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	2022-12-08: How Are Quasiparticles Different From Particles? 06:25: ... of a sound wave, similar to how a photon is a quantum of light - of an electromagnetic ... 07:56: ... encounter resistance - basically, they have collisions, which can be electromagnetic interactions with other electrons, falling into a hole, ... 09:05: ... becomes zero, which in turn creates many cool interactions with electromagnetic fields, like levitating magnets, which you can use to make super fast ... 10:44: Normally we think of electrons as repelling each other via the electromagnetic force - mediated by photons. 09:05: ... becomes zero, which in turn creates many cool interactions with electromagnetic fields, like levitating magnets, which you can use to make super fast ... 10:44: Normally we think of electrons as repelling each other via the electromagnetic force - mediated by photons. 07:56: ... encounter resistance - basically, they have collisions, which can be electromagnetic interactions with other electrons, falling into a hole, ... 06:25: ... of a sound wave, similar to how a photon is a quantum of light - of an electromagnetic wave. ...
	2022-11-23: How To See Black Holes By Catching Neutrinos 04:28: The result is the electromagnetic analog of a sonic boom.
	2022-11-16: Are there Undiscovered Elements Beyond The Periodic Table? 06:40: ... the one hand we have the electromagnetic force trying to force apart all those positively charged protons, and ...
	2022-10-19: The Equation That Explains (Nearly) Everything! 01:33: ... equation to make that the case. That term turns out to be the electromagnetic ...
	2022-10-12: The REAL Possibility of Mapping Alien Planets! 01:25: ... exact measurement of the   arrival time and phase of the electromagnetic wave  - which gets harder the shorter the wavelength. But there is ...
	2022-09-28: Why Is 1/137 One of the Greatest Unsolved Problems In Physics? 05:55: And that’s exactly what the  fine structure constant is:   it’s the coupling strength of the electromagnetic force. 06:23: So the Fine Structure Constant sets the  "strength" of the electromagnetic force. 06:29: The more chance of interaction between the  electron and electromagnetic fields, the more of an EM disturbance each electron will make. 06:37: So it’s starting to make sense why the fine structure constant appears in all of these formulas that depend on the electromagnetic force. 06:29: The more chance of interaction between the  electron and electromagnetic fields, the more of an EM disturbance each electron will make. 05:55: And that’s exactly what the  fine structure constant is:   it’s the coupling strength of the electromagnetic force. 06:23: So the Fine Structure Constant sets the  "strength" of the electromagnetic force. 06:37: So it’s starting to make sense why the fine structure constant appears in all of these formulas that depend on the electromagnetic force.
	2022-09-14: Could the Higgs Boson Lead Us to Dark Matter? 01:06: They tug and push at each other via the electromagnetic and strong nuclear forces.
	2022-08-24: What Makes The Strong Force Strong? 00:28: ... electrons are held in their orbitals by the electromagnetic force - opposite charges attract, so the negatively-charged electrons ... 06:03: Electrically charged particles interact with each other via the electromagnetic field. 06:53: But this field looks very different to the electromagnetic field around a nucleus. 06:03: Electrically charged particles interact with each other via the electromagnetic field. 06:53: But this field looks very different to the electromagnetic field around a nucleus. 00:28: ... electrons are held in their orbitals by the electromagnetic force - opposite charges attract, so the negatively-charged electrons are ...
	2022-08-03: What Happens Inside a Proton? 05:14: ... the coupling strength between the electron   and electromagnetic field. The smallness  of the fine structure constant means ... 05:31: ... of the gluon field rather than virtual  photons of the electromagnetic field.   We can draw Feynman diagrams of these  ... 05:14: ... the coupling strength between the electron   and electromagnetic field. The smallness  of the fine structure constant means the   ... 05:31: ... of the gluon field rather than virtual  photons of the electromagnetic field.   We can draw Feynman diagrams of these  interactions, now with curly ... 05:14: ... The smallness  of the fine structure constant means the   electromagnetic interaction is relatively  weak. Relative to the strong force ... 04:17: ... the probability of a pair of   electrons interacting with the electromagnetic  field - emitting and absorbing a virtual   photon. And there’s ...
	2022-07-27: How Many States Of Matter Are There? 10:57: Astrophysicists routinely model the galaxies as a sort of fluid of stars, where the interactions are not electromagnetic, but gravitational.
	2022-06-30: Could We Decode Alien Physics? 16:39: ... against interstellar material,   Banoffey asks whether an electromagnetic shield would be sufficient. Well actually a magnetic shield may ...
	2022-04-27: How the Higgs Mechanism Give Things Mass 02:50: ... this field are the photon - our first gauge  boson and carrier of electromagnetic ... 12:59: ... try to bring all of this together.  We want to combine the weak and electromagnetic   interactions, so we need simultaneous local  U(1) and SU(2) ...
	2022-03-16: What If Charge is NOT Fundamental? 12:43: That event - the breaking of electroweak symmetry  - created the weak and electromagnetic forces as we know them today.
	2022-02-23: Are Cosmic Strings Cracks in the Universe? 00:58: ... as separate  force fields. This gives us our familiar   electromagnetic, strong and weak nuclear forces. But at very high ...
	2022-01-27: How Does Gravity Escape A Black Hole? 02:08: ... neutron stars reach us at about the same time the corresponding electromagnetic radiation from the ... 06:16: ... example the electromagnetic force is communicated between charged particles by transferring virtual ... 07:21: ... sort of emerge from the electromagnetic field in the broader region occupied by both of the electrons, and their ... 10:37: If a black hole swallows electric charge, the electromagnetic field around the black hole grows. 06:16: ... particles by transferring virtual photons - ephemeral excitations in the electromagnetic field. ... 07:21: ... sort of emerge from the electromagnetic field in the broader region occupied by both of the electrons, and their ... 10:37: If a black hole swallows electric charge, the electromagnetic field around the black hole grows. 06:16: ... example the electromagnetic force is communicated between charged particles by transferring virtual ... 02:08: ... neutron stars reach us at about the same time the corresponding electromagnetic radiation from the ...
	2022-01-12: How To Simulate The Universe With DFT 01:48: ... by a sum of potential energies - that’s the V. V could result from the electromagnetic field inside the hydrogen atom, or the EM fields defining the walls of a ...
	2021-12-10: 2021 End of Year AMA! 00:02: ... a sense the let's say the proton is causing a vibration in the entire electromagnetic field through all space and so what that means is that the proton can ...
	2021-10-05: Why Magnetic Monopoles SHOULD Exist 09:00: We talked about that before - about how the breaking of the symmetry of the Higgs field separated the weak and electromagnetic forces.
	2021-08-18: How Vacuum Decay Would Destroy The Universe 02:52: ... energy is where the field value is zero.   For example, for an electromagnetic wave  - a photon - the electric and magnetic   fields ...
	2021-08-10: How to Communicate Across the Quantum Multiverse 16:27: ... - it dissipates into space with the matter, potentially leading to electromagnetic radiation. And that is exactly it. The supernova shock front is a ...
	2021-08-03: How An Extreme New Star Could Change All Cosmology 15:19: ... whether the force that stops him when he runs into a wall is ultimately electromagnetic. Actually it’s not only that. Electromagnetism is responsible for the ...
	2021-06-16: Can Space Be Infinitely Divided? 03:14: ... clock the instant of the return to within one wave-cycle of the electromagnetic wave.   That gives a distance uncertainty of around one ...
	2021-06-09: Are We Running Out of Space Above Earth? 12:59: ... sails which increase drag and cause trash to fall faster, or even electromagnetic tethers which push on earth’s magnetic field to deorbit a ...
	2021-05-25: What If (Tiny) Black Holes Are Everywhere? 03:08: ... such black holes the Hawking radiation is just photons - electromagnetic waves with kilometers-long wavelengths, so really, really low energy ...
	2021-05-19: Breaking The Heisenberg Uncertainty Principle 05:36: ... sent along those paths and then later recombined in such a way that the electromagnetic waves of these laser beams destructively ...
	2021-05-11: How To Know If It's Aliens 16:32: ... singularities - wormholes between adjacent dimensions threaded by electromagnetic fields. Turns out particles aren’t that, but it’s how the wormhole ...
	2021-04-07: Why the Muon g-2 Results Are So Exciting! 01:56: ... Model that describes how particles with electric charge interact via the electromagnetic force, quantum ... 04:33: In this theory, electromagnetic interactions result from charge particles communicating by exchanging virtual photons. 07:36: So you add up all of the Feynman diagram to all possible electromagnetic interactions of the muon, but you don't stop there. 01:56: ... Model that describes how particles with electric charge interact via the electromagnetic force, quantum ... 04:33: In this theory, electromagnetic interactions result from charge particles communicating by exchanging virtual photons. 07:36: So you add up all of the Feynman diagram to all possible electromagnetic interactions of the muon, but you don't stop there. 04:33: In this theory, electromagnetic interactions result from charge particles communicating by exchanging virtual photons.
	2021-03-23: Zeno's Paradox & The Quantum Zeno Effect 05:55: To recap - we have a collection of laser-cooled atoms in an electromagnetic trap.
	2021-02-17: Gravitational Wave Background Discovered? 00:00: ... space to process when the jets sweep past the earth we see flashes of electromagnetic radiation and we call those flashing sources pulsars some flash every ...
	2021-01-26: Is Dark Matter Made of Particles? 02:05: Any electrically charged particle experiences the electromagnetic force and can communicate with other charged particles by exchanging photons. 11:12: ... and antielectrons, or positrons, interact very strongly via the electromagnetic force - which means they find each other too ... 02:05: Any electrically charged particle experiences the electromagnetic force and can communicate with other charged particles by exchanging photons. 11:12: ... and antielectrons, or positrons, interact very strongly via the electromagnetic force - which means they find each other too ...
	2021-01-12: What Happens During a Quantum Jump? 08:48: The 3 different energy levels of this artificial atom corresponded to the number of electromagnetic quanta of energy stored in the circuits.
	2020-11-04: Electroweak Theory and the Origin of the Fundamental Forces 00:41: Today we're going to begin an exploration of how the electromagnetic and weak forces were once a single thing. 03:20: This was an early hint that somehow the electromagnetic force, which acts on charged particles, was playing a role here. 05:32: That stuff turns out to describe the electromagnetic field. 07:22: It had 1 degree of freedom - corresponding to a gauge field with a single mode - the electromagnetic field and its photon. 08:50: ... example, adding mass to a photon means adding an extra term to the electromagnetic field stuff in the Schrodinger equation so that it would no longer be ... 05:32: That stuff turns out to describe the electromagnetic field. 07:22: It had 1 degree of freedom - corresponding to a gauge field with a single mode - the electromagnetic field and its photon. 08:50: ... example, adding mass to a photon means adding an extra term to the electromagnetic field stuff in the Schrodinger equation so that it would no longer be ... 03:20: This was an early hint that somehow the electromagnetic force, which acts on charged particles, was playing a role here.
	2020-09-21: Could Life Evolve Inside Stars? 09:18: Energy could be spread more evenly across the electromagnetic spectrum, which would look like cooling - the star might appear cooler than it should.
	2020-09-08: The Truth About Beauty in Physics 09:30: And Maxwell’s equations, which parsimoniously unite electricity and magnetism but also predict the existence of electromagnetic waves - of light. 11:38: The result was the same - the electromagnetic field popped out like magic. 09:30: And Maxwell’s equations, which parsimoniously unite electricity and magnetism but also predict the existence of electromagnetic waves - of light.
	2020-08-10: Theory of Everything Controversies: Livestream 00:00: ... in large measure we've had unifications maxwell's unification of all electromagnetic phenomena is probably the greatest one what's happened in the last 50 ...
	2020-07-20: The Boundary Between Black Holes & Neutron Stars 02:18: ... arm lengths, which in turn causes the peaks and valleys of the laser’s electromagnetic wave to line up differently, and so those changes can be ... 03:34: ... that case it corresponded to an explosion observed across the electromagnetic spectrum - energy released as the neutron stars tore themselves apart in ... 04:01: No electromagnetic counterpart was found. 03:34: ... that case it corresponded to an explosion observed across the electromagnetic spectrum - energy released as the neutron stars tore themselves apart in their ... 02:18: ... arm lengths, which in turn causes the peaks and valleys of the laser’s electromagnetic wave to line up differently, and so those changes can be ...
	2020-05-18: Mapping the Multiverse 13:13: ... electrically charged, or Reissner-Nordström black holes the electromagnetic field within causes massive tension, or negative pressure that produces ...
	2020-05-11: How Luminiferous Aether Led to Relativity 05:53: ... to that the fact that in the 1860s, Maxwell’s equations predicted that electromagnetic waves should travel at exactly the speed of … wait for it, light. It was ...
	2020-04-22: Will Wormholes Allow Fast Interstellar Travel? 01:09: ... around and interact with each other. And if you thread the funnels with electromagnetic field lines then they act like charged ...
	2020-02-11: Are Axions Dark Matter? 07:53: ... though axions have no electric charge, they can still interact with the electromagnetic field and produce photons via the strong ... 08:58: ... constantly bouncing off electrons and protons in the presence of strong electromagnetic fields. Perfect conditions for producing axions, among other things. So ... 07:53: ... though axions have no electric charge, they can still interact with the electromagnetic field and produce photons via the strong ... 08:58: ... constantly bouncing off electrons and protons in the presence of strong electromagnetic fields. Perfect conditions for producing axions, among other things. So the ...
	2020-01-27: Hacking the Nature of Reality 02:55: ... of quantum electrodynamics, which describes the interactions of the electromagnetic ...
	2020-01-13: How To Capture Black Holes 08:50: ... merge in empty space then the event should invisible - it should emit no electromagnetic radiation. But it’s different in an accretion disk. A few things happen ... 10:40: ... detected, multiple telescopes scan that region of the sky to search for electromagnetic signatures. If the merger was inside an accretion disk then we might see ... 08:50: ... merge in empty space then the event should invisible - it should emit no electromagnetic radiation. But it’s different in an accretion disk. A few things happen right after ... 10:40: ... detected, multiple telescopes scan that region of the sky to search for electromagnetic signatures. If the merger was inside an accretion disk then we might see a temporary ...
	2020-01-06: How To Detect a Neutrino 05:05: ... are massive, ♪ ♪ unlike the massless photon or gluon, which carry the electromagnetic and strong nuclear ...
	2019-10-07: Black Hole Harmonics 11:09: The last was the incredible binary neutron star merger that was also detected across the electromagnetic spectrum as a giant explosion.
	2019-08-19: What Happened Before the Big Bang? 02:24: Other fields like the particle field or the electromagnetic field are described by multiple components and vectors instead of single numbers. 05:59: Those are theories that combine the strong nuclear force with electromagnetic and weak forces. 02:24: Other fields like the particle field or the electromagnetic field are described by multiple components and vectors instead of single numbers.
	2019-06-20: The Quasar from The Beginning of Time 07:27: ... there are other ways humanity can see the universe beyond the electromagnetic spectrum that we observe with traditional ...
	2019-06-17: How Black Holes Kill Galaxies 13:47: Even if strange matter is stable as so called "Strangelets" These are electrically neutral, so they don't have an electromagnetic signature.
	2019-06-06: The Alchemy of Neutron Star Collisions 02:47: ... stars many of the world's great telescopes monitored the subsequent electromagnetic flash as the ejected material from this collision expanded and faded the ...
	2019-05-09: Why Quantum Computing Requires Quantum Cryptography 04:52: Another example is the polarization of a photon, a quantum of electromagnetic wave.
	2019-03-20: Is Dark Energy Getting Stronger? 02:40: ... matter is a particle of some unknown type, cold, diffuse, and immune to electromagnetic interactions of any ...
	2019-02-07: Sound Waves from the Beginning of Time 02:22: The electrons in turn exerted their electromagnetic pool on the nuclei.
	2018-11-21: 'Oumuamua Is Not Aliens 14:35: ... passing through matter, interactions with the electromagnetic field change the effect of mass of the neutrino by a process analogous ...
	2018-11-14: Supersymmetric Particle Found? 02:49: That's the energy at which the electromagnetic and weak nuclear forces merge into the same force.
	2018-11-07: Why String Theory is Right 08:47: That term looks like what you would get if you added the electromagnetic field to the Schrodinger equation. 11:07: ... as local phase invariance required us to add the electromagnetic field to the Schrodinger equation, adding Weyl invariance means we need ... 08:47: That term looks like what you would get if you added the electromagnetic field to the Schrodinger equation. 11:07: ... as local phase invariance required us to add the electromagnetic field to the Schrodinger equation, adding Weyl invariance means we need to add ...
	2018-10-31: Are Virtual Particles A New Layer of Reality? 02:18: For example, two electrons-- excitations in the electron field-- will repel each other by exchanging energy through the electromagnetic field. 02:30: ... electron jiggles the electromagnetic field, and those jiggles have a back reaction that jiggles each ... 02:18: For example, two electrons-- excitations in the electron field-- will repel each other by exchanging energy through the electromagnetic field. 02:30: ... electron jiggles the electromagnetic field, and those jiggles have a back reaction that jiggles each electron, which ...
	2018-10-10: Computing a Universe Simulation 13:46: But you don't see the electromagnetic explosion until the merger.
	2018-10-03: How to Detect Extra Dimensions 01:42: ... was followed by a glow across the electromagnetic spectrum and, ultimately, with the discovery of the distant galaxy in ... 04:44: ... the electromagnetic strong and weak forces are all in the same ballpark in terms of ... 05:02: And it doesn't cancel out, like the electromagnetic force. 09:58: ... electromagnetic signal from these merging exploding neutron stars allowed us to measure ... 11:06: ... the way, comparison of the electromagnetic and gravitational wave arrival times also allowed us to verify that ... 13:32: But it may not be the same sort of changes you get when you quantize, say, the electromagnetic field. 05:02: And it doesn't cancel out, like the electromagnetic force. 09:58: ... electromagnetic signal from these merging exploding neutron stars allowed us to measure its ... 01:42: ... was followed by a glow across the electromagnetic spectrum and, ultimately, with the discovery of the distant galaxy in which the ... 04:44: ... the electromagnetic strong and weak forces are all in the same ballpark in terms of strength, ...
	2018-09-20: Quantum Gravity and the Hardest Problem in Physics 08:10: For example, classical electromagnetism becomes quantum electrodynamics when you quantize the electron field and the electromagnetic field. 09:33: ... self-interaction due to its electric charge messing with the surrounding electromagnetic ... 09:48: ... a scheme to calculate a complex interaction, like the buzzing electromagnetic field around an electron, with a series of corrections to a simple, ... 08:10: For example, classical electromagnetism becomes quantum electrodynamics when you quantize the electron field and the electromagnetic field. 09:33: ... self-interaction due to its electric charge messing with the surrounding electromagnetic field. ... 09:48: ... a scheme to calculate a complex interaction, like the buzzing electromagnetic field around an electron, with a series of corrections to a simple, ...
	2018-08-15: Quantum Theory's Most Incredible Prediction 01:07: QED talks about the electromagnetic field whose excitations give us the photon. 01:13: ... describe how this field interacts with charged particles to give us the electromagnetic force, which binds electrons to atoms, atoms to molecules, and ... 03:32: As we'll see, their nature is predicted by quantum theory, measure electromagnetic moments, and you verify your quantum picture of reality. 03:41: ... Electromagnetic fields seem intuitive if you think of them as tiny balls of rotating ... 06:09: ... equation tells us how a relativistic electron would interact with an electromagnetic field, it still treats this EM field ... 06:29: And QED tells us that the quantum electromagnetic field is a messy, messy place. 06:35: It seethes with a faint quantum buzz, infinite phantom oscillations that add infinite complication to any electromagnetic interaction. 07:06: It's really incredible that we can even begin to calculate the effect of the messy buzzing electromagnetic field. 11:32: This is the fundamental constant governing the strength of the electromagnetic interaction of charged particles. 01:07: QED talks about the electromagnetic field whose excitations give us the photon. 06:09: ... equation tells us how a relativistic electron would interact with an electromagnetic field, it still treats this EM field ... 06:29: And QED tells us that the quantum electromagnetic field is a messy, messy place. 07:06: It's really incredible that we can even begin to calculate the effect of the messy buzzing electromagnetic field. 03:41: ... Electromagnetic fields seem intuitive if you think of them as tiny balls of rotating electric ... 01:13: ... describe how this field interacts with charged particles to give us the electromagnetic force, which binds electrons to atoms, atoms to molecules, and therefore, you ... 06:35: It seethes with a faint quantum buzz, infinite phantom oscillations that add infinite complication to any electromagnetic interaction. 11:32: This is the fundamental constant governing the strength of the electromagnetic interaction of charged particles. 03:32: As we'll see, their nature is predicted by quantum theory, measure electromagnetic moments, and you verify your quantum picture of reality.
	2018-08-01: How Close To The Sun Can Humanity Get? 03:51: It'll directly probe the sun's electromagnetic field and will connect the sun's magnetic activity with the sources of the solar wind.
	2018-07-11: Quantum Invariance & The Origin of The Standard Model 00:59: Today, I'm going to open the first portal of the standard model and show you the origin of the electromagnetic field. 07:27: It looks exactly like the type of vector potential that you would have in the presence of an electromagnetic field. 07:45: And it turns out that field already exists, and it's the electromagnetic field. 08:24: Any particle that has this kind of charge will interact with and be affected by the electromagnetic field and be granted local phase invariance. 09:23: Those oscillations in our new electromagnetic field turn out to be the photon. 00:59: Today, I'm going to open the first portal of the standard model and show you the origin of the electromagnetic field. 07:27: It looks exactly like the type of vector potential that you would have in the presence of an electromagnetic field. 07:45: And it turns out that field already exists, and it's the electromagnetic field. 08:24: Any particle that has this kind of charge will interact with and be affected by the electromagnetic field and be granted local phase invariance. 09:23: Those oscillations in our new electromagnetic field turn out to be the photon.
	2018-07-04: Will A New Neutrino Change The Standard Model? 00:36: They don't interact by the electromagnetic or strong nuclear forces, only by the weak nuclear force and gravity.
	2018-06-20: The Black Hole Information Paradox 13:41: ... the outside of a black hole can feel its electric charge given that the electromagnetic field is communicated by photons and photons can't escape the black ... 13:53: ... we talked about a black hole's electric charge in terms of the classical electromagnetic field which has an existence independent of electric ... 14:01: But quantum-field theory imagines the electromagnetic force as being transmitted by virtual photons. 14:44: The electromagnetic field outside the black hole knows about the charge inside the black hole. 13:41: ... the outside of a black hole can feel its electric charge given that the electromagnetic field is communicated by photons and photons can't escape the black ... 13:53: ... we talked about a black hole's electric charge in terms of the classical electromagnetic field which has an existence independent of electric ... 14:44: The electromagnetic field outside the black hole knows about the charge inside the black hole. 14:01: But quantum-field theory imagines the electromagnetic force as being transmitted by virtual photons.
	2018-06-13: What Survives Inside A Black Hole? 02:58: After all, the forces involved, namely the gravitational and electromagnetic forces, are only communicated at the speed of light. 07:34: ... so the gravitational and electromagnetic forces have infinite range, and so Gauss's law demands that the mass and ... 02:58: After all, the forces involved, namely the gravitational and electromagnetic forces, are only communicated at the speed of light. 07:34: ... so the gravitational and electromagnetic forces have infinite range, and so Gauss's law demands that the mass and charge ...
	2018-05-09: How Gaia Changed Astronomy Forever 02:28: It measures brightness in both the red and blue parts of the electromagnetic spectrum.
	2018-04-18: Using Stars to See Gravitational Waves 02:51: But then also across the electromagnetic spectrum.
	2018-01-10: What Do Stars Sound Like? 12:26: Felix Schneider asks how electromagnetic radiation can be focused by a magnetic field.
	2017-12-22: Space Time VR 00:16: ... counter-intuitive ideas in astrophysics in which we explore the electromagnetic spectrum, the speed of light, and time ...
	2017-12-06: Understanding the Uncertainty Principle with Quantum Fourier Series 06:49: In the early days of quantum mechanics, it was realized that photons are electromagnetic wave packets whose momentum is given by their frequency.
	2017-11-08: Zero-Point Energy Demystified 00:43: ... the electromagnetic field alone, this energy density has been estimated to be up to a ... 08:35: ... saw last week, the theoretical density of the vacuum energy due to the electromagnetic field is estimated by integrating the energy in all possible frequency ... 00:43: ... the electromagnetic field alone, this energy density has been estimated to be up to a crazily high ... 08:35: ... saw last week, the theoretical density of the vacuum energy due to the electromagnetic field is estimated by integrating the energy in all possible frequency modes ...
	2017-11-02: The Vacuum Catastrophe 02:51: Let's think in terms of the electromagnetic field. 09:48: And at the same time, neutrinos don't interact electromagnetically, so they're, in that sense, dark.
	2017-10-25: The Missing Mass Mystery 02:43: Baryonic matter interacts with light, so we can search for it by scanning the electromagnetic spectrum.
	2017-10-19: The Nature of Nothing 00:30: There's also the ambient electromagnetic buzz from the surrounding city and a stream of exotic particles from the surrounding cosmos. 04:33: For example, QFT describes the electromagnetic force as the exchange of virtual photons between charged particles. 05:55: And so virtual photons can exist for any amount of time, long enough to carry the electromagnetic force to any distance. 00:30: There's also the ambient electromagnetic buzz from the surrounding city and a stream of exotic particles from the surrounding cosmos. 04:33: For example, QFT describes the electromagnetic force as the exchange of virtual photons between charged particles. 05:55: And so virtual photons can exist for any amount of time, long enough to carry the electromagnetic force to any distance.
	2017-09-28: Are the Fundamental Constants Changing? 03:37: It's a dimensionless description of the strength of the electromagnetic force. 03:42: In the language of quantum field theory, it's the coupling strength between the electromagnetic field and a charged field like the electron field. 03:37: It's a dimensionless description of the strength of the electromagnetic force.
	2017-09-13: Neutron Stars Collide in New LIGO Signal? 10:06: But colliding neutron stars are bright across the electromagnetic spectrum.
	2017-07-26: The Secrets of Feynman Diagrams 02:02: The first and most predictively powerful quantum field theory, QED, talks about the interaction of the electron field with the electromagnetic field. 02:50: For this to be interesting, the electric and electromagnetic fields need to interact. 04:24: That's all the ways that the electromagnetic and electron fields can interact. 02:02: The first and most predictively powerful quantum field theory, QED, talks about the interaction of the electron field with the electromagnetic field. 02:50: For this to be interesting, the electric and electromagnetic fields need to interact. 10:34: When an electron and a positron interact electromagnetically, we call it Bhabha scattering.
	2017-07-19: The Real Star Wars 04:56: Then, by passing electromagnetic radiation at a wavelength tuned to an energy level transition in that substance, stimulated emission can occur. 15:56: ... with other fields, be it the Higgs field for the bare mass, or the electromagnetic field for the self energy correction to that ... 16:51: Every one of those vertices represents an interaction between the electron and the electromagnetic fields. 15:56: ... with other fields, be it the Higgs field for the bare mass, or the electromagnetic field for the self energy correction to that ... 16:51: Every one of those vertices represents an interaction between the electron and the electromagnetic fields. 04:56: Then, by passing electromagnetic radiation at a wavelength tuned to an energy level transition in that substance, stimulated emission can occur.
	2017-07-12: Solving the Impossible in Quantum Field Theory 01:38: In old-fashioned classical electrodynamics, we think of each electron as producing an electromagnetic field. 02:06: We think of the electromagnetic field as existing everywhere in space, whether or not there's an electron present. 01:38: In old-fashioned classical electrodynamics, we think of each electron as producing an electromagnetic field. 02:06: We think of the electromagnetic field as existing everywhere in space, whether or not there's an electron present.
	2017-07-07: Feynman's Infinite Quantum Paths 09:54: So a photon is an excitation of vibration in the electromagnetic field. 10:10: ... includes the probability amplitude of a photon's energy moving from the electromagnetic field into, say, the electron field, where it might become an ... 13:04: Jakub asks, what is the difference between the electromagnetic field of quantum field theory and the aether? 09:54: So a photon is an excitation of vibration in the electromagnetic field. 10:10: ... includes the probability amplitude of a photon's energy moving from the electromagnetic field into, say, the electron field, where it might become an ... 13:04: Jakub asks, what is the difference between the electromagnetic field of quantum field theory and the aether?
	2017-06-28: The First Quantum Field Theory 01:30: Quantum ElectroDynamics, QED, provides this description for one such field, the ElectroMagnetic field. 04:16: Light is a wave in the electromagnetic field. 04:19: The electromagnetic field is similar to the density field in a room full of air. 04:36: The electromagnetic field is a quantum field and so these oscillations have a minimum amplitude. 07:12: Instead of quantizing particles' physical properties like position and momentum, as did Schrodinger, Dirac quantized the electromagnetic field itself. 08:13: Dirac wasn't the first to come up with this idea but he was the first to successfully apply it to describing electromagnetic interactions. 10:48: Remember, this approach began with thinking of photons as oscillations in the electromagnetic field. 01:30: Quantum ElectroDynamics, QED, provides this description for one such field, the ElectroMagnetic field. 04:16: Light is a wave in the electromagnetic field. 04:19: The electromagnetic field is similar to the density field in a room full of air. 04:36: The electromagnetic field is a quantum field and so these oscillations have a minimum amplitude. 07:12: Instead of quantizing particles' physical properties like position and momentum, as did Schrodinger, Dirac quantized the electromagnetic field itself. 10:48: Remember, this approach began with thinking of photons as oscillations in the electromagnetic field. 08:13: Dirac wasn't the first to come up with this idea but he was the first to successfully apply it to describing electromagnetic interactions.
	2017-06-21: Anti-Matter and Quantum Relativity 04:31: So for fast moving electrons and for electrons in electromagnetic fields, the Schrodinger equation gives the wrong answers. 06:02: The Dirac equation perfectly predicts the motion of electrons at any speed, even in an electromagnetic field. 06:38: ... example, a lone electron moving in an electromagnetic field could keep releasing energy as light infinitely, and sink lower ... 06:02: The Dirac equation perfectly predicts the motion of electrons at any speed, even in an electromagnetic field. 06:38: ... example, a lone electron moving in an electromagnetic field could keep releasing energy as light infinitely, and sink lower and ... 04:31: So for fast moving electrons and for electrons in electromagnetic fields, the Schrodinger equation gives the wrong answers.
	2017-04-05: Telescopes on the Moon 01:25: Two, Earth's atmosphere blocks all but a few narrow windows of the electromagnetic spectrum.
	2017-03-29: How Time Becomes Space Inside a Black Hole 12:28: Colin Brown asks if the spin flip oscillation is only dependent on the electromagnetic field oscillation. 12:36: Firstly yeah, these time crystals oscillate at an integer multiple of the electromagnetic field frequency. 12:28: Colin Brown asks if the spin flip oscillation is only dependent on the electromagnetic field oscillation. 12:36: Firstly yeah, these time crystals oscillate at an integer multiple of the electromagnetic field frequency. 12:28: Colin Brown asks if the spin flip oscillation is only dependent on the electromagnetic field oscillation.
	2017-03-15: Time Crystals! 04:36: A laser is just a very well-ordered electromagnetic wave with a known period or frequency.
	2017-01-11: The EM Drive: Fact or Fantasy? 12:12: It's certainly possible that we're missing some amazing physical phenomenon that will make electromagnetic communication redundant.
	2016-11-16: Strange Stars 06:45: The electromagnetic force and the weak nuclear force were unified as the electroweak force.
	2016-07-27: The Quantum Experiment that Broke Reality 02:01: Of course, we now know that light is a wave in the electromagnetic field thanks to the work of James Clerk Maxwell a century later. 02:13: ... wait, we also know that light comes in indivisible little bundles of electromagnetic energy called "photons." Einstein demonstrated this through the ... 02:33: So each photon is a little bundle of waves, waves of electromagnetic field, and each bundle can't be broken into smaller parts. 09:54: ... we know that light is a wave in the electromagnetic field and quantum field theory tells us that all fundamental particles ... 02:13: ... wait, we also know that light comes in indivisible little bundles of electromagnetic energy called "photons." Einstein demonstrated this through the photoelectric ... 02:01: Of course, we now know that light is a wave in the electromagnetic field thanks to the work of James Clerk Maxwell a century later. 02:33: So each photon is a little bundle of waves, waves of electromagnetic field, and each bundle can't be broken into smaller parts. 09:54: ... we know that light is a wave in the electromagnetic field and quantum field theory tells us that all fundamental particles are ...
	2016-07-06: Juno to Reveal Jupiter's Violent Past 11:05: The sun does emit a bit more light in the yellowy green part of the electromagnetic spectrum compared to the blue and the red parts on either side.
	2016-06-22: Planck's Constant and The Origin of Quantum Mechanics 03:14: Accelerated charges produce electromagnetic radiation-- light. 03:42: The sun is yellow because its 6000 Kelvin surface produces more photons in the green yellow part of the electromagnetic spectrum than anywhere else. 03:14: Accelerated charges produce electromagnetic radiation-- light. 03:42: The sun is yellow because its 6000 Kelvin surface produces more photons in the green yellow part of the electromagnetic spectrum than anywhere else.
	2016-04-27: What Does Dark Energy Really Do? 01:33: During that expansion, it increases the wavelength of these electromagnetic waves, resulting in what we see as redshift, cosmological redshift.
	2016-03-30: Pulsar Starquakes Make Fast Radio Bursts? + Challenge Winners! 03:33: ... small, photons don't have to get too close before they interact via the electromagnetic ...
	2016-03-02: What’s Wrong With the Big Bang Theory? 01:52: ... force, they become just like the photon, which itself carries the electromagnetic ... 02:05: This means that the weak and electromagnetic forces sort of merge into the one electroweak force. 01:52: ... force, they become just like the photon, which itself carries the electromagnetic force. ... 02:05: This means that the weak and electromagnetic forces sort of merge into the one electroweak force.
	2016-02-11: LIGO's First Detection of Gravitational Waves! 05:55: ... of these mergers simultaneously using multiple telescopes that span the electromagnetic spectrum from radio to visible to ...
	2016-01-06: The True Nature of Matter and Mass 04:36: Photons in the photon box, but even in the spring, the density wave is ultimately communicated by electromagnetic interactions between the atoms. 10:06: Then, without an infinite source and sink of weak hypercharge, the weak nuclear force and the electromagnetic force were all the same force. 10:25: Then the weak force carriers gained mass and became differentiated from the electromagnetic carrier-- the photon. 10:06: Then, without an infinite source and sink of weak hypercharge, the weak nuclear force and the electromagnetic force were all the same force. 04:36: Photons in the photon box, but even in the spring, the density wave is ultimately communicated by electromagnetic interactions between the atoms.
	2015-12-16: The Higgs Mechanism Explained 04:26: ... like regular electric charge, which lets all electrons feel the electromagnetic force, except in this case, it lets only left-handed electrons feel the ...
	2015-10-22: Have Gravitational Waves Been Discovered?!? 02:49: ... ripples on a pond or even electromagnetic waves-- which are all simple, up-down, longitudinal waves-- ... 05:21: ... length of those paths just right, we can make the peaks of one of those electromagnetic waves line up with the valleys of the other, causing them to completely ... 02:49: ... ripples on a pond or even electromagnetic waves-- which are all simple, up-down, longitudinal waves-- gravitational waves ... 05:21: ... length of those paths just right, we can make the peaks of one of those electromagnetic waves line up with the valleys of the other, causing them to completely cancel ...
	2015-10-07: The Speed of Light is NOT About Light 02:00: ... weaves these laws into his eponymous equations, describing the entire electromagnetic phenomenon with such ... 03:49: The two work together to give you the same electromagnetic, the Lorentz, force, regardless of reference frame. 03:56: This tells us that the electromagnetic force holds clues to the fundamental interplay between space, time, and velocity. 08:29: ... cosmic speed limit also happens to define the speed of propagation of electromagnetic waves-- the speed of ... 03:56: This tells us that the electromagnetic force holds clues to the fundamental interplay between space, time, and velocity. 02:00: ... weaves these laws into his eponymous equations, describing the entire electromagnetic phenomenon with such ... 08:29: ... cosmic speed limit also happens to define the speed of propagation of electromagnetic waves-- the speed of ...
	2015-09-30: What Happens At The Edge Of The Universe? 08:47: This is really hard unless you can interact electromagnetically.
	2015-03-25: Cosmic Microwave Background Explained 01:46: It's emitting electromagnetic waves of all wavelengths. 02:04: Now, everything has a temperature, so everything has a thermal spectrum, and it emits all electromagnetic wavelengths. 03:16: And just like toasters, people and tacos, it was emitting a thermal distribution of electromagnetic waves. 02:04: Now, everything has a temperature, so everything has a thermal spectrum, and it emits all electromagnetic wavelengths. 01:46: It's emitting electromagnetic waves of all wavelengths. 03:16: And just like toasters, people and tacos, it was emitting a thermal distribution of electromagnetic waves.

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