Search PBS Space Time

Results

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

  • 09:34: ... gauge field in the Lagrangian   that allows the angle of this rotational degree  of freedom to vary. Call that angle ...

2021-09-21: How Electron Spin Makes Matter Possible

  • 02:18: ... behavior of groups of particles that have two properties: 1) this weird rotational symmetry, and 2) indistinguishability - which is just the fact that all ...
  • 03:19: ... Crazily the bands disentangle every 720 degrees. So a spinor’s rotational weirdness is not necessarily all that “quantum” - it’s a natural ...
  • 06:49: ... can “wave” through space, but it includes another wavy part. It has its rotational degree of freedom in which a full wave cycle is a 720 degree rotation. ...
  • 14:26: ... because electrons are indistinguishable and they obey a simple, if odd, rotational symmetry. Ironically, to prove the structural integrity of matter I had ...
  • 06:49: ... can “wave” through space, but it includes another wavy part. It has its rotational degree of freedom in which a full wave cycle is a 720 degree rotation. In that ...
  • 02:18: ... behavior of groups of particles that have two properties: 1) this weird rotational symmetry, and 2) indistinguishability - which is just the fact that all electrons, ...
  • 14:26: ... because electrons are indistinguishable and they obey a simple, if odd, rotational symmetry. Ironically, to prove the structural integrity of matter I had to ...
  • 03:19: ... Crazily the bands disentangle every 720 degrees. So a spinor’s rotational weirdness is not necessarily all that “quantum” - it’s a natural function of how ...

2021-09-07: First Detection of Light from Behind a Black Hole

  • 11:18: We have other reasons to think that this iron-laced wind also has a powerful rotational component.

2021-07-07: Electrons DO NOT Spin

  • 11:09: ... rotation,   but rather from the fact that they  have a rotational degree of freedom which leads to a conserved  quantity associated ...
  • 13:00: ... you don’t fall through the floor right now. But why should this obscure rotational property lead to such fundamental behavior? Well this  is all part ...
  • 11:09: ... rotation,   but rather from the fact that they  have a rotational degree of freedom which leads to a conserved  quantity associated with ...
  • 13:00: ... you don’t fall through the floor right now. But why should this obscure rotational property lead to such fundamental behavior? Well this  is all part of what ...
  • 12:44: ... difference in the rotational  properties of fermions and bosons   results in profound ...

2021-06-23: How Quantum Entanglement Creates Entropy

  • 16:39: ... space. But we know for sure that this universe has a continuous rotational symmetry - there   is no preferred angle. That’s the basis for ...

2021-04-07: Why the Muon g-2 Results Are So Exciting!

  • 03:37: The strength of that rotational pool or the talk, is defined by the objects dipole moment.

2021-02-17: Gravitational Wave Background Discovered?

  • 00:00: ... due to their intense magnetic fields they also rotate rapidly with the rotational axis offset from the magnetic poles causing those jets to sweep through ...

2020-12-22: Navigating with Quantum Entanglement

  • 04:12: This “declination” points towards the magnetic poles, which are offset from the true poles defined by Earth’s rotational axis.

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

  • 08:04: ... thing we saw was that rotating black holes can donate some of their rotational energy to particles or waves that pass close by. This is the Penrose ...

2020-05-18: Mapping the Multiverse

  • 05:00: It’s surrounded by a second ergosphere, where again the rotational flow of space exceeds light speed.

2020-03-31: What’s On The Other Side Of A Black Hole?

  • 13:31: ... better animations. But how big is the bomb? Well the limit is as much rotational energy as the black hole contains. for a maximally rotating black hole ...

2020-03-24: How Black Holes Spin Space Time

  • 09:37: ... energy is extracted from the rotational energy in the ergosphere, slowing the black hole’s spin. To get a little ...
  • 10:11: ... through the ergosphere in the direction of rotation will also extract rotational energy and emerge amplified in a process called ...
  • 10:27: ... way the rotational energy can be extracted with, in principle, 100% efficiency. Oh, and you ...
  • 10:51: ... light. Ultimately, the energy of that light is extracted from the rotational energy of the black hole. It’s hypothesized that some jets observed from ...
  • 09:37: ... energy is extracted from the rotational energy in the ergosphere, slowing the black hole’s spin. To get a little more ...
  • 10:11: ... through the ergosphere in the direction of rotation will also extract rotational energy and emerge amplified in a process called ...
  • 10:27: ... way the rotational energy can be extracted with, in principle, 100% efficiency. Oh, and you can ...
  • 10:51: ... light. Ultimately, the energy of that light is extracted from the rotational energy of the black hole. It’s hypothesized that some jets observed from ...

2019-09-03: Is Earth's Magnetic Field Reversing?

  • 06:47: Those loops form magnetic tubes around Earth’s rotational axis.

2019-05-01: The Real Science of the EHT Black Hole

  • 09:19: ... black hole mass and spin rate, while they were able to nail down the rotational axis rotation based on the jet that we see leaving the ...
  • 10:01: ... asymmetry in the ring tells us the rotational direction of the vortex, so combine that with the axis direction from ...
  • 09:19: ... black hole mass and spin rate, while they were able to nail down the rotational axis rotation based on the jet that we see leaving the ...
  • 10:01: ... asymmetry in the ring tells us the rotational direction of the vortex, so combine that with the axis direction from the jet and ...

2019-03-13: Will You Travel to Space?

  • 14:38: ... Even in a vacuum, that internal vibration is enough to randomize its rotational ...

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

  • 14:12: And the incoming object absorbs some of that rotational energy and get flung out at a higher speed.
  • 14:18: The loss of rotational energy by the black hole also means a loss of mass.
  • 14:12: And the incoming object absorbs some of that rotational energy and get flung out at a higher speed.
  • 14:18: The loss of rotational energy by the black hole also means a loss of mass.

2018-09-05: The Black Hole Entropy Enigma

  • 06:29: There's also the Penrose process in which you can extract rotational energy of a spinning black hole.

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

  • 02:53: A perfect sphere is continuously symmetric under rotational translations.

2017-12-20: Extinction by Gamma-Ray Burst

  • 07:48: The rotational axis of the star will define the direction of the jet in the event that this Wolf-Rayet star does produce a gamma-ray burst.
  • 08:26: It's the star's rotational axis that defines the direction of the jet.
  • 08:30: But the orbital axis of a binary system and the rotational axis of its stars are often correlated, so we may have dodged a bullet in this case.
  • 07:48: The rotational axis of the star will define the direction of the jet in the event that this Wolf-Rayet star does produce a gamma-ray burst.
  • 08:26: It's the star's rotational axis that defines the direction of the jet.
  • 08:30: But the orbital axis of a binary system and the rotational axis of its stars are often correlated, so we may have dodged a bullet in this case.

2017-05-10: The Great American Eclipse

  • 04:40: Every year, the moon steals a little bit of Earth's rotational kinetic energy and drifts about 3.8 centimeters away from us.

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

  • 01:07: ... ignoring the complications of Hawking radiation or black hole rotational growth, the simplest black hole of Einstein's general theory of ...

2015-04-29: What's the Most Realistic Artificial Gravity in Sci-Fi?

  • 02:33: It's just the radius of the rotating structure multiplied by the square of its rotational speed in radians per second.
  • 05:31: ... achieve 1 g, Ringworld's rotational velocity would be small enough that, just like on Earth, Coriolis ...
  • 08:10: ... is I can't actually find anything that the game gets wrong per se in its rotational artificial ...
  • 02:33: It's just the radius of the rotating structure multiplied by the square of its rotational speed in radians per second.
  • 05:31: ... achieve 1 g, Ringworld's rotational velocity would be small enough that, just like on Earth, Coriolis effects would ...

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

  • 05:29: I don't have any numbers on the mass and rotational inertia of a "Star Fox" Arwing.
23 result(s) shown.