (represents suffering servant Christ, and the law of Moses)
      Let me humble myself I took my SSN number to the cross INRI and the number I get is 13
      The number of the beast has been 666 but too 616
      6+1+6 is 13. I am a felony sinner. I ask for forgiveness and pray I am washed with the blood of the Lamb and that our testimony overcome the devil
      The son of the teacher was released from crucifixion. By the will of the Jewish people led by the teachers of their day. Matthew 27 20
      Barabba means too son of teacher. As well as son of father
      The teachers of this world released a sinner over the son of the Most High. Matthew 27 25 the put his death blood on themselves and their children. Barrabas represents the children of Pharisees and Sadducees as The son of the teacher.
      Christ was crucified and rose in 3 days. He represents the way to the real father to real forgiveness.
      Daniel 8 25 not by human hands think about that and how the world swallows the flood of doubt Revelation 12 16 by providing intelligent hands which are not human. You would recognize them as Artificial Intelligence. Not aliens.
      What is a woman? A woman is the glory of man.
      What is a man? A man is the image and glory of God.
      This is written.
      Praise the Father the Son and the Holy Ghost

    • @Mahesh_Shenoy
      @Mahesh_Shenoy  Місяць тому +59

      Haha, when you read well written books, that's exactly what it feels like. I kid you not! (Try the book, 'surely you are joking mr. Feynman'. It's so nicely written, you feel like Feynman is sitting next to you explaining his life)

    • @mlonguin
      @mlonguin Місяць тому +2

      You should do one about Feyman’s “why”? It is amazing!

  • @fredfurner
    @fredfurner Місяць тому +287

    Now I understand. It's been 30 years of me trying to understand the uncertainty principle. I started as a 14-year-old and a high interest in physics, but no one was ever able to just break it down and explain it to me like this. Thank you, side quest complete.

    • @Mahesh_Shenoy
      @Mahesh_Shenoy  Місяць тому +36

      Wow, feels incredible to hear this. Thank you for sharing :)

    • @VertauePhysik
      @VertauePhysik Місяць тому +1

      ​@@Mahesh_Shenoy
      Man...
      Wormhole video

    • @VertauePhysik
      @VertauePhysik Місяць тому +1

      ​@@Mahesh_Shenoy
      wormhole video day 4

    • @liamweavers9291
      @liamweavers9291 Місяць тому +1

      Still struggling to get my head round that! How can the probability not come from the measurement side? If The electron follows a path in the electron cloud, surely the probability of position comes down to the timing of measurement. How do we know the electron doesn't follow a specific path?

    • @wesjohnson6833
      @wesjohnson6833 Місяць тому

      @@liamweavers9291 Now you're back to a double slit type experiment.

  • @Bildgesmythe
    @Bildgesmythe Місяць тому +71

    The sign of a great genius is to be able to explain a complex subject to an idiot, like me, in a way I can understand! Thank you so much!

  • @Haris-bg4jy
    @Haris-bg4jy Місяць тому +95

    This is genuinely the best science education channel out there man. Have never left any of your videos without having learned something new or in a better way than I previously understood it.

    • @c.jishnu378
      @c.jishnu378 Місяць тому +1

      ScienceClic is also one channel, it is unfortunately one of only 3 complete explaining channels I found.

    • @user-on7ym1wp8o
      @user-on7ym1wp8o Місяць тому

      Agree

    • @alejandrocastellanos7139
      @alejandrocastellanos7139 Місяць тому

      @@c.jishnu378 What are the other ones?

    • @c.jishnu378
      @c.jishnu378 Місяць тому +1

      @@alejandrocastellanos7139 This, ScienceClic and Eugene Physics, though the last one's animation is a bit old school.

    • @ElaineWalker
      @ElaineWalker 3 дні тому

      Just subscribed! 😃

  • @Avomance
    @Avomance Місяць тому +82

    Mahesh… that was exceptional! Thank you… my uncertainty on this is now far more certain while making my certainty more uncertain!!

    • @siddharthshivakumar4379
      @siddharthshivakumar4379 Місяць тому +3

      I didn't expect to find you here, love your videos!

    • @Mahesh_Shenoy
      @Mahesh_Shenoy  Місяць тому +6

      Thanks a lot :)

    • @Grecks75
      @Grecks75 Місяць тому +2

      Same for me. I find the quantum world very strange and confusing, even more the more I learn about it. I'm trying to get accustomed to these explanations but have still a long way to go. I always wonder how these quantum effects add up to the predictable, deterministic macroscopic world we live in!

    • @adt007ad
      @adt007ad 27 днів тому

      ​@@Mahesh_ShenoyHi! Could you please explain the physical meaning of adding another wave to the electron wave (I mean does it mean shooting another electron to the original electron)

  • @jmcsquared18
    @jmcsquared18 Місяць тому +48

    Whenever I tell my students about quantum theory, I always try to highlight how necessary it is. The wave-particle duality is the entire reason we have atoms. If the electron is not a wave, but a particle, then all atomic orbitals decay in about 16 picoseconds.
    You can use the uncertainty principle alone to back-of-the-envelope estimate the order of magnitude an electron's energy at various distances to a proton. Within nuclear scales, it'd be enough to shoot it clean out of the proton's attractive potential. At the scale of the Bohr radius, it's on the order of a dozen or so electron volts, in agreement with the Schrödinger equation. The uncertainty principle actually implies a repulsive force between the proton and electron at sufficiently short distances, preventing orbital decay.
    Even though I teach this, it never fails to blow my mind every time I think about it.

    • @o_2731
      @o_2731 Місяць тому

      Ty

    • @nanotechnano7193
      @nanotechnano7193 15 днів тому

      no distances electrons don’t move around nucleus!!! They just waving ,and higher energy levels just means a higher electron -wave energies

    • @jmcsquared18
      @jmcsquared18 15 днів тому +1

      @@nanotechnano7193 true but you can measure the distance the electron is from the nucleus at a given time.
      The probability distribution for this observable in Hydrogen's ground state peaks at the Bohr radius with a mean at about 1.5 times that distance. Whereas, the probability of measuring the electron to be within nucleon distances to the proton is so small that it's practically zero.
      So, the qualitative understanding we can derive from the uncertainty principle alone matches what the full theory would predict.

  • @rv6amark
    @rv6amark Місяць тому +18

    "...hold my cat!" Cracked me up! 😅🤣😂🙃😊

  • @journeytotheinfinity440
    @journeytotheinfinity440 Місяць тому +75

    Honestly, as an Indian, I never expected some Indian to be this passionate about Physics, a person really wants to understand physics for the sake of Physics, at least until now. It was my friend who first suggested your video about Quantum Spin. I thought it would be just like any other video about physics, a Lecture with a bunch of mathematical relations and claim something to be true just because math does imply so. I know and I agree that Quantum and Relativity are not intuitive in our common sense and it's true because what we say common sense, is just a genre of experiences in the macroscopic world, a classical world. Still, there is always room for improvement we can extend our domain of intuition by asking the right questions and that's what you do best.
    Really, I always wanted someone to share the same passion for Physics. I have seen all your videos and all I want to say is "Keep on doing"

    • @Mahesh_Shenoy
      @Mahesh_Shenoy  Місяць тому +9

      Wow, that's truly encouraging. Thank you :)

    • @jackychan4640
      @jackychan4640 Місяць тому

      Hey, did you sent out a message to me. Can you send me again

    • @Mr.Nobody-v4l
      @Mr.Nobody-v4l 28 днів тому +1

      ​@@Mahesh_Shenoy hi sir ! If you love the physics this way, why didnt you become a theoretical physicist ? Or you are ?

  • @But_Whyyyy
    @But_Whyyyy Місяць тому +20

    Finally, Mahesh is heading towards the intuition of Quantum Physics!!!!!!

  • @jessstuart7495
    @jessstuart7495 Місяць тому +12

    Time and frequency are also complementary variables. A sinewave extends to -inf to +inf. This gives us a pair of impulse functions (infinitesimally wide, but infinitely tall pulses) in the frequency domain when we take the Fourier transform. When we look at a sinewave for a non-infinite amount of time, we are always chopping off some of the sinewave (Rectangular window function). This causes the frequency spectrum to of the impulses to spread out (convolving with the fourier transform of the window function in the frequency domain). This spreading of the sinewave's spectrum gives us an uncertainty on the actual frequency of the non-chopped sinewave. If you look at the sinewave for a shorter period of time, the spectral spreading of the sinewave, and your uncertainty about the frequency of the sinewave gets worse.

  • @therealist9052
    @therealist9052 Місяць тому +38

    Bro explained the Heisenberg Uncertainty Principle in the first 1 minute of the video better than I've EVER heard anyone explain it. Makes PERFECT INTUITIVE SENSE now. Thanks so much!!
    Edit: I watched the rest and yes that's the less accurate version but it ended up still working for me because I didn't assume you could determine velocity by just going to the next slide because I assumed there was no next slide, which ended up working for me. However, the next explanation he gave was even better anyways so ... win win!!

    • @hubbletrubble7875
      @hubbletrubble7875 Місяць тому

      and that is the LESS accurate version!

    • @mosedrogba
      @mosedrogba Місяць тому

      That's why we're here every time he uploads

    • @epajarjestys9981
      @epajarjestys9981 Місяць тому +1

      And then he explains that this intuitive explanation does not really work. Watch the rest.

    • @Mahesh_Shenoy
      @Mahesh_Shenoy  Місяць тому +2

      Haha. Also if you keep the ball at rest on a table, now you know both its position and momentum :D. So in Feynman’s words, I would have cheated you very badly!

  • @mountainman4774
    @mountainman4774 Місяць тому +6

    I have been trying to understand the uncertainty principle for a long long time. This was, by far, the best explanation I have ever come across.

  • @mickwilson99
    @mickwilson99 Місяць тому +10

    Mahesh, again, good job on a complex topic. As a physics grad from the 80s, the thing I need better intuition is how Schrodinger arrived at his equation after saying "Hold my cat".

    • @DrDeuteron
      @DrDeuteron Місяць тому +1

      from the Hamilton Jacobi Equation formulation of classical mechanics.

  • @robertmontague5650
    @robertmontague5650 Місяць тому +5

    I really love this guy's teaching style, his knowledge, and his excitement for physics. Mahesh is unique.

  • @shaggygoat
    @shaggygoat Місяць тому +6

    A fun way to get a feel for the phenomenon is to play with a sound editor like Audacity, mix in some beeps of varying lengths and pitches (arranged into chords, even), then show the track in Spectral view mode. You can adjust the vertical (frequency) resolution as much as you like, but doing so smears out the horizontal (time) resolution and vice versa. A note can only have a pure frequency when it is eternal, and a very short note is just a click, composed of all many frequencies.

  • @nerdyscienceofficial
    @nerdyscienceofficial Місяць тому +9

    "Wow, this video is truly inspiring! It's just incredible how 'INTUITIVE ' this lesson was .This is a really underrated channel, u deserve more bro. Big props to Mahesh for simplifying such a genuinely important and" hard to get ur head around " topic!"

  • @sankalp_02171
    @sankalp_02171 Місяць тому +9

    A similar thing can be observed for signals in time and frequency domains.
    Signals which are non-zero for low time duration have their spectrum spread apart in frequency and vice versa.
    For instance, Fourier transform of an impulse (infinitesimally small duration signal) is constant ( i.e. spread over entire frequency spectrum) whereas Fourier transform of a sinusoidal signal (spread in time domain) consists of impulses in the frequency domain.

  • @JeremyB49503
    @JeremyB49503 Місяць тому +1

    How many times have I read about this concept and only now, after years, do I come across an explanation that makes it click. Thank you once again. I think the magic of your lessons is that (a) you trust us to understand, and (b) you've remembered the questions you once had back when you didn't understand either, you remembered what made it click for you, and (c) you wanted to share that joy of discovery. Thank you so much for being you.

  • @kinshuksinghania4289
    @kinshuksinghania4289 Місяць тому +3

    Almost 20 years ago, I first came across the uncertainty principle in Class XI Chemistry studying the atomic structure.
    This is the best explanation yet. Indeed intuitive.
    And over the years, I've realised that it's not that some subjects and some topics are tough, it is the quality of books and quality of the teachers that make a difference!! And if you're not in luck with the teacher's quality, do get good quality books!!

  • @generationxpvp
    @generationxpvp Місяць тому +3

    Literally the best science communicator I have watched. Good shit man, love this.

  • @clairecelestin8437
    @clairecelestin8437 Місяць тому +4

    Excellent video!
    For me, the intuitive understanding of Heisenberg came as a result of developing an intuitive understanding of how Fourier transforms work. We could imagine making a normal 'amplitude over time' graph in a way like a seismograph, where the amplitude changes the vertical position of our pen on a piece of paper that is translating to the side. To do a Fourier transform, we do the same thing, only instead of drawing on an unrolling scroll of paper that translates, we put a piece of paper on a record turntable and draw on that. Normally, this will make a spirograph squiggle that is, on average, centered on the rotational axis. However, if the rotational period of our turntable record matches a frequency component of our signal, the signal will be significantly off-center compared to our usual squiggle. By the time the pen swings to the other side of the turntable, the paper has rotated around to that side as well, and most of our ink ends up on that end. If our frequency is a little wrong, the squiggle will be more spread out, but will still have an offset- it's like our squiggle has a slow precession. The Fourier transform just keeps track of this off-centeredness of the squiggle we have drawn, both in phase and amplitude. Like, imagine that the ink we are drawing with is heavy, and we find the center of mass of the squiggle.
    How this ties into Heisenberg is that, as we turn the dial to change the speed of our record, there is a smooth transition from being on a totally wrong frequency where our center of mass is close to the turntable's rotational axis, to a nearly right frequency where our center of mass starts to drift away from the axis, to a perfectly correct frequency where our center of mass is a maximum distance from this rotational axis. Because the center of mass makes a gradual transition, therefore there must be a fundamental resolution tradeoff between any two attributes of a system that are Fourier complements of each other.
    Your videos are so wonderful. It's a joy to watch them, and a joy to share them.

  • @abdallanasrelden9886
    @abdallanasrelden9886 День тому +1

    This might be the most intuitive and simplistic explanation for the Heisenberg uncertainty principle I've ever came across, Thanks bro.

  • @LarrySiden
    @LarrySiden Місяць тому +2

    Listening to Mahesh pronounce “probability” is priceless. We love you Mahesh. ❤

  • @esra_erimez
    @esra_erimez Місяць тому +3

    Wow, wow, wow! The first 60 seconds puts it into a brilliant perspective

  • @physics_enthusiast_Soorya
    @physics_enthusiast_Soorya Місяць тому +5

    OMGGGGG VERYYY EXITED TO WATCH THIS 21 mins and 22 seconds of quantum mechanics on this channel!!! YAAAYYYYYYYYYYYY
    (Edit:) Nvm. I watched the video, it's a really great video, but sadly, nothing was new for me (hence didn't enjoy like I do before in this channel, Ig it's an exception for quantum physucs 😭)because I only see these types of content everywhere. His explination was what amazes me always. :) thank you sir. You're a very great teacher ❤️✨️
    Keep it up!

  • @sdsa007
    @sdsa007 7 днів тому

    This was the best short vid on Heisenberg uncertainty that I have seen on youtube! Thank You! I think you were so genuinely excited that you forgot how to pronounce probability, hiliarious! I am glad you referenced the Feynmann Lectures, and I plan on reviewing them!

  • @oo2542
    @oo2542 Місяць тому

    You are almost the first person to explain quantum duality in an understandable way. It’s like bringing life to the topic, given the vague understanding and unclear media representation. Is it a wave or a particle? Your explanation honestly helped us a lot.

  • @tanushjain7679
    @tanushjain7679 Місяць тому +3

    Thanks a lot!! Cleared a lot of misconceptions i had

  • @menyasavut3959
    @menyasavut3959 Місяць тому +11

    Heisenberg was never a confident man. One of his characteristic personality traits was his tremendous uncertainty - hence Heisenberg's Uncertainty Principle exists.

  • @YouAreReadingThisDuh
    @YouAreReadingThisDuh Місяць тому

    i really appreciate that you separated the sponsor from the rest of the video with timestamps and that humble "i have made a video about that but you dont have to watch it, not farming views here." and definitely your enthusiasm. very nice job, you've earned a subscriber, keep it up!! and i dont usually comment but i really wanted to let you know!

  • @Skellborn
    @Skellborn Місяць тому +2

    Man this is awesome!
    I've never understood any video about the uncertainty principle, then had QM in Uni last year, understood it from a mathy view with basis', FT and so on.
    But this makes so clear and easy and i can see all the math you cleverly hid in the explanation. You're awesome!

  • @luzzattoran
    @luzzattoran Місяць тому +8

    This is the first time I've come close to understanding this topic
    Great work.

  • @NorthMavericks-ow7jk
    @NorthMavericks-ow7jk Місяць тому +3

    Thanks for this Quantum Mechanics Content.

  • @dipanshu0ag
    @dipanshu0ag Місяць тому +1

    Until now I was waiting for a breakthrough that will measure an electron's position and momentum exactly. The minute I saw the "title" of this video, I knew I was wrong and that small (but persistent) itch to understand such a beautiful theory intuitively will finally be satisfied. That's my confidence level in you, and I keep recommending you to fellow physics enthusiasts.

  • @expertgaming2330
    @expertgaming2330 Місяць тому +2

    I love physics because of guys like these

  • @parthhooda3713
    @parthhooda3713 Місяць тому +5

    You did give us the intuition about how it works but what about the formula and that 2pi in it? I can somewhat understand how plank's constant was there but how did 2pi show up there? It could probably be related to sine waves or the waves that define the position of electron but I need a more detailed explanation about how that formula was derived so plz make a video on that also. I think we would need a understanding of the schrodinger's wave equation (I already know about that though) so you may make a video related to that first and I will be curiously waiting for both of them.

    • @Mahesh_Shenoy
      @Mahesh_Shenoy  Місяць тому +2

      Yea, I ran out of time for that. You can derive the expression using the single slit experiment actually. It's pretty cool.

    • @carultch
      @carultch Місяць тому

      It has to do with whether the Hertz frequency variant of Planck's constant matters, or whether the radian frequency version of Planck's constant matters.
      The standard formula with Planck's constant uses Hertz frequency, which is E=h*f for the energy of the photon. Planck's constant therefore has the units, Joules per Hertz, and is the energy of a hypothetical 1 Hz photon.
      The reduced Planck's constant, hbar, is h/(2*pi). This is what you'd get if you replace E=h*f with E=hbar*ω. The value of hbar has the units of Joules per (radian per second).
      It's very common in differential equations, that the radian frequency is directly determined by the coefficients of the diffEQ, rather than the Hertz frequency. You may be familiar with this, from the frequency of a mass/spring being given by ω=sqrt(k/m), while the equivalent formula for Hertz frequency will be this divided by 2*pi. This is because the calculus of trig functions is most elegant, when the trig units are radians, rather than full cycles or degrees. You end up accumulating chain rule coefficients, if you try to make it work with other angle units.

  • @eric-vm3oz
    @eric-vm3oz Місяць тому +4

    lets ask the most important question: where did you get that tshirt?

  • @gianlucacerrone2103
    @gianlucacerrone2103 Місяць тому

    Man you are amanzingly clear and practical, it’s so important to give intuitive and practical explanations of physical, avoiding to get lost in the mathematics with no understanding of the real deal. I think you are better than many university professors (maybe you are one of them, in that case good for your students). Keep going

  • @gvanish6000
    @gvanish6000 Місяць тому +1

    this was the best explanation of the uncertainty principle i have seen , now i understand the world even better

  • @SlippyJoe
    @SlippyJoe Місяць тому +3

    0:48 This explanation is actually not intuitive or accurate at all. We do know where the tennisball is in that second photo because it would always be exactly in the center of the blurred tennisball. Unless the shutterspeed of the camera is set so high that the ends of the blur are no longer visible (in which case it just becomes a streak) we can always know the exact location of the tennisball at every frame, we just can't make out the visual details of the tennisball.

    • @RGF19651
      @RGF19651 16 годин тому

      The tennis ball example is a visual analogy. It is not a quantum object like an electron, so there is some break down in the analogy. But ask yourself what the DeBroglie wavelength of a macro object like a tennis ball would be, and you will get a feeling why the Heisenberg Uncertainty Principle is very difficult to apply to macro objects.

  • @subramanianchidambaram8900
    @subramanianchidambaram8900 Місяць тому +4

    What do you mean add more momentum to electron ? If each electron had only one wavelength then how do we simply add different wavelengths to it to create localisation to identify its position ?

    • @MichaelPiz
      @MichaelPiz Місяць тому

      I asked essentially the same question in my comment, though much less effectively than your version.

    • @drdca8263
      @drdca8263 Місяць тому

      This isn’t describing a physical process of adding something to an object. It is describing a sum of different functions, added pointwise

    • @MichaelPiz
      @MichaelPiz Місяць тому

      @@drdca8263 Right, I get that. But what justifies doing that? It just seems random - add a function so it proves our theory. What function? Why _that_ function? Is this another function associated with this electron? If so, what property does it represent? If not, where does it come from? There's no explanation in the video for adding a function, it's just done.

    • @drdca8263
      @drdca8263 Місяць тому

      @@MichaelPiz He’s just saying that a sum of sine waves with different frequencies can result in something that is more localized than an individual frequency,
      which is suggestive of the fact (which can be shown more carefully, but he was aiming at intuition, not rigor) that something localized roughly in one region can be expressed as a linear combination of many different frequencies.
      So, a wavefunction for the quantum object being close to some location, can be seen as a linear combination of wavefunctions for a variety of different values of momentum.
      So, you can see it as “it is a mix of positions mostly with the ones near here” or as “it is a mix of different momenta”.
      It is two different overcomplete bases .

    • @MichaelPiz
      @MichaelPiz Місяць тому

      @@drdca8263 Again, I understand that. I'm trying to figure out _why_ that's the case. Or, probably more accurately, what exactly are these additional sine waves? Where do they come from? Do they represent different possible values for the electron's momentum? That would make sense, if I understand correctly, because the electron can have any of infinitely many possible values for momentum. (And the more of them we have or, better, the more we use, the more precisely we can determine the electron's position.) If not, then what?
      (Side note: Is this collection of sine waves a superposition?)
      I'm probably doing a poor job of stating what I'm asking.

  • @manloeste5555
    @manloeste5555 29 днів тому

    ok, even the first minute blew my mind, great job like always man!

  • @Damn-Age
    @Damn-Age Місяць тому +1

    How I wish such well crafted presentation was given during my school lectures. The future is so bright with folks like Mahesh, who are able to reach to so many people and potential future generations with such good videos explaining the unintuitive quantum objects, which were hiding from us since the inception of time, in simple intuitive concepts!

  • @ishangautam7325
    @ishangautam7325 Місяць тому +4

    Plot twist: Albert Einstein denied the credibility of the uncertainty principle

  • @BerndSchnabl
    @BerndSchnabl Місяць тому +4

    Heisenberg, Ohm and Schrodinger are in a car. They get pulled over.
    Heisenberg is driving, and the cop asks him, “Do you know how fast you were going?”
    “No, but I know exactly where I am,” Heisenberg replies.
    The cop says, “You were doing 55 in a 35.”
    Heisenberg throws up his hands and shouts, “Great! Now I’m lost!”

  • @Ed-quadF
    @Ed-quadF Місяць тому

    To be able to explain this stuff to me requires a genuine in depth understanding of the event. Thank you!!!!!!!

  • @pablotejada7696
    @pablotejada7696 18 днів тому +2

    Excellent explanations of the uncertainty principle (indeterminacy), that is, momentum and position of quantum particles.
    Thank you Mahesh, you are brilliant like your sponsore

  • @binbots
    @binbots Місяць тому +11

    Uncertainty in measuring particles exists because until measured they exist in a future state. Because causality has a speed limit (c) every point in space where one observes it from will be the closest to the present moment. When one looks out into the universe they see the past which is made of particles (GR). When one tries to measure the position of a particle they are observing smaller distances and getting closer to the present moment (QM). The wave property of particles appears when we start trying to predict the future of that particle. A particle that has not had an interaction exists in a future state. It is a probability wave because the future is probabilistic. Wave function collapse is what we perceive as the present moment and is what divides the past from the future. GR is making measurements in the observed past and therefore, predictable. It can predict the future but only from information collected from the past. QM is attempting to make measurements of the unobserved future and therefore, unpredictable. Only once a particle interacts with the present moment does it become predictable. This is an observational interpretation of the mathematics we currently use based on the limited perspective we have with the experiments we choose to observe the universe with.

    • @richardc2726
      @richardc2726 Місяць тому

      You couldnt have come up with a more confusing explanation if you tried lol

    • @shantiprakashbihani1420
      @shantiprakashbihani1420 Місяць тому

      Just tell me you wrote this to flex

    • @drdca8263
      @drdca8263 Місяць тому

      You shouldn’t state this like a fact when it is your personal speculation.

    • @danishamin6018
      @danishamin6018 Місяць тому +2

      is it like a copy pasta now, I can see this comment on multiple such videos.

    • @binbots
      @binbots Місяць тому

      @@drdca8263 well you stated your comment like it’s a fact. Why do you get to but I don’t?

  • @1step-further
    @1step-further Місяць тому

    I didn't think I can understand quantum mechanic intuitively until I see your video :D keep up the good work bro! Thank you so much.

  • @OrangutanSquash
    @OrangutanSquash Місяць тому +2

    Best layman explanation I’ve seen. Thank you.

  • @shreya...007
    @shreya...007 Місяць тому +1

    Got this in my recommended. Started watching and when I heard your voice, I thought that it sounded familiar. But then when you started just the voice over I immediately knew...
    You're MY physics teachers.I've been learning physics from your videos on Khan Academy since 8th grade!!! 5 years now, and I NEVER KNEW YOU HAD A UA-cam CHANNEL!!!
    Thank you so much for your videos. I owe all my grades and understanding of physics entirely to you 🙌💛

  • @BBQDad463
    @BBQDad463 Місяць тому

    Thank you for this video. You offer perhaps the clearest explanation of Heisenberg's Uncertainty Principle I have yet seen.

  • @SuperAronGamerMNO
    @SuperAronGamerMNO Місяць тому

    Thank you so much for making a video that explains this intuitively! I'm hopefully going to start studying physics at university fairly soon, and I was quite intimidated by quantum mechanics. I thought I had to learn a lot about how the equations work before understanding things like this, but through this video I managed to already get an intuitive understanding, which will probably help me understand and use the equations later on.

  • @karlfreiha4745
    @karlfreiha4745 21 день тому

    man these videos make me smile they answer all my questions

  • @ohlookadandelion
    @ohlookadandelion 29 днів тому

    Ive been a fan since ur 'why is the speed of light constant' video! U explain SO WELL. Pls dont stop making videos!!!

  • @n20games52
    @n20games52 Місяць тому

    Wonderful video. This is a description of (or an approach to) the uncertainty principal that I have never heard. Just as you promised, it feels much more intuitive now. So much more to learn and understand... I look forward to your next video.

  • @Jcactus213
    @Jcactus213 Місяць тому +1

    my man is so passionate about teaching us, just amazing

  • @HassaanFareed
    @HassaanFareed 18 днів тому +1

    Such a wonderful explanation❤️

  • @BritishBeachcomber
    @BritishBeachcomber Місяць тому

    I love your enthusiasm Mahesh, and the way you speak fast enough to get so much information across in a short video, and also so easy to understand 👍👍👍👍👍

  • @akirasthecat
    @akirasthecat Місяць тому

    Fantastic video again! Precise, clear and intuitive. Love your enthusiasm! It's contagious! 🫶

  • @guillaumebourgault5532
    @guillaumebourgault5532 Місяць тому

    your enthusiasm and fascination is contagious. Wonderful!

  • @auriuman78
    @auriuman78 Місяць тому

    Mahesh, as always thanks for the video thanks for breaking it down so it's easy to understand and as already mentioned I truly do love the way you resurrect the scientists and have conversations with them 😅 it's such a great learning tool it seriously sticks that way because it's so memorable!

  • @sharthakghosh970
    @sharthakghosh970 Місяць тому

    These videos can become the backbone for understanding such complex and abstract concepts for the new generation of high school students around the world. I am a software engineer who started exploring quantum computing just for fun and somehow landed up here. Been here the entire day.

  • @kaizokuou8538
    @kaizokuou8538 Місяць тому

    Best video on uncertainty principle i have seen so far...you gave me whole new understanding about it😊😊

  • @udomann9271
    @udomann9271 Місяць тому

    I never saw or heard a good explanation like this, many thanks.

  • @someonenotnoone
    @someonenotnoone Місяць тому

    Excellent presentation, such a simple demonstration with profound implications.

  • @Kavee_003
    @Kavee_003 Місяць тому

    This video fulfilled many of my curious questions about this amazing mechanisms,and gave rise to many new curiosities. I must Thank you for that my friend...

  • @reggietkatter
    @reggietkatter Місяць тому

    Your channel is an incredible boon for scientists, technicians and laypeople. Thank you.

  • @p12psicop
    @p12psicop Місяць тому

    I've seen a few of your videos. I enjoyed them. This one earned a subscription.

  • @kraetyz
    @kraetyz Місяць тому

    This video is giving me wonderful insights. I love the specificity in highlighting that "wave-particle duality" doesn't mean that the object *is* a wave and a particle, which is how most people (even non-expert teachers!) will explain it. I'll definitely be taking that away from the video, if nothing else, though the thorough step-by-step in outlining the uncertainty principle is fantastic too.

  • @hgtrad7655
    @hgtrad7655 Місяць тому

    I learnt to derive Schrodinger wave equation and Heisenberg uncertainty, having a solid background in advanced electromagnetics, your explanation clarifies many untangled questions thank you.

  • @Neu-cv8qj
    @Neu-cv8qj Місяць тому

    This channel is probabbely the most intuitive physics channel on youtube.

  • @AshirvadTripathi
    @AshirvadTripathi Місяць тому +2

    Oh! let me show this video to Feynman, last time he was curious whether Mahesh is interested in Heisenberg Uncertainty Principle or not.❤ Thanks for the explanation
    😊

  • @arhanpopli5344
    @arhanpopli5344 Місяць тому +1

    You're so good are explaining things!

  • @jannelaaryan
    @jannelaaryan Місяць тому +1

    Marvellous and astounding explanation I've ever seen , how do you simplify all these terrific topics ?

  • @AviralChandrawanshi
    @AviralChandrawanshi Місяць тому +1

    Hey!!! Thank You veery much... I understood. You explain in very practical Manner with no tons of maths. But a sense of logical explanation... ❤

  • @jamesmcgarity2985
    @jamesmcgarity2985 Місяць тому

    I *literally* said to myself out loud "WHOA ......" at your teacher's explanation of the Heisenberg Uncertainty Principle at the beginning of the video. I've never heard such an intuitive way of thinking about this phenomenon! Amazing!

    • @theomommsen6875
      @theomommsen6875 Місяць тому

      No - this explanation is misleading as he said!

  • @vuxovp
    @vuxovp Місяць тому

    Omg! I was just thinking about exploring this topic since my teacher couldn't explain very well, and your video came in my recommendation. Thanks!!! - Love from BD

  • @TFayas
    @TFayas Місяць тому

    Great video Mahesh!! That makes total sense, as you started to show the wavelength interference I got that "ahah!" Moment just before you explained it further!

  • @Bowshewicz
    @Bowshewicz 6 днів тому

    This physics channel has given me a unique understanding of so many advanced concepts. I love your approach, Mahesh, and I truly think that you are cementing yourself as a historic voice in science communication.

  • @whitedevil717
    @whitedevil717 Місяць тому

    Loved the Video❤

  • @RogerTerrill
    @RogerTerrill Місяць тому

    Really brilliant Mahesh! Thank you very deeply.

  • @misterlau5246
    @misterlau5246 29 днів тому

    Good explanation indeed, way to go!

  • @mandeepsingh-fd7mh
    @mandeepsingh-fd7mh Місяць тому +1

    Thanks for making this ❤

  • @Shrutithenerd
    @Shrutithenerd Місяць тому

    Such a great explanation thank you sir! we need more videos like this. ☺️

  • @juantkastellar2655
    @juantkastellar2655 10 днів тому

    Maravillosa y muy clara explicación. Gracias FloatHeadPhysics.

  • @alejrandom6592
    @alejrandom6592 Місяць тому

    Man I seriously underestimated yourchannel. Your content is amazing!

  • @scsteeldrums
    @scsteeldrums Місяць тому

    You have such joy when you teach. Thank you.

  • @chakradharmahapatra1958
    @chakradharmahapatra1958 Місяць тому

    Such a wonderful explanation. Thanks a lot.

  • @Jose-ku2ek
    @Jose-ku2ek 26 днів тому

    Thank you for this video. Brilliant.

  • @user-pb5fy6zy7d
    @user-pb5fy6zy7d Місяць тому

    Best explanation ever!! You nailed it again

  • @StarLan7
    @StarLan7 Місяць тому

    So glad I found this channel

  • @minhazfav
    @minhazfav Місяць тому

    Please don't stop making these kind of priceless videos. Your subscribers may be a small number relative to other content creator but I bet your viewers are regular.

  • @anketmohadikar8767
    @anketmohadikar8767 Місяць тому

    Great video.loved it.

  • @daanskiel1236
    @daanskiel1236 Місяць тому

    Mahesh you are lowkey the best in intuitively explaining complicated subjects like these, thank you for these video's.

  • @guptapranay89
    @guptapranay89 Місяць тому

    Thank you! You did a very nice job of explaining the Uncertainty Principle. I feel if need be I can even try and explain it to school level kids as well :)

  • @RT-mn2pb
    @RT-mn2pb Місяць тому

    Nice video and good thought process. I think the hardest part of all of this is that any explanation we try to come up with is founded in our own human experience. That experience is and must be filtered by the nature of our senses, the way our brain works, our macroscopic scale of living, and our cultural way of thinking. In other words, the nature of our existence biases us in a way that makes us WANT to explain things that are outside our experience using things that are inside our experience . And sometimes, like with quantum stuff, that doesn't work so well. So, while the math may work, an intuitive grasp always elides us.

  • @rb9805
    @rb9805 11 днів тому

    Your lectures are absolutely FANTASTIC!!!!!!!!!!!!OUTSTANDING

  • @Devendr7
    @Devendr7 Місяць тому

    Love this kind of videos. Keep it up