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2022-12-08: How Are Quasiparticles Different From Particles?

  • 09:05: ... becomes zero, which in turn creates many cool interactions with electromagnetic fields, like levitating magnets, which you can use to make super fast ...

2022-10-19: The Equation That Explains (Nearly) Everything!

  • 01:33: ... equation to make that the case. That term turns out to be the electromagnetic field. ...

2022-09-28: Why Is 1/137 One of the Greatest Unsolved Problems In Physics?

  • 06:29: The more chance of interaction between the  electron and electromagnetic fields, the more of an EM disturbance each electron will make.

2022-08-24: What Makes The Strong Force Strong?

  • 06:03: Electrically charged particles interact with each other via the electromagnetic field.
  • 06:53: But this field looks very different to the electromagnetic field around a nucleus.

2022-08-03: What Happens Inside a Proton?

  • 05:14: ... the coupling strength between the electron   and electromagnetic field. The smallness  of the fine structure constant means the   ...
  • 05:31: ... of the gluon field rather than virtual  photons of the electromagnetic field.   We can draw Feynman diagrams of these  interactions, now with curly ...

2022-01-27: How Does Gravity Escape A Black Hole?

  • 06:16: ... particles by transferring virtual photons - ephemeral excitations in the electromagnetic field. ...
  • 07:21: ... sort of emerge from the electromagnetic field in the broader region occupied by both of the electrons, and their ...
  • 10:37: If a black hole swallows electric charge, the electromagnetic field around the black hole grows.

2022-01-12: How To Simulate The Universe With DFT

  • 01:48: ... by a sum of potential energies - that’s the V. V could result from the electromagnetic field inside the hydrogen atom, or the EM fields defining the walls of a box, ...

2021-12-10: 2021 End of Year AMA!

  • 00:02: ... a sense the let's say the proton is causing a vibration in the entire electromagnetic field through all space and so what that means is that the proton can excite ...

2021-08-18: How Vacuum Decay Would Destroy The Universe

  • 02:52: ... field value   is zero. And after the photon passes the  electromagnetic field goes back to ...

2021-05-11: How To Know If It's Aliens

  • 16:32: ... singularities - wormholes between adjacent dimensions threaded by electromagnetic fields. Turns out particles aren’t that, but it’s how the wormhole concept was ...

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

  • 05:32: That stuff turns out to describe the electromagnetic field.
  • 07:22: It had 1 degree of freedom - corresponding to a gauge field with a single mode - the electromagnetic field and its photon.
  • 08:50: ... example, adding mass to a photon means adding an extra term to the electromagnetic field stuff in the Schrodinger equation so that it would no longer be ...

2020-09-08: The Truth About Beauty in Physics

  • 11:38: The result was the same - the electromagnetic field popped out like magic.

2020-05-18: Mapping the Multiverse

  • 13:13: ... electrically charged, or Reissner-Nordström black holes the electromagnetic field within causes massive tension, or negative pressure that produces an ...

2020-04-22: Will Wormholes Allow Fast Interstellar Travel?

  • 01:09: ... around and interact with each other. And if you thread the funnels with electromagnetic field lines then they act like charged ...

2020-02-11: Are Axions Dark Matter?

  • 07:53: ... though axions have no electric charge, they can still interact with the electromagnetic field and produce photons via the strong ...
  • 08:58: ... constantly bouncing off electrons and protons in the presence of strong electromagnetic fields. Perfect conditions for producing axions, among other things. So the ...

2020-01-27: Hacking the Nature of Reality

  • 02:55: ... of quantum electrodynamics, which describes the interactions of the electromagnetic field. ...

2019-08-19: What Happened Before the Big Bang?

  • 02:24: Other fields like the particle field or the electromagnetic field are described by multiple components and vectors instead of single numbers.

2018-11-21: 'Oumuamua Is Not Aliens

  • 14:35: ... passing through matter, interactions with the electromagnetic field change the effect of mass of the neutrino by a process analogous to the ...

2018-11-07: Why String Theory is Right

  • 08:47: That term looks like what you would get if you added the electromagnetic field to the Schrodinger equation.
  • 11:07: ... as local phase invariance required us to add the electromagnetic field to the Schrodinger equation, adding Weyl invariance means we need to add ...

2018-10-31: Are Virtual Particles A New Layer of Reality?

  • 02:18: For example, two electrons-- excitations in the electron field-- will repel each other by exchanging energy through the electromagnetic field.
  • 02:30: ... electron jiggles the electromagnetic field, and those jiggles have a back reaction that jiggles each electron, which ...

2018-10-03: How to Detect Extra Dimensions

  • 13:32: But it may not be the same sort of changes you get when you quantize, say, the electromagnetic field.

2018-09-20: Quantum Gravity and the Hardest Problem in Physics

  • 08:10: For example, classical electromagnetism becomes quantum electrodynamics when you quantize the electron field and the electromagnetic field.
  • 09:33: ... self-interaction due to its electric charge messing with the surrounding electromagnetic field. ...
  • 09:48: ... a scheme to calculate a complex interaction, like the buzzing electromagnetic field around an electron, with a series of corrections to a simple, ...

2018-08-15: Quantum Theory's Most Incredible Prediction

  • 01:07: QED talks about the electromagnetic field whose excitations give us the photon.
  • 03:41: ... Electromagnetic fields seem intuitive if you think of them as tiny balls of rotating electric ...
  • 06:09: ... equation tells us how a relativistic electron would interact with an electromagnetic field, it still treats this EM field ...
  • 06:29: And QED tells us that the quantum electromagnetic field is a messy, messy place.
  • 07:06: It's really incredible that we can even begin to calculate the effect of the messy buzzing electromagnetic field.

2018-08-01: How Close To The Sun Can Humanity Get?

  • 03:51: It'll directly probe the sun's electromagnetic field and will connect the sun's magnetic activity with the sources of the solar wind.

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

  • 00:59: Today, I'm going to open the first portal of the standard model and show you the origin of the electromagnetic field.
  • 07:27: It looks exactly like the type of vector potential that you would have in the presence of an electromagnetic field.
  • 07:45: And it turns out that field already exists, and it's the electromagnetic field.
  • 08:24: Any particle that has this kind of charge will interact with and be affected by the electromagnetic field and be granted local phase invariance.
  • 09:23: Those oscillations in our new electromagnetic field turn out to be the photon.

2018-06-20: The Black Hole Information Paradox

  • 13:41: ... the outside of a black hole can feel its electric charge given that the electromagnetic field is communicated by photons and photons can't escape the black ...
  • 13:53: ... we talked about a black hole's electric charge in terms of the classical electromagnetic field which has an existence independent of electric ...
  • 14:44: The electromagnetic field outside the black hole knows about the charge inside the black hole.

2017-11-08: Zero-Point Energy Demystified

  • 00:43: ... the electromagnetic field alone, this energy density has been estimated to be up to a crazily high ...
  • 08:35: ... saw last week, the theoretical density of the vacuum energy due to the electromagnetic field is estimated by integrating the energy in all possible frequency modes ...

2017-11-02: The Vacuum Catastrophe

  • 02:51: Let's think in terms of the electromagnetic field.

2017-09-28: Are the Fundamental Constants Changing?

  • 03:42: In the language of quantum field theory, it's the coupling strength between the electromagnetic field and a charged field like the electron field.

2017-07-26: The Secrets of Feynman Diagrams

  • 02:02: The first and most predictively powerful quantum field theory, QED, talks about the interaction of the electron field with the electromagnetic field.
  • 02:50: For this to be interesting, the electric and electromagnetic fields need to interact.

2017-07-19: The Real Star Wars

  • 15:56: ... with other fields, be it the Higgs field for the bare mass, or the electromagnetic field for the self energy correction to that ...
  • 16:51: Every one of those vertices represents an interaction between the electron and the electromagnetic fields.

2017-07-12: Solving the Impossible in Quantum Field Theory

  • 01:38: In old-fashioned classical electrodynamics, we think of each electron as producing an electromagnetic field.
  • 02:06: We think of the electromagnetic field as existing everywhere in space, whether or not there's an electron present.

2017-07-07: Feynman's Infinite Quantum Paths

  • 09:54: So a photon is an excitation of vibration in the electromagnetic field.
  • 10:10: ... includes the probability amplitude of a photon's energy moving from the electromagnetic field into, say, the electron field, where it might become an ...
  • 13:04: Jakub asks, what is the difference between the electromagnetic field of quantum field theory and the aether?

2017-06-28: The First Quantum Field Theory

  • 01:30: Quantum ElectroDynamics, QED, provides this description for one such field, the ElectroMagnetic field.
  • 04:16: Light is a wave in the electromagnetic field.
  • 04:19: The electromagnetic field is similar to the density field in a room full of air.
  • 04:36: The electromagnetic field is a quantum field and so these oscillations have a minimum amplitude.
  • 07:12: Instead of quantizing particles' physical properties like position and momentum, as did Schrodinger, Dirac quantized the electromagnetic field itself.
  • 10:48: Remember, this approach began with thinking of photons as oscillations in the electromagnetic field.

2017-06-21: Anti-Matter and Quantum Relativity

  • 04:31: So for fast moving electrons and for electrons in electromagnetic fields, the Schrodinger equation gives the wrong answers.
  • 06:02: The Dirac equation perfectly predicts the motion of electrons at any speed, even in an electromagnetic field.
  • 06:38: ... example, a lone electron moving in an electromagnetic field could keep releasing energy as light infinitely, and sink lower and ...

2017-03-29: How Time Becomes Space Inside a Black Hole

  • 12:28: Colin Brown asks if the spin flip oscillation is only dependent on the electromagnetic field oscillation.
  • 12:36: Firstly yeah, these time crystals oscillate at an integer multiple of the electromagnetic field frequency.

2016-07-27: The Quantum Experiment that Broke Reality

  • 02:01: Of course, we now know that light is a wave in the electromagnetic field thanks to the work of James Clerk Maxwell a century later.
  • 02:33: So each photon is a little bundle of waves, waves of electromagnetic field, and each bundle can't be broken into smaller parts.
  • 09:54: ... we know that light is a wave in the electromagnetic field and quantum field theory tells us that all fundamental particles are ...
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