|
2022-01-12: How To Simulate The Universe With DFT
- 16:08: But it would need to reach Earth’s surface moving at 10 or so km/s to get stuck in the planet - perhaps after a couple of passes.
|
|
2021-12-29: How to Find ALIEN Dyson Spheres
- 00:44: ... satisfy humanity’s current energy needs by covering a tiny fraction of Earth’s surface with solar cells. And we should probably do that by the ...
|
|
2021-12-20: What Happens If A Black Hole Hits Earth?
- 09:03: ... seismic waves would reach all points on the Earth’s surface. Even at the lowest mass possible for a primordial black hole it will ...
|
|
2021-09-15: Neutron Stars: The Most Extreme Objects in the Universe
- 02:35: ... form. Pressure increases as you go down, so that at Earth’s surface the weight of all that gas on top of your head is about ...
|
|
2020-12-22: Navigating with Quantum Entanglement
- 04:32: At Earth’s surface it’s about 30 microTesla, which is about 100 times weaker than a fridge magnet.
|
|
2020-10-13: Do the Past and Future Exist?
- 13:36: ... from Earth - having transported to Venus on rocks that were blasted from Earth's surface by ...
|
|
2020-10-05: Venus May Have Life!
- 02:43: ... 50km altitude both the temperature and pressure are close to those at Earth’s surface, with the only problem being that pesky sulphuric acid ...
|
|
2020-09-01: How Do We Know What Stars Are Made Of?
- 08:43: ... they varied between stars, but were generally similar to what we find on Earth’s surface - but with a couple of extreme ...
|
|
2019-09-03: Is Earth's Magnetic Field Reversing?
- 05:03: These flows are then twisted into helixes by the coriolis force – the same effect that produces hurricanes on Earth’s surface.
|
|
2018-12-06: Did Life on Earth Come from Space?
- 00:37: ... of eleven point two kilometers per second that's the escape velocity at Earth's surface that requires an acceleration of up to hundreds of thousands of GS and ...
|
|
2018-01-10: What Do Stars Sound Like?
- 11:02: He points out that they say the Earth's surface would be incinerated by such an event.
|
|
2017-08-24: First Detection of Life
- 06:06: Galileo also observed the spectrum of Earth's surface and took color photographs.
|
|
2017-08-16: Extraterrestrial Superstorms
- 01:59: These incoming winds travel such large distances across the Earth's surface that they are subject to the Coriolis force.
|
|
2017-04-19: The Oh My God Particle
- 05:33: At the lowest energies, the cosmos flings one particle every second per square meter of the Earth's surface.
|
|
2016-09-14: Self-Replicating Robots and Galactic Domination
- 12:03: But even solar power stations at Earth's surface will soon be a viable solution for most of our current energy needs.
|
|
2016-07-06: Juno to Reveal Jupiter's Violent Past
- 09:13: ... Earths, a weird, mixed up asteroid belt, and an early obliteration of Earth's surface, and, perhaps, a missing ninth ...
|
|
2016-04-13: Will the Universe Expand Forever?
- 02:45: ... I throw it at 11 kilometers per second, which is the escape velocity on Earth's surface, then, by the time it almost stops moving, it will be so far away that ...
|
|
2016-03-16: Why is the Earth Round and the Milky Way Flat?
- 01:07: ... has to factor in the changing direction of down due to the curvature of Earth's surface over its four mile ...
|
|
2016-02-03: Will Mars or Venus Kill You First?
- 06:56: It's a pleasant 0.9 times Earth's gravity, and the atmospheric pressure is around that of Earth's surface.
|
|
2016-01-06: The True Nature of Matter and Mass
- 06:44: Holding up our photon box against Earth's surface gravity has to be just as hard as trying to accelerate it at 1 g in empty space.
|
|
2015-11-25: 100 Years of Relativity + Challenge Winners!
- 03:53: ... of minus 9 meters per second squared or around one ten billionth of Earth's surface ...
|
|
2015-08-05: What Physics Teachers Get Wrong About Tides!
- 02:39: Forget about the oceans for a minute and just imagine two small blocks, A and B, at opposite ends of the Earth's surface along the Earth/Moon line.
- 03:41: ... object's resulting acceleration relative to Earth's surface is called the total acceleration of that object, and it should be ...
- 04:54: So relative to the Earth's surface, the block's tidal acceleration is almost radially inward-- in other words, down.
- 05:01: In fact, if we map out the tidal acceleration vectors that you'd see at different points on Earth's surface, they look like this.
- 05:15: At most places, those vectors are largely tangent to Earth's surface, which would push water sideways.
- 07:03: ... when water in a swimming pool rises a tiny amount, Earth's surface is also rising by tiny amount, making the change in water level relative ...
- 13:05: ... lot of you were expressing confusion about how two points on Earth's surface can both be "really" accelerating if Earth's surface itself is not ...
- 13:22: ... relative to that clock, are the coordinate positions of two points on Earth's surface ...
- 13:46: For points on Earth's surface, that's not true.
- 13:22: ... relative to that clock, are the coordinate positions of two points on Earth's surface changing? ...
|
|
2015-07-29: General Relativity & Curved Spacetime Explained!
- 00:27: ... says that a frame on earth's surface is inertial, and relative to that frame, a freely falling apple ...
- 04:41: In contrast, the world line of a point on Earth's surface is not a geodesic.
- 04:48: So does that mean that Earth's surface has to be expanding radially?
|
|
2015-07-15: Can You Trust Your Eyes in Spacetime?
- 01:32: I'm not glued to Earth's surface.
|
|
2015-07-08: Curvature Demonstrated + Comments
- 05:00: Therefore, you can determine just by living on Earth's surface that Earth's surface is a curved space.
|
|
2015-06-17: How to Signal Aliens
- 06:35: ... I meant to get across is that, since Earth's surface obviously is not accelerating outward in the ordinary sense of the word, ...
|
|
2015-06-03: Is Gravity An Illusion?
- 05:39: ... gravity from Earth is also fake, a side effect generated because Earth's surface is really accelerating ...
- 05:52: ... upward if you can identify an inertial frame relative to which Earth's surface accelerates upward, and there's obviously no inertial frame like that, ...
|
|
2015-05-06: Should the First Mars Mission Be All Women?
- 05:35: ... and then estimate the cost of getting the food plus all that fuel off of Earth's surface to begin ...
|
|
2015-04-01: Is the Moon in Majora’s Mask a Black Hole?
- 01:52: ... Earth's moon would be ripped apart if it got within 12,000 kilometers of Earth's surface. ...
|
|
2015-02-11: What Planet Is Super Mario World?
- 04:00: On a planet with eight times Earth's surface gravity, your blood is eight times as heavy.
|