Search PBS Space Time


2022-03-23: Where Is The Center of The Universe?

  • 14:15: Brilliant has a lesson on special relativity that includes interactive challenges and problems to solve.

2022-02-10: The Nature of Space and Time AMA

  • 00:03: ... as objects moving relative to each other due to their velocities in special relativity okay so the answer is that two types of motion are indistinguishable ...

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

  • 01:33: Special relativity enshrined the speed of light as the absolute cosmic speed limit.

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

  • 13:59: Brilliant has a lesson on special relativity that includes interactive challenges and problems to solve.

2021-10-13: New Results in Quantum Tunneling vs. The Speed of Light

  • 05:27: ... we’ve said before, his theory of special relativity explains that if you move faster than light, you can send signals into ...
  • 07:57: These new guys use the Dirac equation, which properly incorporates special relativity and so we can take any emerging FTL motion more seriously.
  • 12:54: Brilliant has a lesson on special relativity that includes interactive challenges and problems to solve.

2021-02-10: How Does Gravity Warp the Flow of Time?

  • 02:54: It would actually be really helpful if you’ve already seen our recent video on paradoxes in special relativity.
  • 03:28: This is from special relativity, rather than general relativity, but even special relativity seems a near miraculous insight.
  • 04:48: ... we have to invoke the great founding axiom of special relativity - that the speed of light is always measured to be the same for all ...
  • 09:25: ... the flow of time between an inertial and accelerating frame using pure special relativity with its kinematic time dilation plus shifting reference frames, OR you ...

2021-01-19: Can We Break the Universe?

  • 00:43: ... we’re going to delve into a couple of the most famous paradoxes of special relativity and see why, against our intuition, the universe really does work in ...
  • 01:09: ... Special relativity tells us that the clocks on the spaceship will appear to tick more ...
  • 04:27: One of the consequences of special relativity is that different observers give different accounts of what events are simultaneous.

2020-12-22: Navigating with Quantum Entanglement

  • 12:07: ... - you once asked me a question about space contraction in special relativity and whether or not a spaceship could travel so fast it bumped into its ...

2020-10-20: Is The Future Predetermined By Quantum Mechanics?

  • 11:27: ... figured out how to make Bohmian mechanics work properly with special relativity. ...

2020-10-13: Do the Past and Future Exist?

  • 08:29: ... that’s the effect of Einstein’s special relativity - space and time tilt into each other, so that different observers will ...

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

  • 07:49: He sought to develop a quantum mechanical wave equation that agreed with Einstein’s special relativity.

2020-08-10: Theory of Everything Controversies: Livestream

  • 00:00: ... the experience of doing the science but i never put in a paper doubly special relativity is true because it's it's especially beautiful the way the parts fit ...

2020-07-28: What is a Theory of Everything: Livestream

  • 00:00: ... that is called quantum field theory based upon quantum mechanics and special relativity that so accurately describes everything that goes on at the smallest ...

2020-07-08: Does Antimatter Explain Why There's Something Rather Than Nothing?

  • 04:48: ... CPT theorem says that, assuming our knowledge of special relativity and the Standard Model are correct, then CPT symmetry must hold. But, we ...

2020-05-11: How Luminiferous Aether Led to Relativity

  • 11:42: ... two things - it inspired the Lorentz transformation, critical to both special relativity and then his general theory of relativity that ultimately overthrew ...

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

  • 00:00: ... to be able to say whether Wolfram's claim is right that it can recover special relativity general relativity quantum field theory and all this stuff so I maybe ...

2019-12-17: Do Black Holes Create New Universes?

  • 12:36: has a course on special relativity that includes interactive challenges and problems to solve.

2019-10-21: Is Time Travel Impossible?

  • 00:58: ... first approach to time travel uses only special relativity, which describes how intervals of time and space are stretched or ...
  • 02:23: ... notice I said “regular mass.” We can hack the equations of special relativity by allowing mass to take values in the weird realm of imaginary or ...
  • 03:14: So special relativity isn’t much help.
  • 03:16: ... we still have the general theory of relativity, which incorporates special relativity, but also explains the force of gravity as a result of curvature in the ...

2019-06-17: How Black Holes Kill Galaxies

  • 11:24: ... interesting and challenging problems so whether you wanna learn about special relativity, quantum physics or brush up on your complex algebra and differential ...

2018-12-20: Why String Theory is Wrong

  • 15:37: ... whether you want to learn about special relativity in quantum physics or brush up on your complex algebra and differential ...

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

  • 00:02: ... interesting and challenging problems so whether you want to learn about special relativity quantum physics or brush up on your complex algebra and differential ...

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

  • 01:56: General relativity incorporates the earlier special relativity, which describes how our perceptions of space and time also depend on motion.
  • 03:06: Nowadays, modern quantum field theories fully incorporate the melding of space and time predicted by special relativity.

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

  • 09:03: First, we need to upgrade the Schrodinger equation to the Dirac equation so it works with Einstein's special relativity.

2018-04-04: The Unruh Effect

  • 01:26: We just need a little special relativity and a space-time diagram.
  • 05:06: ... system we use to describe a constantly accelerating observer in special relativity, Rindler coordinates, devised by Austrian physicist Wolfgang Rindler who, ...

2018-02-14: What is Energy?

  • 09:09: The way it uses energy is inherently consistent with special relativity, unlike Hamiltonian mechanics.

2018-01-17: Horizon Radiation

  • 00:00: ... combines the weirdness of quantum mechanics with, well, the weirdness of special relativity, to give quantum field ...
  • 03:42: Special relativity is built in.

2017-08-10: The One-Electron Universe

  • 04:58: In a quantum field theory that's consistent with Einstein's special relativity, all particles must be symmetric under what we call CPT transformation.

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

  • 13:23: ... Haas asked how Feynman's path integral method, which is compatible with special relativity, can derive Schrodinger's equation when Schrodinger's equation is not ...

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

  • 08:16: That means it treats space and time symmetrically and so works very naturally with Einstein's theory of special relativity.

2017-06-28: The First Quantum Field Theory

  • 14:26: ... 100 asks, "Why was it possible to make quantum mechanics compatible with special relativity when we're still struggling to reconcile it with general relativity?" ...

2017-02-15: Telescopes of Tomorrow

  • 11:10: So last time, I showed you how you can visualize the effects of special relativity on spacetime using geometry.

2017-02-02: The Geometry of Causality

  • 01:16: Special relativity tells us that our experience of both distance and time are, well, relative.
  • 04:29: ... down which time flows, and etched into spacetime by the equations of special relativity. ...

2016-02-17: Planet X Discovered?? + Challenge Winners!

  • 03:49: ... see, special relativity tells us that a clock that's moving relative to you will have a slower ...

2016-01-27: The Origin of Matter and Time

  • 00:00: [MUSIC PLAYING] Einstein's theory of special relativity has shown us mass and time are not the concrete things we imagine them to be.
  • 04:40: ... of the speed of light, the other fundamental principle of Einstein's special relativity at play here is the Galilean relativity of ...
  • 10:14: So a lot of you independently realized that the time dilation of special relativity seems to generate a paradox.
  • 11:03: In this case, it's that special relativity doesn't fully describe the scenario here.
  • 11:16: And special relativity only describes the relative effects on time and space due to a constant relative motion.

2016-01-20: The Photon Clock Challenge

  • 00:02: Today we have a special relativity challenge question for you.
  • 00:35: And the resulting slowing of clock ticks due to motion is the time dilation of Einstein's theory of special relativity.

2016-01-13: When Time Breaks Down

  • 04:28: This effect is the time dilation of Einstein's special relativity.

2015-07-22: SPECIAL ANNOUNCEMENT + Flat Spacetime Geometry Comments

  • 04:24: It is tricky to talk about the car's frame of reference in special relativity.

2015-07-15: Can You Trust Your Eyes in Spacetime?

  • 01:07: Now, we're not going to do a complete treatment of special relativity or all aspects of flat spacetime geometry.

2015-07-02: Can a Circle Be a Straight Line?

  • 07:57: You should watch as many videos about special relativity as you can no matter who's made them.

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

  • 10:26: But yes, I happen to think that special relativity suggests that free will is an illusion.
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