- Видео 24
- Просмотров 643 404
Atoms and Sporks
Австрия
Добавлен 3 окт 2018
The Weird, Weird Quantum Physics of Solar Panels (And Everything Else)
In this video we talk about the weird quantum physics of photovoltaics including band theory, the Fermi sea, carrier lifetimes and recombination (and school buses!)
Other recommended videos about quantum physics and technology:
How Quantum Physics Built the Digital Age:
ruclips.net/video/KunEYnIaGGc/видео.html
The Quantum Limit of Computing:
ruclips.net/video/67S4IyakRko/видео.html
Quantum Tunneling and Technology:
ruclips.net/video/XnNC6uHkKMY/видео.html
Technical Caveat: It is common practice when drawing energy band diagrams between two different materials to draw them such that the electron filling level (i.e. Fermi level) is constant from material to material. However, here we take the appro...
Other recommended videos about quantum physics and technology:
How Quantum Physics Built the Digital Age:
ruclips.net/video/KunEYnIaGGc/видео.html
The Quantum Limit of Computing:
ruclips.net/video/67S4IyakRko/видео.html
Quantum Tunneling and Technology:
ruclips.net/video/XnNC6uHkKMY/видео.html
Technical Caveat: It is common practice when drawing energy band diagrams between two different materials to draw them such that the electron filling level (i.e. Fermi level) is constant from material to material. However, here we take the appro...
Просмотров: 13 182
Видео
Longer Days Are NOT The Reason For The Summer Heat
Просмотров 1,7 тыс.3 года назад
Today we have a short little video where we look at what really causes summer to be "summer" and what effects most contribute to the seasonal variations in temperature
Where Does Light Go When You Turn Off The Lights In A Room? Could We Make A Forever-Bright Room?
Просмотров 8 тыс.3 года назад
I hope you enjoy this short video on a simple physics question... with some surprisingly interesting implications.
Our Future Depends On Invisible "Metals"
Просмотров 8 тыс.3 года назад
In this video we'll talk about transparent conductive oxides (TCO), indium tin oxide (ITO), transparent polymers, graphene and carbon nanotube (CNT) networks and the important role they play both in our current technology and in our hope for a renewable energy future.
Real Physics in LESS Than Three Dimensions (Flatlands in Silicon)
Просмотров 2,4 тыс.3 года назад
In this video we discussed the quantum physics of carrier confinement in everyday technologies as well as a bit about the motivations behind heady hyperdimensional physical theories like string theory. Discussion about the 5D Density of States graph: This graph is actually a bit of a cheat, because actually one can show that it’s not possible to have matter *at all* in a universe with 5 infinit...
Holiday Physics: Why Do We STILL Not Understand Ice Skating? (And How Does... Ketchup Come In?)
Просмотров 1,5 тыс.3 года назад
Rheology, Thixotropic Fluids and Ketchup! The perfect recipe for a holiday special!... Right? Further Discussion of Apparatus: The device used in the PRX paper was called a “stroke-probe” and it was literally basically a fancy tuning fork with a glass bead glued to it and this glass bead would be touched ever so gently to the surface of ice and thus play the role of our skate top layer. And thi...
3 Things Hollywood Doesn't Understand About Basic Physics
Просмотров 2,3 тыс.3 года назад
In this video we have a bit of fun and talk about some Physics Phails of our favourite Hollywood movies and TV shows.
What Are Quasiparticles?: The Real “Fake” Particles of the Universe
Просмотров 13 тыс.4 года назад
You've probably heard of the Fundamental Particles of the Standard Model, but have you ever heard of the literally hundreds or particles that don't get the same attention? Let's talk about QUASI-PARTICLES A couple more links about quasiparticles with “beyond the Standard Model” properties: Magnetic Monopoles: www.sciencemag.org/news/2009/09/physicists-create-magnetic-monopoles-sort Majorana Fer...
Tours Through Physics: Nanoplasmonics (Part 3)
Просмотров 13 тыс.4 года назад
Finally, finally, FINALLY we conclude our tour through the field of Nanoplasmonics. In this final video we discuss the physics that drives the useful effects that underpin this field.
Quantum Tunneling and Technology: From Flash Memory to Satellite TV and Appliances
Просмотров 14 тыс.4 года назад
In this video we talk about what "oh so mysterious" quantum tunneling actually is and how it is used in technologies such as flash memory and zener and tunneling diodes. For more information about flash memory and quantum tunneling specifically see this blog post: atomsandsporks.com/2020/04/19/quantum-tunneling-and-flash-memory/ Technical Caveat #1: As I am providing a conceputal overview I hin...
What Are Electrons REALLY Doing In A Wire? Quantum Physics and High School Myths
Просмотров 181 тыс.4 года назад
In this video we explore the surprisingly complex and quantum mechanical physics of an everyday situation: electrical current flowing in a metal wire
What is Liquid Crystal Physics? Smart Materials, Lasers, Kevlar, LCDs and More!
Просмотров 3,4 тыс.5 лет назад
Here we take another Tour Through Physics and introduce a field of physics that doesn't maybe get the exposure it deserves. This time: Liquid-Crystal Physics For an excellent, more detailed video on LCDs specifically see The Engineering Guy: ruclips.net/video/jiejNAUwcQ8/видео.html Note on laser pumping: Semiconductor lasers, like those in your CD/DVD/Blu-ray player are electrically pumped mean...
How Quantum Physics Built The Modern Age
Просмотров 8 тыс.5 лет назад
The "Quantum Age" isn't coming, it's been here all along. From your Smartphone to your Game Console, quantum physics is at the heart of all of it Sources for experimental images: Those two images are a so-called "band structure diagram" of MoS2 adapted from data from J. Phys.: Condens. Matter 24 (2012) 475504 and a Scanning-Tunnelling Microscope (STM) image of certain thallium compounds adapted...
Cooling with Light! Zeeman, Laser, Chirp and Doppler Cooling Explained
Просмотров 23 тыс.5 лет назад
In this video, we look at some of the key physics behind a handful of techniques that can drive atoms to incredibly cold temperatures using nothing but light.
A&S Journal Club: How to Make Heat Flow From COLD to HOT
Просмотров 7 тыс.5 лет назад
In this session of the Atoms and Sporks Journal Club we're going to be talking about the paper "Heat flowing from cold to hot without external intervention by using a “thermal inductor”" (Science Advances, Vol. 5, no. 4, eaat9953) which can be found here: advances.sciencemag.org/content/5/4/eaat9953
Boltzmann's Tyranny and Quantum Tunneling: The End of Computing?
Просмотров 17 тыс.5 лет назад
Boltzmann's Tyranny and Quantum Tunneling: The End of Computing?
Holiday Physics: The AMAZING Thermodynamic Properties of Snow and Ice
Просмотров 2,4 тыс.5 лет назад
Holiday Physics: The AMAZING Thermodynamic Properties of Snow and Ice
A&S Journal Club: How DOES That Trillion FPS Camera Work?
Просмотров 2,2 тыс.5 лет назад
A&S Journal Club: How DOES That Trillion FPS Camera Work?
Tours Through Physics: Nanoplasmonics (Part 2), Sensing, Science and Diagnostics
Просмотров 12 тыс.5 лет назад
Tours Through Physics: Nanoplasmonics (Part 2), Sensing, Science and Diagnostics
Tours Through Physics: Nanoplasmonics, Tiny Spheres with BIG Potential
Просмотров 27 тыс.5 лет назад
Tours Through Physics: Nanoplasmonics, Tiny Spheres with BIG Potential
The 2018 Physics Nobel Prize, Part 2: What IS Laser Chirped Pulse Amplification?
Просмотров 44 тыс.5 лет назад
The 2018 Physics Nobel Prize, Part 2: What IS Laser Chirped Pulse Amplification?
The 2018 Physics Nobel Prize: What ARE Optical Tweezers?
Просмотров 67 тыс.5 лет назад
The 2018 Physics Nobel Prize: What ARE Optical Tweezers?
No, Changing Electric Fields DON'T Cause Magnetic Fields; The Real Origin of Electromagnetic Waves
Просмотров 135 тыс.5 лет назад
No, Changing Electric Fields DON'T Cause Magnetic Fields; The Real Origin of Electromagnetic Waves
Me & my shadow....
Nice
I was hoping that this video would explain the delay of about 45 days between the longer days (and also more vertical sunlight) and temperature. A typical monthly temperature chart will look like this: www.weather.gov/ddc/normalmean As one can observe, the hottest temperature is about a month and a half after the solstice. The same happens for the coldest days, they don't take place around Dec. 21st but around the beginning of February. Why does this happen?
I keep inventing things and then looking for them and finding out they've all been invented already.
I love this video! It helped me learn a lot while having fun!
I think you’ll enjoy Eric Dollard views on electricity.
What a great channel... i wish you the best
I’m doing a science SRP on liquid crystals this video is an a game changer thank the lord I saw this
I didn’t watch but you got a lot of physics on this topic so you should start by rigorously define what you mean by “change”
The guy does not even know that the electric and magnetic fields are NOT in step with each other...
Free electrons? I'll take your entire stock!
Your website appears offline.
I think we need to go back to 1/r² and the three dimensional physics of the Inverse Square Law! Spherical 4πr² geometry is fundamental to this process and this is based on Huygens’ Principle of 1670 that says, “Every point on a light wave front has the potential for a new spherical 4πr² light wave". The spherical interior is naturally 3D and we can think of each point on the curvature of the wave front as a potential photon ∆E=hf electron interaction as vibrations forming resonance. The spherical 4πr² surface forms a 2D boundary condition or manifold for the uncertainty ∆×∆pᵪ≥h/4π of everyday life.
8:00 not true about OLEDs.
Fun fact copper don't rust. Cover Copper around steel create electric magnetic.. Power copper up.
Click bait ,refer to Griffiths introduction to Electrodynamics and find he answer urself
Since we are talking about magnets could a different way to say this be changing the wave distorts the electric field like when u put one magnet up to a phone or cpu and it messes with the screen but the computer has magnetic properties already metal and electronics but the phone by itself can still work
So interesting and enlightening for a beginner! Thanks Mr Atoms and Sporks. John Lampe ,sunny Perth, Western Australia.
Hello Mr Atom and Sporks. Thanks for the video which was extremely interesting, informative and different for a relative beginner in physics such as myself. John Lampe,sunny Perth,Western Australia.
I get it! Atoms and Sporks! Ha!
Make more videos please
honestly, very confusing explaination. making the explaination more complex by chewing the things. explaination is way different than the Video "TITLE"
love this channel and love your humor. i've been on laser youtube for the past two weeks and your channel is my favorite so far
"When I was in high school" tells a lot. A good analogy would be "sending water through a water hose" for a closed or open circuit.
Who are you and what degree do you have?
You're amazing, thank you 🙏
This is an unbelievably great video.
is this a form of surfaced-enhanced raman?
Can a mirrored room be designed so that photons from a light absorb and reflect at a rate that prevents radiation pressure expansion while maximizing reflectivity? Hence, one would turn on a light for 1 sec and the room would stay bright for 8 hours before going dark and the room does not break from the pressure
The disputed statement is the stand of Classical electromagnetic field theory. And is backed by Maxwell's equations.
So you have a minor mistake at 6:00. If you start moving the negative line charge, it will Lorentz contract and make a negative charge on the “wire”. Rather, you need to accelerate individual charges a la Bells Spaceship Paradox so they remain with constant spacing in the lab frame. This means that in their own frame at speed, they will spread out by the Lorentz factor gamma (the string in the paradox breaks). Moreover in their final rest frame the protons will be contracted by gamma, for a total charge density factor g - 1/g = gamma X beta….which works with the LT of E and B fields.
The mistake was to refer to "charges" rather than "charged particles" the source of all electric charges is charged particles.
That's not how you play pinball
This isn't instruction in how pinball is played.
This guy never learned Maxwell's equations. The first property of Mawxell's Equations is their linearity. Basically if A and B are two solutions of a linear system, then any linear combination of A and B is also a solution. This allows wireless communication. This video is the epitome of the Dunning-Kruger effect.
Hi guys. I m searching à men... Thé magnetic comes from the derivative of à sine, which is à cosine. So the maximum of magnetic field come 90° after the max of electric wave. Does somebody understand me? All the internet take the max of E in the same time of the max of magnetic, which is false. Do someone agree? There is two équations which explain derivative E = B and Derivative B=E in the four maxwell équations. Hello.
One only need to look at the generation mechanism for light: Lyman, Balmer, Paschen ... To derive what he is trying to explain. The time domain is involved. What he is missing in his explanation of time retardation is the very small distances mean very small times. A light second is approximately 300,000 Km (7.5 times the circumference around the equator, or the approximate distance from Earth to moon). You would need a very large velocity and special sensors to measure this and be accurate.
Sorry, i where wrong because derive only one time instead of two. So E=B.
At the very beginning of your video you state that, "Changing Magnetic Fields DON"T Cause Electric Fields". Within this Charge-centric formulation of Maxwell's Equations, what is the mechanism for the induced current in a wire loop when a permanent magnetic is in motion near the wire loop?
The better the channel the fewer subscribers. The free power with spark plugs and capacitors gets 10 billion hits
You are the one making misconceptions. The acceleration you do at 16:40 actually creates perfect electromagnetic sine waves, but there are multiple of them and this is their sum. Did you ever hear about the Fourier transformation? Your concept works until you get to the quantum mechanic, where charges are picky and do not react with every field they get in contact with.
keep doing it........
what an awesome explanation............thank you this really helped me a lot............A big thank you.......
This is an very good explanation, I've had 2 uni lectures that didnt make it as clear as this video did!
This video is gold
I did not understand it, so its a bad explanation with almost 0 animation of wavey electrons interacting with protons. i am utterly dissapointed at you and myself, but mainly you, because i hate feeling stupid, and your video does not explain the subject enough that i could understand, thus making me feel stupid. How dare you? !
So, like most thing they have no clue what they are looking at but pretend like they have it all figured out
Is it current or ... dated?
This is called "Philosophy of Science".
the real picture is the QED one, all this is classical/vague
Anyone know where to find any lectures dealing with nanobubbles with electrostatics? The paper is called Massive generation of metastable bulk nanobubbles in water by external electric fields. I haven't been able to find a video showing how to make these.
Then the obvious question.. can we conceive of a universe without charge but with EM fields. The answer certainly yes because we can find solutions that cover empty space. However physically may be impossible, just as gravity cannot exist without mass-energy.
As long as our theories only describe local phenomena, we can't really rule out the possibility of fields that aren't "sourced" by anything. GR definitely has no problem with a Ricci-flat world with no matter.
Yes but in terms of electric current, they are energy waves moving, but there's a charge....
Someone on an audio website insists that the electrical current in a power cord permanently affects, changes, undergoes some sort of molecular rearrangement of the dielectric material around it with its interaction with it and refers to it as "burn-in". I could understand that different insulating materials can affect the current through the wire but make permanent changes in the wire?