
20221012: The REAL Possibility of Mapping Alien Planets!
 09:31: ... that intense upclose solar radiation. That propels the craft on a trajectory that will take them out of the solar system and towards our first ...


20220803: What Happens Inside a Proton?
 08:58: ... diagram you’re actually adding infinite possible trajectories using Feynman path ...


20220330: Could The Universe Be Inside A Black Hole?
 04:07: That trace will define the path of the thrown ball, but you can also extrapolate beyond the ball’s trajectory.


20220127: How Does Gravity Escape A Black Hole?
 14:55: We said that the roomsized computer used to calculate the Apollo trajectories had the computing power of a smart phone.


20220119: How To Build The Universe in a Computer
 02:56: ... Isaac Newton it had been possible to write down equations describing the trajectories of a pair of massive bodies moving in each other’s gravitational ...
 04:17: And I would hope so, because this is essentially how we calculate the trajectories that place people on the moon or land robots on comets.


20211102: Is ACTION The Most Fundamental Property in Physics?
 00:02: ... of least time?. If light changes speed between media, then the fastest trajectory is no longer a straight line. With this principle of least time, Fermat ...
 01:22: ... if there was a similar property that could be minimized to determine the trajectories of matter as well as light? There were some efforts  for example Euler ...
 08:39: ... between its source and the screen not as a particle with a welldefined trajectory, but as a quantum wavefunction that represents all possible paths it ...
 09:24: ... action says that a particle will always land where the action of the trajectory is at a minimum or maximum. That should correspond only to the central ...
 12:16: ... all of this together. Configuration space is the space of all possible trajectories given our object’s constraints. In the case of the ball, configuration ...


20211005: Why Magnetic Monopoles SHOULD Exist
 07:02: To plot that trajectory you add up all possible paths of the electron, including paths to the left and to the right at the string.


20210907: First Detection of Light from Behind a Black Hole
 08:47: ... emerging picture is that gas falls in along some trajectories, but then gets lifted off the accretion disk by the blazing radiation of ...


20210609: Are We Running Out of Space Above Earth?
 03:59: And their future trajectories can be calculated to predict possible future collisions.


20210323: Zeno's Paradox & The Quantum Zeno Effect
 02:58: ... position; its wavefunction is spread between the start and end of the trajectory. ...
 04:41: ... observation resets the trajectory to the start, at which point the wavefunction has to start evolving from ...


20210316: The NEW Crisis in Cosmology
 16:28: ... For those who don't know, the path integral calculates the trajectory of a quantum object by adding up all possible and even ...


20210112: What Happens During a Quantum Jump?
 09:47: And that transition appeared to be perfectly described by theory  in this case quantum trajectory theory.
 10:19: ... that the quantum jump onset was predictable, and that its trajectory was extremely well described by theoretical calculations, it’s tempting ...


20201215: The Supernova At The End of Time
 13:37: ... to "remember" the future collision you have to know the present trajectories of these two farapart ...


20201118: The Arrow of Time and How to Reverse It
 06:57: ... typically, on very small scales due to random alignments of particle trajectories or however else energy is moving around. Entropy can decrease, reach a ...


20200630: Dissolving an Event Horizon
 08:30: More generally, there is no trajectory into an extremal black hole that can add angular momentum from the trajectory or the “orbit” itself.


20200518: Mapping the Multiverse
 08:13: There are trajectories in this torus that lead you back to your starting location  in both space AND time.


20200331: What’s On The Other Side Of A Black Hole?
 01:53: ... in both these regions, the Schwarzschild metric canNOT be used to plot a trajectory that actually crosses the event horizon. That’s because at the event ...
 03:46: ... Kruskal–Szekeres coordinates improved our map by enforcing that the trajectory of light always be at a 45 degree angle. In the resulting ...


20200324: How Black Holes Spin Space Time
 05:14: ... We see it around any rotating mass. In frame dragging, any “freefall” trajectory  the path taken by an object moving freely in the gravitational field  ...
 09:06: ... is dropped into the ergosphere of a kerr black hole on a carefully tuned trajectory. ...


20200316: How Do Quantum States Manifest In The Classical World?
 16:29: ... produce a new big bang? Could a random perfect alignment of all particle trajectories produce a big bang density? Maybe  some physicsts think this may be how ...
 17:40: ... equal. You can imagine the wavefunction as consisting of very many fine trajectories  possible histories by which the system can evolve. Some final results ...


20200224: How Decoherence Splits The Quantum Multiverse
 04:22: We can think of those paths as slices of the wavefunction that represent possible trajectories.
 04:28: The probability of the photon having reached this particular spot is determined by the sum of all possible trajectories to that spot.


20200120: Solving the Three Body Problem
 05:25: ... them one at a time. A sufficiently small section of any gravitational trajectory can be approximated with an exact, analytical solution  perhaps a ...


20190320: Is Dark Energy Getting Stronger?
 16:12: They followed suborbital trajectories, which left them in space for only minutes.


20190313: Will You Travel to Space?
 08:09: ... Richard means when he says pointtopoint travel. These spacekissing trajectories could one day allow us to travel halfway across the globe in a couple of ...
 12:08: ... made its first successful trip to space, and not on a suborbital trajectory. ...


20190130: Perpetual Motion From Negative Mass?
 06:48: A socalled geodesic path is the trajectory of an object in a gravitational field assuming no additional forces.
 07:31: In the analogy a positive mass depresses the sheet so that the trajectory of an positive mass apple bends towards the massive object.
 07:40: But those trajectories only depend on the active gravitational mass of the central object, and on the velocity and starting position of the apple.
 08:08: Trajectories curve away from the source, and that looks like a repulsive force.


20181212: Quantum Physics in a Mirror Universe
 00:02: ... unaltered in that mirror world Newton's laws will still give the balls trajectory those laws work the same no matter the direction of motion in fact if we ...


20181121: 'Oumuamua Is Not Aliens
 00:44: But what made this object special was its trajectory.
 09:22: ... socked from its orbit by impact and or gravitational interaction into a trajectory that will send it to the ...


20181114: Supersymmetric Particle Found?
 07:02: ... coming in at an angle, skimming the arc of the earth on a shallow trajectory. ...


20181031: Are Virtual Particles A New Layer of Reality?
 07:46: And that uncertain momentum gives them real locations, real trajectories through space.


20180920: Quantum Gravity and the Hardest Problem in Physics
 14:03: It's possible to extract energy from a rotating black hole by throwing in objects on nearmiss trajectories.


20180725: Reversing Entropy with Maxwell's Demon
 05:41: The demon has the ability to observe speed and trajectories of individual particles in the system.
 07:08: Weirdly, it's not in the measurement of particle trajectories or the motion of the door.


20180516: Noether's Theorem and The Symmetries of Reality
 12:10: ... fitting laws of motion to the stars' fiveyear trajectory, there's only a very narrow trajectory of extremely precise locations ...


20180404: The Unruh Effect
 04:03: ... can never catch up to my friend as long as they stay on that hyperbolic trajectory. ...


20180315: Hawking Radiation
 04:58: He imagined a single spacetime path, a lightspeed trajectory called a null geodesic.
 05:14: In fact, it is the very last trajectory to do so.
 05:37: By the time this trajectory has found its way back out into flat space again, those fluctuations look like real particles.


20180307: Should Space be Privatized?
 03:14: ... Mike Melvill, blasted this rocketpowered plane into a suborbital trajectory, topping 100 kilometers in ...


20180228: The Trebuchet Challenge
 06:19: This time, you release the projectile a little earlier, so it takes a more vertical trajectory.


20171213: The Origin of 'Oumuamua, Our First Interstellar Visitor
 08:53: Its trajectory we'll send it towards the constellation Pegasus, perhaps to find a new star system there to visit.


20171122: Suicide Space Robots
 08:33: Pioneer 10 and 11, Voyager 1 and 2, and New Horizons are all on trajectories that will fling them into interstellar space.


20170719: The Real Star Wars
 00:43: It seemed to many that we were on a trajectory to a spacefaring technological utopia.
 01:51: ... orbit satellites, hitting around 1,200 kilometers at the peak of their trajectories. ...
 02:01: Despite definitely being in space, these are called suborbital trajectories because they don't actually reach orbital velocity.


20170707: Feynman's Infinite Quantum Paths
 04:58: In relativity, it's proportional to the proper time, so the time measured by the clock on a given trajectory.
 10:54: However, unlike the ridiculous infinite trajectories a particle can take, those infinite events don't cancel out nearly so neatly.


20170419: The Oh My God Particle
 04:02: ... analyzing the energies and trajectories of the debris, the collision that produced them and the nature of the ...


20170322: Superluminal Time Travel + Time Warp Challenge Answer
 09:08: If we assume that this trajectory is valid, then there's no limit to how far into the past we can travel.
 10:29: Even our fantasies of time travel are just another pattern emerging from our oneway trajectory through the temporal part of spacetime.


20170308: The Race to a Habitable Exoplanet  Time Warp Challenge
 00:18: In fact any FTL ship set on the right trajectory can find its way back in time to a point before its journey began.
 04:21: ... a spacetime trajectory that allows you to fly the Paradox all the way back to the beginning of ...


20161208: What Happens at the Event Horizon?
 03:32: As it approaches the event horizon, its future light cone bends towards the black hole as fewer and fewer of its possible trajectories lead away.
 03:42: Below the event horizon, all possible trajectories lead towards the singularity.
 04:39: Super handy for understanding monkey trajectories.
 14:50: ... asks how it can be that pilot wave theory predicts different particle trajectories, given that the particles supposedly all start at exactly the same ...
 15:42: This uncertainty leads to the range of potential future trajectories, including trajectories through one slit or the other.
 16:16: Vacuum Diagrams correctly points out that to know the future trajectory of a particle, you only need position, not velocity, as I had stated.


20161130: Pilot Wave Theory and Quantum Realism
 04:45: The wave defines a set of possible trajectories and the particle takes one of those trajectories.
 04:51: ... and velocity at any point, you could figure out its entire future trajectory. ...
 09:30: This can therefore affect the trajectories and properties of particles carried by that wave, potentially very far away.
 11:05: Quantum field theory pretty explicitly requires that all possible particle trajectories be considered equally real.
 11:13: Pilotwave theory postulates that the particle really takes a single actual trajectory, the Bohm trajectory.


20161026: The Many Worlds of the Quantum Multiverse
 01:24: Quantum mechanics very successfully predicts this result by describing each particle's journey as a superposition of all possible trajectories.
 06:20: ... Copenhagen interpretation tells us that the superposition of particle trajectories, of histories, merges into the single timeline of the observer's ...


20160727: The Quantum Experiment that Broke Reality
 07:02: ... have this family of couldbe trajectories from start to finish and for some reason, when the wave reaches the ...


20150729: General Relativity & Curved Spacetime Explained!
 07:50: ... what you find is planetary orbits or spatially straight, radially inward trajectories along which you would see spatial speed increase, or pretty much ...


20150715: Can You Trust Your Eyes in Spacetime?
 07:16: ... time, like what you might see in a physics 101 class, tangent vectors to trajectories represent velocities, how fast you're going and in what ...


20150708: Curvature Demonstrated + Comments
 02:31: Suppose that he breaks up the trajectory from here to here into 1,000 steps and does that process.
 06:10: ... they converge at the North Pole, even though neither person on those trajectories ...
