# Search PBS Space Time

## Results

### 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.

### 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.

### 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.

### 2022-08-03: What Happens Inside a Proton?

• 04:17: ... the probability of a pair of   electrons interacting with the electromagnetic  field - emitting and absorbing a virtual   photon. And there’s ...
• 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  ...

### 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.

### 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.

### 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 ...

### 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 ...

### 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.

### 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.

### 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 ...

### 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 ...

### 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.

### 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 ...

### 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 ...

### 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.

### 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, ...

### 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.

### 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.

### 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.

### 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 ...

### 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 ...

### 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.

### 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.

### 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.
• 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.

### 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.

### 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?

### 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.

### 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 ...

### 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.

### 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 ...

### 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.

### 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.

### 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.

### 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 ...

### 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 ...

### 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.
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