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2022-03-23: Where Is The Center of The Universe?
- 03:04: General relativity can be used to calculate the spacetime curvature produced by the Earth or the Sun to determine their gravitational effects.
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2022-02-23: Are Cosmic Strings Cracks in the Universe?
- 10:09: ... The other way to spot cosmic strings also relies on a gravitational effect: gravitational lensing - which is the warping of background ...
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2022-01-27: How Does Gravity Escape A Black Hole?
- 08:54: To experience the gravitational effect of a massive object, the information about the presence of that mass does have to be able to reach you.
- 09:12: ... below the event horizon, but we can see its past mass, and it’s the gravitational effect of the past mass that we actually ...
- 01:55: When you use those equations to calculate the speed of various gravitational effects, they also turn out to be the speed of light.
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2022-01-19: How To Build The Universe in a Computer
- 06:00: ... to clump particles together and consider only their summed gravitational effect. ...
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2021-02-24: Does Time Cause Gravity?
- 10:56: ... inflation it’s believed that quantum gravitational effects would have been very important, so if we can get any type of signal from ...
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2020-05-18: Mapping the Multiverse
- 12:23: That pressure produces its own gravitational effect on par with the black hole itself, accelerating the streams further.
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2020-05-04: How We Know The Universe is Ancient
- 11:07: ... - which is mostly in dark matter - can be found by adding up the gravitational effect in galaxies and in galaxy clusters, and also by tracking the past ...
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2019-08-06: What Caused the Big Bang?
- 02:43: Mostly, the stuff in the universe pulls the universe back together; resists the expansion with a positive gravitational effect.
- 02:50: But there's one type of energy that can have an anti gravitational effect.
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2019-04-24: No Dark Matter = Proof of Dark Matter?
- 00:03: ... of Dunkel materia a dark matter invisible to the telescope but whose gravitational effect held the cluster together as with many of his wiki's predictions like ...
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2019-04-03: The Edge of an Infinite Universe
- 14:49: Every particle, every gravitational effect in the bulk is represented by quantum fields on an infinitely distant surface.
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2019-02-20: Secrets of the Cosmic Microwave Background
- 07:42: ... in the Universe Energy results in positive curvature due to its positive gravitational effect On the other hand an expanding universe with no energy would have ...
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2019-01-24: The Crisis in Cosmology
- 01:42: ...the rate of expansion of the universe, combined with the gravitational effect...
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2019-01-09: Are Dark Matter And Dark Energy The Same?
- 03:10: ... has competing effects – its positive energy density gives it a positive gravitational effect but its negative pressure is ...
- 04:06: Forgetting that pressure stuff for a moment, positive masses and energies always have a positive gravitational effect.
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2018-09-20: Quantum Gravity and the Hardest Problem in Physics
- 04:38: ... that approach completely fails when you have strong gravitational effects on the smaller scales of space and time, like the central singularity of ...
- 10:46: When you have strong gravitational effects on the quantum scale, the self-energy corrections blow up to infinity.
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2018-09-05: The Black Hole Entropy Enigma
- 00:53: Also, we've seen them in their gravitational effects on their surrounding space and in the gravitational waves caused when they merge.
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2017-11-08: Zero-Point Energy Demystified
- 05:32: The gravitational effect of energy depends on its absolute value.
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2017-11-02: The Vacuum Catastrophe
- 05:07: Vacuum energy should produce a gravitational effect, and a huge vacuum energy should produce a huge gravitational effect.
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2017-10-25: The Missing Mass Mystery
- 11:21: A non-zero vacuum energy would have a gravitational effect.
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2017-02-15: Telescopes of Tomorrow
- 09:06: ... the distant universe as their brightnesses fluctuate due to the changing gravitational effect of nearby massive ...
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2016-12-14: Escape The Kugelblitz Challenge
- 04:42: Now, light has energy and so has a gravitational effect.
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2016-11-09: Did Dark Energy Just Disappear?
- 00:52: They expected to see that this expansion rate was slowing down due to the gravitational effect of all of the matter in the universe.
- 06:35: ... dark energy, and there are things that slow expansion, which is just the gravitational effect of regular energy, and that's mostly dark matter, but also stars, ...
- 11:03: ... measure tells us that there has to be something out there countering the gravitational effect of matter and flattening the geometry of ...
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2016-04-20: Why the Universe Needs Dark Energy
- 00:52: ... of the universe and the resistance to this expansion due to the gravitational effect of everything it ...
- 10:28: ... of the universe does include dark matter, which we can measure by its gravitational effect in several independent ...
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2016-04-13: Will the Universe Expand Forever?
- 05:40: But that oomph is resisted by the gravitational effect of all the master and energy in the universe.
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2016-01-06: The True Nature of Matter and Mass
- 01:22: Let's ignore the gravitational effect of mass for the moment, and just consider mass as the degree to which an object resists being accelerated.
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2015-08-19: Do Events Inside Black Holes Happen?
- 13:33: ... are gravitational effects from the Sun and Moon that do the same thing, but they're highly, highly ...
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2015-07-02: Can a Circle Be a Straight Line?
- 01:57: We'll end up seeing that all the supposedly gravitational effects on motion can be accounted for just by the geometry of spacetime.
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