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2022-05-04: Space DOES NOT Expand Everywhere
- 03:48: ... is getting bigger. But what does that mean beyond the math? What’s physically ...
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2022-02-10: The Nature of Space and Time AMA
- 00:03: ... don't like to think about the expansion of the universe as of objects physically moving through space away from each other um because that would imply ...
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2021-10-13: New Results in Quantum Tunneling vs. The Speed of Light
- 10:35: For a real, physical experiment, we need a clock that’s physically measurable.
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2021-04-21: The NEW Warp Drive Possibilities
- 03:54: The Alcubierre warp field may be a valid solution to the Einstein field equations, but that doesn’t mean it’s physically possible.
- 04:01: ... to solve these equations we input a physically possible distribution of mass, energy, on the right side and it spits ...
- 04:31: ... that are meant to restrict the allowable energy distributions to what is physically possible Alcubierre’s field breaks all of these energy conditions, and ...
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2021-03-16: The NEW Crisis in Cosmology
- 14:47: ... what does this mean physically? Does it mean anything physically? That's less clear, ...
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2020-10-20: Is The Future Predetermined By Quantum Mechanics?
- 03:04: The wave function can be thought of as a state in which all physically possible realities intermingle.
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2020-04-22: Will Wormholes Allow Fast Interstellar Travel?
- 09:44: ... the positive energy density of the mass of the plates themselves for any physically possible ...
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2018-04-18: Using Stars to See Gravitational Waves
- 05:28: That's beyond any gravitational wave interferometer that we could ever physically construct.
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2017-01-19: The Phantom Singularity
- 10:55: Anyway the upshot is that it's really a breeze to drop through the event horizon, both physically and mathematically.
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2016-12-08: What Happens at the Event Horizon?
- 01:38: For example, are objects falling through the event horizon really physically frozen there from the point of view of the outside universe?
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2016-08-10: How the Quantum Eraser Rewrites the Past
- 09:33: So perhaps they can even affect coherence and decoherence retroactively and physically without making a causal mess.
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2016-04-20: Why the Universe Needs Dark Energy
- 00:08: ... the largest scales-- of a volume of space vastly beyond our capacity to physically explore and at a time billions of years in the ...
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2015-10-28: Is The Alcubierre Warp Drive Possible?
- 03:19: There's just no guarantee that the resulting mass/energy distribution would be physically meaningful.
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2015-10-22: Have Gravitational Waves Been Discovered?!?
- 00:51: Einstein is amazing, because every one of these predictions from his beautiful work has been physically tested and verified.
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2015-08-19: Do Events Inside Black Holes Happen?
- 03:37: It's all the events that have ever or will ever take place there, according to observers who are physically there.
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2015-07-15: Can You Trust Your Eyes in Spacetime?
- 07:10: I want to wrap up by going back tangent vectors for a second because I haven't told you yet what they represent physically.
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2015-05-27: Habitable Exoplanets Debunked!
- 10:07: Except physically, that's not true.
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2015-03-18: Can A Starfox Barrel Roll Work In Space?
- 00:47: --might be the most physically viable part of the game.
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