Understanding the Uncertainty Principle with Quantum Fourier Series | Space Time

45 thoughts on “Understanding the Uncertainty Principle with Quantum Fourier Series | Space Time”

1. By the way, all discussions seem to come back to Hawking radiation! LOL

2. Very interesting . Was wondering about the origins of HUP.

3. Convoluted claptrap – none of it stands up to scrutiny by real physicists

4. is his accent Australian? This video kicks ass and I want to show this to all humans.

5. I'm still uncertain about this.

6. I will definitely have to watch this video multiple times lol

7. I love physics.

8. Im not sure if I understood this video

9. The HUP illustrates how the identity of energy and information become conflated in extreme situations. Time stops at the event horizon of a black hole, and photons don't experience the passage of time, because time is never what you think it is, until that time rolls round again. The obvious implication is that 42 is as good as it gets, explaining the failure of modern physics to produce any significant progress in half a century.

10. The statement about digital audio being represented in the frequency domain isn't true. Simple time domain representations are heavily used (CD audio, WAV files, and the signal paths through studio equipment are like this), and any frequency domain representations used in compression or (re-)synthesis must be windowed (in some slightly generalised sense) to allow for finite latency! Indeed, when translated back into the audio domain, this was the topic of the episode, when translated back into the audio domain.

11. Momentum is based on position so lol

12. Quantum mechanics has become so difficult, even mathematicians don't get it. Where is the Einstein to lead us out of this partly Einstein created quagmire?

13. Now I'm even more unsure about the uncertainty principle. Thanks a lot.

14. Your video reeeeeeeeeeeally helps me a lot to understanding the QED and even Fourier transform, thaaaaaaanks!

15. …nope, I still don't understand how a (hypothetical) particle that is nailed to a specific location in space, and thus is perfectly still, could possibly have any momentum other than zero.

16. Why position and momentum are multiplied?

17. Ok. So If any single measurement cannot know both speed and position at
    the same time, then why not have 2 individuals measure at the same time.
    One measures the speed and the other measures the position-at the same
    time. Problem solved.

18. What is the best book for reading… Quantum Mechanics and theory of relativity for undergraduate…… Pls?……

19. 5:10 – Mind Rupture
    https://youtu.be/80DtQD5BQ_A?t=119

20. The velocity of the explanation I can hear and see. However, I have am uncertain where I am now?

21. So, why is an Australian guy a presenter for PBS?

22. I'm not sure about the sound wave analogy here. Sound waves propagate through a medium of particles, and the localized distortion or turbulence of the particles would be visible if time froze, relative to particles that weren't "carrying" the wave. Right?

23. What if, Alice measured the y direction of particle A at 9am, and Bob measured the x direction of particle B right at the exact same time as Alice, which is also 9am. Of course A and B are entangled. After that, Alice walk to Bob, tells Bob about the result. So, at this moment, Alice and Bob knows the exactly both x and y directions of particle A and B at 9am, so the uncertainty principle broken?

24. So… Sub particles act like a fluid?

25. there is only one moment -buddha

26. this guy is disgusting

27. this monkey is very irritating, please without mimic to speak, you are not an actor, please behavior modest !!!!

28. No links to Veritasium or the Benjamin Shoemaker's series (I'm guessing based on his pronunciation of shoemaker, I'm spelling that wrong.)

29. Sorry, didn't catch that :/

30. What happens to all the, what would be sound waves in the vacuum of space?

31. 2nd year electronic engineering and some of this maths finally makes sense

32. can someone help me with this math problem? Anyone who does will get a follow, a like, and a bunch of comments. I just can't hold it in anymore.

    (17661.9478 *5.1974632+q/e² ) – 76.4685/t = (Sq/d xr²)/((5.19)^3xn¹n²)-9.547±.000147)+(xyz)*(stfu)ž­‡™

33. "Uncertainty principle" is an oxymoron. Heisenberg may have identified a lack of principle which implies either that there are natural forces unknown or an inherrent chaos.

34. 1200th comment! ….or am I.

35. Thank you Family that is beautiful, peace and love, Doug:)<3.

36. enchiladas

37. After watching this many times and thinking about hup as well as the plank equation I'm not convinced this is an accurate interpretation either. It seems hup is a consequence of describing particles and waves simultaneously as statistical phenomenon. Some information is unknown because the nature of the broad description of statistical representation.

38. wrg

39. Really hard to understand…

40. If electron behaves as wave means will all mass of electron converts into energy and propagate in the form of wave.Can u plz clarify my dought

41. A particle has an exact position, velocity, and energy at a given moment. Its just that we observers cannot know those things using current technology. Our current observation methods impart energy which changes the thing being observed. Why does quantum mechanics equate our inability to measure these things with the fundamental nature of reality? Our ignorance of the full nature of a particle in no way influences the nature of that particle.

42. Heisenberg may have slept here!

43. Thanks, I got the drift.

44. He appears to be sneezing all the time

45. Hello, I will copy my question from another video, hoping it might get some responses here.

    Edward Teller, on measurements and observers:
    "A measurement is defined by an irreversible process which does not allow an original state to be reconstructed from the final state".

    Hasn't every particle in existence at one time or another been "measured" in such a sense. When electron's position is measured in its travel from the initial state to its final state, can it ever reverse to be "unmeasured", and if yes under what conditions.

    To be more to the point, if one measures the position of an electron in the atom at one time, and then walk outs of the room, then another person comes in and revisits the same atom. Has the electron's wave function forever been "collapsed" and it no longer exists as a probability cloud in that atom from now on, from when person no. 1 measured it – so that to person no. 2 electron is no longer a probability cloud, a wave function but something else then, a real god-given particle? If to a person no. 2 that electron is still simply a probability cloud, at what point did the electron become "unmeasured"?

    Thanks, whoever, whenever.

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