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2022-09-14: Could the Higgs Boson Lead Us to Dark Matter?

  • 08:39: In this case, it’s by using a 350 year old law of physics known as conservation of momentum.
  • 08:48: ... Conservation of momentum tells us that the product of velocity times mass of all ...
  • 10:30: ... Conservation of momentum tells us that there should be more stuff firing out in the ...

2022-06-15: Can Wormholes Solve The Black Hole Information Paradox?

  • 01:40: ... from the universe.  This conflicts with the law of   conservation of quantum information, which is a non-negotiable constraint of ...
  • 03:20: ... information seems like it should disappear, violating the law of conservation of quantum information and giving   all of its past Hawking ...

2022-04-27: How the Higgs Mechanism Give Things Mass

  • 02:26: We saw in our episode on Noether’s theorem that  these symmetries lead to conservation laws.

2022-03-16: What If Charge is NOT Fundamental?

  • 05:50: The conservation of fundamental properties defines which interactions are possible and which are impossible.

2021-11-17: Are Black Holes Actually Fuzzballs?

  • 03:34: And that violates a very deep and fundamental law - the law of conservation of quantum information.

2021-11-10: What If Our Understanding of Gravity Is Wrong?

  • 06:06: It doesn’t respect conservation of energy or momentum or angular momentum.
  • 08:15: ... of motion to be extracted in a way that automatically obeys all of our conservation ...
  • 08:50: ... quadratic Lagrangian” gave the same results as MOND, except that  conservation laws were obeyed,   and because this was a relativistic theory ...
  • 16:23: It’s the symmetries of the Lagrangian via Noether’s theorem that yields our conservation laws and ultimately, well, all of physics.

2021-10-20: Will Constructor Theory REWRITE Physics?

  • 02:40: ... general relativity and quantum mechanics, along with more fundamental conservation laws, or principles, to rule out impossible output states given an input ...
  • 05:44: Again, this task is impossible, since it’s ruled out by the laws of quantum mechanics and the principle of conservation of energy.
  • 06:43: ... law of conservation of energy says that it’s impossible to create energy from nothing, and ...

2021-08-03: How An Extreme New Star Could Change All Cosmology

  • 02:13: ... as the core slowly collapses under its own gravitational crush due to conservation of angular momentum. But typical white dwarfs take from a few hours to a ...

2021-07-07: Electrons DO NOT Spin

  • 00:22: ... suddenly begin to rotate on the  chair. It’s a demonstration of the conservation of angular momentum. The angular momentum  of the wheel is changed ...
  • 00:47: ... rotating with a constant speed. At first glance this appears to violate conservation of angular momentum because there was nothing spinning  to start ...
  • 04:40: ... spin now. It’s  an intrinsic angular momentum that plays into the conservation of angular momentum like  in the Einstein de-Haas effect, and it ...
  • 10:33: ... motion to changes in coordinate location gives us the law of the  conservation of momentum. For related reasons in quantum mechanics position and  ...

2021-05-25: What If (Tiny) Black Holes Are Everywhere?

  • 09:36: That breaks one of the most sacred rules of quantum mechanics - the conservation of quantum information.

2020-11-11: Can Free Will be Saved in a Deterministic Universe?

  • 02:46: One of the most important rules of quantum mechanics is the principle of conservation of quantum information.
  • 04:23: ... an entirely new thread of quantum information, in violation with the conservation principle, or two, that this information just not be predictable even in ...
  • 05:37: Now, creating brand new information explicitly violates conservation of quantum information.

2020-11-04: Electroweak Theory and the Origin of the Fundamental Forces

  • 02:02: So an ingoing neutron is directly converted into the outgoing proton, electron and neutrino, with all the conservation laws satisfied.

2020-06-22: Building Black Holes in a Lab

  • 06:33: ... just saying that black holes must lose mass for the sake of energy conservation. ...

2020-04-28: Space Time Livestream: Ask Matt Anything

  • 00:00: ... turn to another question from there's a couple of good questions on conservation laws so Michael from the community tab asks if I can describe how ...

2020-02-03: Are there Infinite Versions of You?

  • 07:55: ... these properties - and that tends to be prohibited by a combination of conservation laws and the formation of black ...

2020-01-27: Hacking the Nature of Reality

  • 07:12: ... conditions include things like conservation of energy and momentum, the behavior of quantum properties like spin, ...

2020-01-06: How To Detect a Neutrino

  • 04:46: ... ♪ It's sort of cheats energy conservation by taking advantage of the Heisenberg uncertainty principle, ♪ ♪ which ...

2019-10-21: Is Time Travel Impossible?

  • 06:36: They’re a set of requirements that do things like prevent negative energies and enforce energy conservation.

2019-07-15: The Quantum Internet

  • 04:18: ... is connected to the law of conservation of quantum information, which we’ve talked about before - it comes from ...

2019-04-03: The Edge of an Infinite Universe

  • 16:18: Chris Hanline wisely notes that dark energy appears to break the conservation of energy.
  • 16:25: ... sort of true - except that the law of conservation of energy has a very clear range of validity - it's valid in systems ...
  • 16:39: In fact conservation of energy comes from this symmetry, as revealed by Noether's theorem.
  • 16:53: In its most familiar form, conservation of energy doesn't apply and so dark energy CAN be created from nothing.

2019-03-28: Could the Universe End by Tearing Apart Every Atom?

  • 12:11: ... the final reason to hate on phantom energy: it violates energy conservation in a way far worse than regular dark energy. It violates the same energy ...

2019-03-06: The Impossibility of Perpetual Motion Machines

  • 00:30: We have perpetual motion machines of the first kind - they violate energy conservation - they pump more energy out than they need to keep running.
  • 02:41: Now to be fair to the people working during the middle ages and Renaissance, the law of conservation of energy hadn’t been discovered yet.
  • 08:23: They have various explanations for how they don’t violate conservation of energy.

2019-01-30: Perpetual Motion From Negative Mass?

  • 09:00: At first glance that sounds like it breaks conservation of momentum and energy.

2019-01-16: Our Antimatter, Mirrored, Time-Reversed Universe

  • 03:02: ... the positively charged Kaon meson decayed in ways that violated parity conservation it turns out that these Kaon particles are great at catching the ...

2018-12-12: Quantum Physics in a Mirror Universe

  • 00:02: ... same parity so the same response to reflections that's what we mean by conservation of parity at least one of these decay products broke conservation of ...

2018-07-11: Quantum Invariance & The Origin of The Standard Model

  • 06:19: Change the shape of that wave function with local phase shifts and you actually break conservation of momentum.

2018-06-20: The Black Hole Information Paradox

  • 01:33: First, we looked at the law of conservation of quantum information.
  • 02:08: At first glance, the no-hair theorem seems to contradict the conservation of information.
  • 02:27: ... there's nothing about the law of conservation of information that requires information to remain within our accessible ...
  • 07:16: ... information to Hawking radiation, you may still violate the law of conservation of information just as much as you would by deleting ...
  • 07:39: The information would be duplicated, violating conservation of information.

2018-06-13: What Survives Inside A Black Hole?

  • 01:21: ... the no-hair conjecture with everything we learned recently about the conservation of quantum ...
  • 10:31: We discussed recently why quantum mechanics demands the conservation of quantum information.
  • 11:44: In our last episode we looked at what might be the most fundamental rule in quantum mechanics, the conservation of quantum information.
  • 12:18: ... is described by quantum-field theory, and unitary evolution and the conservation of probability and information still works ...

2018-05-23: Why Quantum Information is Never Destroyed

  • 01:16: Today, we learn why conservation of information is such a fundamental requirement of quantum mechanics.
  • 01:28: An important tool for making predictions with the laws of physics are the conservation laws that we derive from them.
  • 02:14: Time-reversal symmetry isn't covered by Noether's theorem, but it's still tied to a conservation law.
  • 02:21: The conservation of information.
  • 03:09: That's what I mean about conservation of information.
  • 04:36: It ensures conservation of information and time-reversal symmetry because of an even more fundamental rule-- the conservation of probability.
  • 05:51: ... the Schrodinger equation guarantees time reversibility and so the conservation of information, as do the more advanced formulations of quantum ...
  • 06:56: ... works, but the condition also ensures time-reversal symmetry and conservation of ...
  • 08:41: ... Copenhagen interpretation of quantum mechanics actually does mess with conservation of ...
  • 11:03: Noether's theorem predicts the conservation laws of physics from the symmetries of nature.
  • 11:11: Merissan has plans to use the loss of energy in cosmological redshift as a refutation of conservation of energy arguments.
  • 11:22: Conservation of energy is completely valid and always applies on the scales of systems that humans deal with.

2018-05-16: Noether's Theorem and The Symmetries of Reality

  • 00:07: Conservation laws are among the most important tools in physics.
  • 00:23: [MUSIC PLAYING] Conservation laws are the cheat codes of physics.
  • 00:37: More than cheat codes, conservation laws are clues to the source code.
  • 00:49: The connection between conservation laws and symmetry is encapsulated in Noether's theorem.
  • 01:34: But the failure of energy conservation was still clear from the math of general relativity.
  • 01:49: She discovered why the law of conservation of energy broke down in general relativity.
  • 01:57: She realized that all conservation laws arise from a more fundamental relationship, which we call Noether's theorem.
  • 04:01: Noether's theorem reveals that this time translation symmetry gives us energy conservation.
  • 04:23: By revealing the underlying source of conservation laws, Noether's theorem handily explains when and why they are broken.
  • 04:31: That includes the apparent breaking of conservation of energy in general relativity.
  • 05:00: The law of conservation of energy is fundamental in Newtonian mechanics, in which space and time are unvarying and eternal.
  • 05:08: But in Einstein's universe, energy conservation is only valid as a special case.
  • 05:33: ... saves energy conservation by incorporating the entire universe's gravitational potential energy to ...
  • 07:54: This symmetry leads to the conservation of electric charge and electric current.
  • 10:07: Fabrice, your continuously time-symmetric contributions are fundamental to the conservation of "Space Time." So thank you.

2018-02-28: The Trebuchet Challenge

  • 05:04: The law of conservation of energy tells us that the sum of kinetic and potential energies of the projectile and the counterweight are conserved.

2018-02-14: What is Energy?

  • 01:43: Besides the whole co-inventing calculus thing, Leibniz's vis viva seen as a competition to Newton's idea of conservation of momentum.
  • 02:20: When she introduced the idea of gravitational potential energy, she put the laws of conservation of energy and momentum on equal footing.
  • 02:40: The law of conservation of energy is an incredibly powerful tool.
  • 06:55: Just adding conservation of energy to Newton's mechanics gives an extra constraint that allows us to solve problems we couldn't otherwise.
  • 07:42: ... Bernoulli's equation predicts the flow of fluids by demanding the conservation of the kinetic and potential energy of the fluid and also of the ...
  • 07:56: ... the concept of energy and its conservation has led to new types of mechanics that have supplanted Newtonian ...
  • 09:45: See, the law of conservation of energy arises because of symmetry, in particular time translational symmetry.
  • 10:06: For example, the law of conservation of momentum is due to spatial translation symmetry.
  • 10:16: ... relationship between conservation laws and symmetries was discovered by mathematician Emmy Noether and ...
  • 10:53: ... actually, conservation of energy is generally invalid in the context of Einstein's general ...

2018-01-24: The End of the Habitable Zone

  • 12:48: And conservation of energy demands that the black hole give up mass.

2017-11-02: The Vacuum Catastrophe

  • 00:35: Virtual particles appear and vanish from nowhere in seeming violation of our intuitions about the conservation of mass and energy.

2017-10-25: The Missing Mass Mystery

  • 11:59: ... introduce energy into the universe and therefore violate the law of conservation of ...

2017-10-19: The Nature of Nothing

  • 05:24: For example, quantum conservation laws must be obeyed, so most virtual particles are created in particle-antiparticle pairs.

2017-08-02: Dark Flow

  • 10:24: By themselves, they don't obey momentum conservation.
  • 10:30: Incoming and outgoing particles must obey energy and momentum conservation.

2017-07-26: The Secrets of Feynman Diagrams

  • 04:35: ... because of conservation laws-- energy and momentum conservation requires that particles not just ...

2017-02-22: The Eye of Sauron Reveals a Forming Solar System!

  • 02:51: Conservation of angular momentum has the central star spinning rapidly.

2017-01-11: The EM Drive: Fact or Fantasy?

  • 02:33: The law of conservation of momentum demands this.
  • 02:56: Which is to say, this explanation breaks the law of conservation of momentum.

2016-12-14: Escape The Kugelblitz Challenge

  • 06:32: ... and uses an impossible EM Drive technology that allows it to ignore conservation of momentum, so the satellites don't get ricocheted back to ...

2016-12-08: What Happens at the Event Horizon?

  • 14:14: ... go on to talk about how pilot wave theory might explain the apparent conservation of momentum-breaking ...

2016-05-25: Is an Ice Age Coming?

  • 12:01: Last week, we wrapped up our conversation on dark energy, talking about anti-gravity, negative pressure, and conservation of energy.
  • 13:58: ... but I don't think it's a speculative statement to say that the law of conservation of energy, as we learned when we studied Newtonian mechanics, is a ...
  • 14:12: ... quantity-- gravitational potential energy-- in order to preserve energy conservation. ...
  • 14:51: Conservation of energy is one such law that work in flat space time.

2016-05-18: Anti-gravity and the True Nature of Dark Energy

  • 11:29: See, the law of conservation of energy no longer applies in an expanding universe.

2016-04-13: Will the Universe Expand Forever?

  • 09:36: It'll shatter our intuitions about energy conservation and gravity on the largest scales of spacetime.

2016-03-16: Why is the Earth Round and the Milky Way Flat?

  • 10:26: They also give us things like the Laws of Conservation of Energy and of Linear and Angular Momentum, topics that we will get to.

2016-01-06: The True Nature of Matter and Mass

  • 02:20: The photons exert a force on the box, the box also exerts a force on the photons-- Newton's Third Law, which gives us the conservation of momentum.

2015-10-15: 5 REAL Possibilities for Interstellar Travel

  • 02:10: Conservation of momentum sucks.

2015-05-27: Habitable Exoplanets Debunked!

  • 09:38: The bottom line answer is that in general relativity, there actually is no such thing as energy conservation for the universe as a whole.
  • 09:45: How that can be, even though locally, in local pockets, you can have energy conservation, seems weird and contradictory.

2015-04-15: Could NASA Start the Zombie Apocalypse?

  • 05:04: And they come out from straight up momentum conservation.
  • 05:23: ... loss of mass into account and use a more correct version of momentum conservation called the rocket equation that compensates for ...
  • 05:32: Dariodario alluded to the rocket equation in that form of calculating momentum conservation in his comment.

2015-04-08: Could You Fart Your Way to the Moon?

  • 02:58: Conservation of momentum.
  • 04:57: So the net result for momentum conservation?

2015-03-18: Can A Starfox Barrel Roll Work In Space?

  • 04:56: Space telescopes, like Hubble and Kepler, also use angular momentum conservation to turn without thrusters.
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