
20220601: What If Physics IS NOT Describing Reality?
 04:05: ... like quantum indeterminacy, entanglement, and the uncertainty principle turn out to be the expected behaviors of this sort of information ...
 08:49: ... to some other staples of quantum theory  like the Heisenberg uncertainty principle. In a previous episode we saw how the uncertainty principle arises ...


20211210: 2021 End of Year AMA!
 00:02: ... perfectly defined momentum and as we know from the heisenberg uncertainty principle if a particle has perfectly defined position perfectly defined ...


20210818: How Vacuum Decay Would Destroy The Universe
 04:42: ... Heisenberg uncertainty principle tells us that there’s a fundamental uncertainty in  ...


20210707: Electrons DO NOT Spin
 10:51: And by Heisenberg's uncertainty principle increasing your knowledge of one, means increasing the unknowability of the other.


20210616: Can Space Be Infinitely Divided?
 03:47: ... where this is going  we’re about to discover the Heisenberg uncertainty principle. Bare with me though with just a touch of ...
 04:49: ... experiment the Heisenberg microscope. We now know that the uncertainty principle is far more fundamental than just the effect of disturbing ...
 05:08: ... point I want to focus on today is that through the uncertainty principle we see that the Planck constant represents the limit to ...
 08:37: ... that volume down as much as possible. But the Heisenberg uncertainty principle says that when we do that we increase the uncertainty ...


20210525: What If (Tiny) Black Holes Are Everywhere?
 11:17: ... not aliens yet, and then the one on how to mess with the limits of the uncertainty principle in detecting gravitational ...
 13:36: ... onto the episode where we looked at how the Heisenberg uncertainty principle can be gamed to improve measurements  in particular in gravitational ...
 15:08: ... of you criticized our title from last week  we called it “Breaking the Uncertainty Principle”, but you rightly  if pedantically  pointed out that it should have been ...


20210519: Breaking The Heisenberg Uncertainty Principle
 00:07: And in some cases succeeding, by squeezing the Heisenberg uncertainty principle to its breaking point.
 00:47: ... against the absolute quantum limit  the limit defined by the Heisenberg Uncertainty Principle. ...
 01:05: Today we’re going to see how the uncertainty principle can be hacked to make measurements more precisely than should ever be possible.
 01:13: ... Heisenberg uncertainty principle tells us that there exists a fundamental unknowability to nature  an ...
 01:41: ... we call these pairs of properties complementary variables, and the uncertainty principle tells us that the uncertainties in our knowledge of such a pair, when ...
 01:58: Werner Heisenberg discovered the uncertainty principle when he was inventing his version of quantum mechanics back in the 1920s.
 02:05: That version is called matrix mechanics, but we get the same uncertainty principle using the wave mechanics of Schrodinger.
 02:13: ... to think about it  so to get an idea of the fundamental source of the uncertainty principle, you can watch our episode on how it comes about from thinking about ...
 02:56: Basically, he thought the uncertainty principle arose as a result of the measurement disturbing the system.
 03:13: He thought the uncertainty principle was hinting at a far more fundamental law of the universe.
 04:10: The Heisenberg uncertainty principle prevents us from being able to know everything about a quantum state all at once.
 04:23: Remember, the uncertainty principle places a lower limit on the product of the uncertainties of pairs of complementary properties.
 04:47: ... that enable us to manipulate quantum states to push the limits of the uncertainty principle. ...
 06:21: And this is where the uncertainty principle comes in.
 06:53: Unless we can hack the uncertainty principle.
 07:25: ... light from a laser beam obeys the Heisenberg uncertainty principle in a very specific way—it has equal amounts of uncertainty in its two ...
 07:35: ... area of the circle is proportional to Planck’s constant, satisfying the uncertainty principle. ...
 10:17: ... willing to bend a few fundamental laws  in this case, the Heisenberg uncertainty principle  we can push the limit beyond what we thought possible to force ever ...


20210421: The NEW Warp Drive Possibilities
 17:32: ... but now But now I see it’s an ancient viking metaphor for the Heisenberg uncertainty principle. ...


20201111: Can Free Will be Saved in a Deterministic Universe?
 08:05: ... is a direct consequence of the Heisenberg uncertainty principle, which tells us that measuring one property perfectly leaves a ...


20201020: Is The Future Predetermined By Quantum Mechanics?
 04:15: At least as far as the Heisenberg Uncertainty Principle allows.


20200422: Will Wormholes Allow Fast Interstellar Travel?
 12:51: ... of spacetime may fluctuate wildly, its form shifting due to Heisenberg’s uncertainty principle. The result is what we call the spacetime foam, and it may imply that ...


20200106: How To Detect a Neutrino
 04:46: ... sort of cheats energy conservation by taking advantage of the Heisenberg uncertainty principle, ♪ ♪ which tells us that there's a fundamental uncertainty ♪ ♪ between ...


20190806: What Caused the Big Bang?
 08:29: ... to randomly fluctuate to different values, thanks to the Heisenberg uncertainty principle. ...


20190509: Why Quantum Computing Requires Quantum Cryptography
 04:21: Each highlights a different fundamental weirdness of quantum mechanics – the Heisenberg uncertainty principle and quantum entanglement.
 04:38: ... uncertainty principle tells us that we cannot simultaneously know the values of certain pairs ...
 06:37: You just switched between different quantum representations of reality and then back again, and so invoked the uncertainty principle.


20190306: The Impossibility of Perpetual Motion Machines
 06:55: Due to the intrinsic quantum randomness of all particles, as expressed by the Heisenberg uncertainty principle, everything moves.


20181031: Are Virtual Particles A New Layer of Reality?
 07:29: The Heisenberg uncertainty principle tells us that the perfectly defined momenta of virtual particles means completely undefined position.
 09:20: ... mechanics, nothing can be so exact thanks, again, to the Heisenberg uncertainty principle. ...


20180920: Quantum Gravity and the Hardest Problem in Physics
 05:50: The Heisenberg uncertainty principle tells us the minimum energy of our beam for a given precision.
 06:28: Steady viewers will remember that the uncertainty principle talks about the tradeoff between position and momentum.
 06:37: The uncertainty principle also defines the precision tradeoff between time and energy.
 06:54: For those of you who already watched our episode on the Heisenberg uncertainty principle, here's another way to think about this.


20180823: How Will the Universe End?
 16:09: In practice, the Heisenberg uncertainty principle makes this impossible.


20180523: Why Quantum Information is Never Destroyed
 07:58: But all of this talk of quantum mechanics being deterministic seems a bit at odds with the idea of quantum randomness and the uncertainty principle.
 08:18: And the precision of the knowability of that value is defined by the uncertainty principle.


20180110: What Do Stars Sound Like?
 05:05: We've spoken in depth about Fourier analysis in a recent episode on understanding the uncertainty principle, so I won't go to too much detail here.


20171213: The Origin of 'Oumuamua, Our First Interstellar Visitor
 10:36: Well we generalize frequency as momentum because the Heisenberg uncertainty principle applies to momentum in general.


20171206: Understanding the Uncertainty Principle with Quantum Fourier Series
 00:16: ... wave is going to open the door to really understanding Heisenberg's uncertainty principle, and ultimately, quantum fields and Hawking ...
 00:28: [MUSIC PLAYING] One of the most difficult ideas to swallow in quantum mechanics is Werner Heisenberg's famous uncertainty principle.
 00:49: See, the apparent weirdness of the uncertainty principle hints at an even weirder underlying reality that gives rise to it.
 01:31: But as you'll see today, in that unraveling, we are led unavoidably to Heisenberg's uncertainty principle.
 01:40: The uncertainty principle is most often expressed in terms of position and momentum.
 02:06: The uncertainty principle exists alongside this observer effect.
 02:16: To understand the origin of the uncertainty principle, we don't need to know any quantum mechanics, at least not to start with.
 02:29: However, it turns out that something like the uncertainty principle arises in any wave mechanics.
 05:41: That sounds an awful lot like a frequencytime uncertainty principle for sound waves.
 05:47: ... about the fundamental knowability of a sound wave, as is Heisenberg's uncertainty principle, it's more a statement about the sampling of frequencies needed to ...
 09:40: So that's exactly the uncertainty principle.
 10:45: The uncertainty principle, therefore, tells us that they must be completely unconstrained in position.
 11:59: ... series, "Quantum Mechanics," which includes a great episode on the uncertainty principle. ...


20171102: The Vacuum Catastrophe
 00:44: We saw in our recent episode that we can thank the Heisenberg uncertainty principle for this bizarre behavior.
 01:55: ... satisfy the Heisenberg uncertainty principle, the vacuum state of any fuel oscillation must be half of the tiny Planck ...


20171025: The Missing Mass Mystery
 12:09: The energy is borrowed from the energy of the vacuum for the minuscule time allowed by the uncertainty principle.


20171019: The Nature of Nothing
 01:09: ... perfectly defined, and this is impossible according to the Heisenberg uncertainty principle. ...
 03:34: But here we run up against that pesky Heisenberg's uncertainty principle once again.
 05:33: But the ultimate price is that virtual particles can exist only for the instant allowed by the Heisenberg uncertainty principle.


20171011: Absolute Cold
 05:04: The Heisenberg Uncertainty Principle tells us that there is an absolute limit in the knowability of particular combinations of properties.
 06:21: For example, the quantum fields that fill our universe also fluctuate due to the Uncertainty Principle resulting in what we know as vacuum energy.
 07:24: For example, Brian Greene's Exploring Quantum History delves much more deeply into the Heisenberg Uncertainty Principle.


20170707: Feynman's Infinite Quantum Paths
 00:36: The Heisenberg uncertainty principle tells us that the more precisely we try to define one property, the less definable is its counterpart.


20161208: What Happens at the Event Horizon?
 15:51: More generally, it allows pilot wave theory to agree with Heisenberg's uncertainty principle.
 15:57: In the Copenhagen interpretation, the uncertainty principle describes the intrinsic randomness of the quantum world.


20160622: Planck's Constant and The Origin of Quantum Mechanics
 01:35: ... and more formally, the Heisenberg uncertainty principle, describes the smallest distance for which an object's location can be ...
 02:12: ... Heisenberg uncertainty principle and the de Broglie wavelength, but also the Schrodinger equation, the ...


20160601: Is Quantum Tunneling Faster than Light?
 09:07: ... accurately, it's within the uncertainty range defined by the Heisenberg uncertainty principle, which is perhaps the deeper principle from which the de Broglie ...


20151209: How to Build a Black Hole
 03:15: ... of quantum theory, the Pauli exclusion principle and the Heisenberg uncertainty principle. ...
 05:10: The Heisenberg uncertainty principle tells us that the properties of a quantum entity are fundamentally uncertain.
 06:04: ... Heisenberg uncertainty principle tells us that particular pairs of quantities, position and momentum or ...
 06:32: Therefore, the Heisenberg uncertainty principle tells us that they must have highly undefined momenta.
