Quantum Light Created in Lab

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Sabine Hossenfelder

Sabine Hossenfelder

Күн бұрын

Пікірлер: 661
@rais1953
@rais1953 Жыл бұрын
Just in case of any misunderstanding, there's no suggestion of liquid water on or near the surface of the Moon. Some craters near the Poles where sunlight never reaches and temperatures are close to zero Kelvin are believed to contain large deposits of ice. These deposits may be available for use by lunar bases. Water also exists in chemical combination with other matter in some locations.
@SabineHossenfelder
@SabineHossenfelder Жыл бұрын
Right... Sorry, I seem to have forgotten to say this! Thanks for pointing out!
@rais1953
@rais1953 Жыл бұрын
@@SabineHossenfelder Thanks for that quick response. Love your work Sabine.
@absalomdraconis
@absalomdraconis Жыл бұрын
​@@SabineHossenfelder : You're hardly the first, and a dozen or more others may have already done it since this video was posted.
@sudazima
@sudazima Жыл бұрын
@@SabineHossenfelder just to put a point to this, the actual water content is about as wet as sahara desert sand. not exactly a swimming pool. the He3 content so low even with real fusion it may not breakeven.
@garypippenger202
@garypippenger202 Жыл бұрын
I am wondering whether the superfine dust on the moon will be a problem for harvesting the water out of the "ice."
@johnmichael9713
@johnmichael9713 Жыл бұрын
Dr. Hossenfelder, you are the perfect combination of professionalism and humor. Those of us who really study physics know that you are an entirely different calibre of intellect than these popular physics personas like Neil DeGrasse Tyson and Michio Kaku. You're the real deal, and yet you manage to maintain levity and clarity in your discussions and explanations. Exactly what we need to repatriate the study of physics with brilliant young minds for the next few generations. Thank you immensely for all that you are doing for the education of the masses. You're making physics fun, which is perhaps even more impressive than your top-tier acumen in the field.
@aaronperelmuter8433
@aaronperelmuter8433 Жыл бұрын
How can one repatriate anything other than a person? And since when is the study of physics a purely national phenomenon that was taken abroad? That makes no sense whatsoever?
@aclearlight
@aclearlight Жыл бұрын
Well said!
@Mavendow
@Mavendow Жыл бұрын
​@@aaronperelmuter8433 People who understand and want to pursue science will go abroad if the funding and education does, and frankly, the education side of this equation has been gone for decades. The repatriation in question IS a person; one with a mind which can follow the science.
@Mavendow
@Mavendow Жыл бұрын
@user-jm5mf5pu4j Says the guy who has a username I can't even directly quote.
@TheHexCube
@TheHexCube Жыл бұрын
👍👍👍
@maalikserebryakov
@maalikserebryakov Жыл бұрын
Sabine, your channel is one of the places I consider “home”
@richarddawkinsatheist9289
@richarddawkinsatheist9289 Жыл бұрын
These days I eagerly wait for Sabine's new videoes to come out. And, they have not disappointed me so far. Thank you, Sabine! Keep up the good work.
@timothyvincent7371
@timothyvincent7371 Жыл бұрын
Quantum bound photons, what an idea! I'm retired now but have practiced many spectrometric techniques over the years and have never considered the possibility. I wonder if it is somehow related to RAMAN spectrometry, but in reverse. Thank you Sabine for always including references to papers cited.
@lisaschuster686
@lisaschuster686 Жыл бұрын
@/O/ Share?
@davidrandell2224
@davidrandell2224 Жыл бұрын
A prism is a mass/size spectrometer. Light is a cluster of expanding electrons. The red portion bends the least due to being a larger cluster within the ‘ white ‘ light.” The Final Theory: Rethinking Our Scientific Legacy “, Mark McCutcheon.
@davidrandell2224
@davidrandell2224 Жыл бұрын
@/O/ QM classicalized in 2010. Juliana Mortenson website Forgotten Physics uncovers the hidden variables and constants and the bad math of Wien, Schrodinger, Heisenberg, Einstein, Debroglie,Planck,Bohr etc. Light is a cluster of expanding electrons- particles, objects, matter- moving at the speed of light “c.” SR wrong due to reference frame mixing and bad math. No energy, charge, photons, waves, spin, fields, potential, quantum,quarks, space, time, space- time, information, aether, etc. All Standard Theory/ Model replaced by Expansion Theory: see reference.
@aclearlight
@aclearlight Жыл бұрын
@@davidrandell2224 Electrons have mass, photons can carry momentum but they massless...weird, I know, but you might want to revise your hypothesis a bit after verifying that.
@aclearlight
@aclearlight Жыл бұрын
I was pretty blown away by this too (as a fellow retired scientist). For a look at another very surprising bound state "odd couple", look up the word "positronium". It's a fleeting bound state of 1 electron with one positron...has recordable spectral transitions between allowed "molecular" orbitals and everything. Even has measurable reaction rates with ions and small molecules in molecular beam type work. There may even be EPR spectra recoded by now, I'm not sure.
@TheHexCube
@TheHexCube Жыл бұрын
That Liz Truss joke was pure gold. 👌
@UFO-Ark
@UFO-Ark Жыл бұрын
I didn't understand the punch line 😮
@TheHexCube
@TheHexCube Жыл бұрын
@@UFO-Ark There was a competition in one of our UK newspapers, to see if a lettuce would last longer than Liz; there was even a webcam fixed on the lettuce to see how long it would take to wilt/spoil. The lettuce won!
@marca9955
@marca9955 Жыл бұрын
@@TheHexCube Okay, but how would Truss use a lettuce, super or not, to return to power? Unless I'm misunderstanding, Sabine only associated the two but didn't give any meaning. If she'd said super lettuce, which Truss hopes might outlast Sunak, it would have made some sense of the association.
@TheHexCube
@TheHexCube Жыл бұрын
@@marca9955 You're absolutely correct! I think I must have a German sense of humour. Either that, or I'm trying to appear much more intelligent than I really am. Thanks for flagging this up. 🙁
@marca9955
@marca9955 Жыл бұрын
@@TheHexCube Hard to read but in case you're being sarcastic (if so, super sarcastic btw 👍 ) I think Sabine could do with a little constructive criticism for her phone gags, for example. That or at least do without the encouragement to distract from the strength of the channel, which is the accessibility and lightness of the science. It's nothing personal.
@bobwasilewski5768
@bobwasilewski5768 Жыл бұрын
I can't say it better than what John Michael posted. Thank you for all that you are and do. I see that you were born in 1976, two years after I graduated high school. During that time, you have mastered Theoretical Physics, and a number of other disciplines. Also during that time, I have mastered the use of a variety of can openers. I also used to be able to dress a bed sheet with Hospital Corners. Hey, we all have our abilities. But seriously, thank you for being you.
@babykosh5415
@babykosh5415 Жыл бұрын
Thank you ....thank you for being here....thank you for caring enough to do this!
@AlanTheBeast100
@AlanTheBeast100 Жыл бұрын
I liked the implantable fuel cell's operating logic: when the glucose level triggers it, it releases insulin causing the device to eventually stop. Very straightforward - like a thermostat. Question: how does the insulin get "in"? All jokes asside, having an app to monitor its workings is a fine idea. Just needs appropriate encryption/access control.
@absalomdraconis
@absalomdraconis Жыл бұрын
Probably the insulin is stored in a bag with a "refilling port". I vaguely recall that such things are already used in some implantable medical devices.
@l.a.wright6912
@l.a.wright6912 Жыл бұрын
The developers literally saw ultrakill and thought "yup that's actually a good idea"
@KeithCooper-Albuquerque
@KeithCooper-Albuquerque Жыл бұрын
Thanks for another great video, Sabine!
@Steve-Fish
@Steve-Fish Жыл бұрын
If you orbit the moon it sync's up perfectly with the wizard of oz, not a lot of scientists know that.
@jacobholmquist9994
@jacobholmquist9994 Жыл бұрын
I don’t know how true that is but I read it on the internet so I’m going to trust it completely
@Steve-Fish
@Steve-Fish Жыл бұрын
@@jacobholmquist9994 It was an old pop culture saying that if you play pink floyd's album darkside of the moon it sync's up with the movie the wizard of oz, I'm not sure how true it is and I believe powerful mind altering substances may have also played a part.
@shdwbnndbyyt
@shdwbnndbyyt Жыл бұрын
Sadly the creator of two of my favorite comic strips, the Wizard of Id & B.C, Johnny Hart recently died.
@xyz.ijk.
@xyz.ijk. Жыл бұрын
Dude, literally *everyone* knows that the moon syncs (but not “sync’s”) up perfectly with the Wizard of Oz. 😂 BTW … Pluto IS a planet, and I’ll k1ll any man who claims otherwise. 😮
@projectw.a.a.p.f.t.a.d7762
@projectw.a.a.p.f.t.a.d7762 Жыл бұрын
@@Steve-Fish it's true but the album has to be put on repeat. The album plays twice over top the movie. It truly does lineup. You start the album after the lions last roar. It's on KZbin. It's titled dark side of the rainbow.
@windywednesday4166
@windywednesday4166 Жыл бұрын
You are the best science news out there! You are quick, concise, and easy to understand. You cover a lot of area in a short time, accurately and you're funny.
@mozezo8
@mozezo8 Жыл бұрын
That's great to watch this news with your explanations .I think you give a simple and creative explanation for the material.
@bobaldo2339
@bobaldo2339 Жыл бұрын
Nice hair too!
@lisaschuster686
@lisaschuster686 Жыл бұрын
@@bobaldo2339 I noticed the hair too!
@paulmendoza9736
@paulmendoza9736 Жыл бұрын
@@lisaschuster686the hair?
@CNoahDavis
@CNoahDavis Жыл бұрын
She cracks me up.
@lisaschuster686
@lisaschuster686 Жыл бұрын
@@paulmendoza9736, She looks good for a scientist. :) Her hair is sometimes Einstein-esque.
@jpe1
@jpe1 Жыл бұрын
1:40 if you listen carefully to the end of the song “Eclipse” (the last song on the Pink Floyd album _The Dark Side of the Moon_ ) you will hear Gerry O’Driscoll (doorman at Abbey Road Studios at the time of recording) saying “There is no dark side in the moon, really. Matter of fact, it’s all dark.”
@Onihikage
@Onihikage Жыл бұрын
"A superlattice is not to be confused with a superlettuce - that's how Liz Truss plans to return to power." One of these days I'll be prepared for Sabine's stand-up comedy, but today, my sides are in orbit.
@l.a.wright6912
@l.a.wright6912 Жыл бұрын
12:27 Humanity is dead Blood is fuel. Hell is full
@kounaboy7011
@kounaboy7011 Жыл бұрын
6:55 eigenfunction, gauge, eigenvalues, potential, well, lowest state, membrane, hamiltonian, shrodinger time equation, psi, psi derivative, quanta, constructive, probability, chromodynamics, couple, entanglement, uncertainty principal, cavity radiation, hall radiation, majoramas etc. So yes a photon is a quanta. But a quantum photon is a very specific quanta of a photon. Nice, good job Sabine for talking about this paper.😊
@janerussell3472
@janerussell3472 Жыл бұрын
The theoretical underpinning of material sciences is, I suppose, band gaps and holes for electrons to fall into. An understanding of crystallography would be helpful. The growth of porous single crystalline-like monoliths ( PSC ) is difficult; but using two different lattice orientations they can still get good photoelectrochemical properties. For example, band gap engineering introduces Titanium3+ gap into the lattice to generate TinO2n−1 with Magneli phase, so the created active structure can be limited to the lattice with two-dimensional surface. Independent PSC-like ( porous single crystalline ) TinO2n−1 delivers high photocurrent of 1.8-5.5 mA · cm−2 at room temperature and does not decay for 10 hours, a Chinese group has found. It would have to be the Chinese, of course...because of the massive research defunding in the West. It will be the Chinese who develop economic hydroysis and photocatalysis and solar energy conversion...and get that base on the Moon, if one isn't already there. Mars is a different proposition...and it's not certain a human carrying craft could take off from Mars.
@AFewSmallFish
@AFewSmallFish Жыл бұрын
Sabine, I really appreciate you always posting your new videos right at my lunch time. Very thoughtful of you 😉
@TimpTim
@TimpTim Жыл бұрын
Getting to a point where I'm less concerned about mind controlled robots and more concerned about robot controlled minds.
@absalomdraconis
@absalomdraconis Жыл бұрын
There's been enough people going around mindlessly already that there's no point in worrying about that last one. At most, a robot controlled mind might show itself to be more of the same. Philosophies and ideologies have been producing that part of the population for millenia.
@TerryBollinger
@TerryBollinger Жыл бұрын
7:38 _“If you want to compute with photons, getting them to interact would be handy. So that’s why physicists are studying these bound states.”_ Sabine’s apt assessment on this point has broad technology, cost, and energy implications for quantum computing. Photon quantum interactions are vastly more accessible and robust than atomic ones primarily due to their extremely low total energies compared to atoms and even electrons. The power of photon quantum effects shows up, in particular, in the calculation power of a single photon encountering a human-scale or larger lens since the photon can calculate the Fourier transform of that enormous room-temperature lens literally at light speed, expressing that result as a precise pinpoint of photon reception at the focus of the lens. While QED predicts this lens effect in exquisite detail, the focus in QED is on leveraging the enormous conventional computing power to estimate the behavior of a single photon. However, the inverse relation is necessarily also true: There exist cases in which a single photon can stand in for that same enormous quantity of classical computing power. The trick is configuring that remarkable speed and efficiency into a broader calculation form. The thing missing - and this is Sabine’s and the paper’s point - is the ability to transfer quantum state information between photons without reducing them to trivial classical states. If photon binding can do this, new classes of exceptionally low-power room-temperature quantum computation devices may be possible. However, such non-qubit devices would present interesting research, technology, and mathematical challenges. One way of phrasing the problem is this: Can general-purpose quantum computation be expressed in terms of “entangled Fourier transforms” rather than qubits? While less intuitive to humans, Fourier transforms arguably are a far more natural way of expressing the kinds of transformation accomplished most easily and cheaply in quantum mechanics. In sharp contrast, qubits begin with the profoundly classical and mostly computer-inspired concept of sharply defined binary states. Almost reluctantly, the definition then adds quantum superposition at the last moment. This over-specification means that non-qubit formalisms are more likely to uncover the full power of quantum-based computation. But why would I say qubits are more classical than quantum? After all, they are the foundation of much physics speculation and massive and well-funded quantum computation programs. Surely they must be “ideal” examples of quantum superposition? Well… not really. The canonical example of a qubit is a fermion with the property called half spin. A half-spin electron or atom can be in only one of two states, “up” or “down.” Half-spin appears to be an open-and-shut case for qubits: You assign one spin direction as 1, the other as 0, and _voila!_ you have a qubit. The problem is this: While an electron may well have only two states, the number of _orientations_ of those states is infinite and itself quantum. A massive classical magnet provides an exquisitely precise up-down definition for any electrons in its fields. Those electrons _do_ become qubits because they have both binary states and sufficient orientation to make that state meaningful in our classical world. As the field grows weaker - that is, as the influence of the outside classical world wanes - the certainty of the encoded bits fades until quantum computation is no longer possible. The spins remain, but the _qubits_ depend on their classical hosting. The qubit concept is better thought of as a product of the 1990s fascination with the growing power of computers and software than a direct interpretation of quantum phenomena. It is, for example, difficult to imagine a concise way to express the QED-style Fourier transformation of a photon traveling through a lens using only qubits. It’s possible, but it’s also not persuasive. (a PDF copy of this 2023-04-05 comment is available at sarxiv dot org slash apa)
@tjmozdzen
@tjmozdzen Жыл бұрын
Interesting on the photons. A twist on Dirac's statement that photons only interact with themselves - the ultimate introvert! Perhaps there is hope for photons being more social than originally thought.
@Ahuisnl
@Ahuisnl Жыл бұрын
Lived the ME/CFS Healthcare terror with my ex for decades. She got depressed because doctors kept telling her it was a problem between her ears. Lost her job, etc. Even without a cure, acceptance will already be a big relief..
@johnwilliams3555
@johnwilliams3555 Жыл бұрын
Were those gold cubes playing Tetris?
@waltersistrunk4200
@waltersistrunk4200 Жыл бұрын
Thanks Sabine. All the news that’s fit to print! I have to watch it three times, but I need to know it.
@mitseraffej5812
@mitseraffej5812 Жыл бұрын
3:50 “ A cup of tea that’s not made out of recycled urine” But who knows what the water that exists on the moon has been up to ( or through) over the last umpteen billion years?
@helmutzollner5496
@helmutzollner5496 Жыл бұрын
Interesting developments, especially the implant fuel-cell. That opens a lot of new opportunities once it is working properly.
@QuesoCookies
@QuesoCookies Жыл бұрын
A real-time, comprehensive measurement of all your health parameters would be incredible for diagnosis, but let's make sure private companies (particularly insurance) and government agencies are expressly forbidden from touching this data.
@bundleofperceptions1397
@bundleofperceptions1397 Жыл бұрын
Sabine is my favorite physicist -- she excites my quantum field.
@gefginn3699
@gefginn3699 Жыл бұрын
Great post Sabine. I always enjoy tuning into your newest post. Until then... 😍
@abderahmandr.yahiaoui2111
@abderahmandr.yahiaoui2111 Жыл бұрын
Professor think you with all respects 😘😘
@jeffgriffith9692
@jeffgriffith9692 Жыл бұрын
Yes! This week's Science News!!
@PeacefulCountryLife
@PeacefulCountryLife Жыл бұрын
I love this new format! :D
@MCsCreations
@MCsCreations Жыл бұрын
Thanks for all the news, Sabine! 😊 Stay safe there with your family! 🖖😊
@kempedkemp
@kempedkemp Жыл бұрын
I enjoy your presentations very much. I do not have a scientific mind but enjoy learning something about what is going on in the world of science. Thank you for the entertaining education!
@mindblown42069
@mindblown42069 Жыл бұрын
I get so excited when I see a new Sabine video in my sub feed. Love from the UK
@ralfgustav982
@ralfgustav982 Жыл бұрын
Too Little Too Late: Average Wellbeing declines. Giant Leap: Average Wellbeing grows exponentially. That's the take-away.
@billbillson3129
@billbillson3129 Жыл бұрын
Outstanding! Thank you for sharing!!
@TheRealStructurer
@TheRealStructurer Жыл бұрын
Great news coverage as usual. Great place to get a wide variety of science new. Well done Sabine 👍
@travellerFC
@travellerFC Жыл бұрын
"Quantum light" refers to the case in photon statistics where a beam of photons follows a sub-Poissonian distribution and, thus, their states not be described by a series of sinusoidal waves or classical electrodynamics. This would be light emitted from a single-photon emitter like a quantum dot
@PhysicsLaure
@PhysicsLaure Жыл бұрын
The Korean TV show "the silent sea" is about to get real!
@andrewberkin5505
@andrewberkin5505 Жыл бұрын
As a Victorian, 30-40oC is a quite normal temperature range, so it makes the ink more viable. though 68oC is a touch too warm
@TheKeule33
@TheKeule33 Жыл бұрын
oC??
@declandougan7243
@declandougan7243 Жыл бұрын
@@TheKeule33 that’s a degree symbol.
@michaelmicek
@michaelmicek Жыл бұрын
​@@TheKeule33°C
@kosimochaosbold7544
@kosimochaosbold7544 Жыл бұрын
Hallo Dr.Hossemfelder. I think there's a mistake regarding the activation of the blood-fueld device. It should activate when blood sugar levels RISE, not when they drop.
@stevesloan6775
@stevesloan6775 Жыл бұрын
Has anyone ever thought that not chopping down all the major echo system is the real problem we are globally missing?
@michealoflaherty1265
@michealoflaherty1265 Жыл бұрын
Could you use superlettuce to make a Roquette?
@paultraynorbsc627
@paultraynorbsc627 Жыл бұрын
Thanks Sabine ☕
@michaeltellurian825
@michaeltellurian825 Жыл бұрын
Quantum Light: What do you call Alternative medicine that works? Light: Medicine
@dannypope1860
@dannypope1860 Жыл бұрын
Wow! We ALMOST got through an entire episode without pushing climate alarmism!
@bioxbiox
@bioxbiox Жыл бұрын
Thank you for the great story! A masterpiece, as always.
@ramkumarr1725
@ramkumarr1725 Жыл бұрын
Eagerly awaited news curated expertly and presented enthusiastically.
@raktoda707
@raktoda707 Жыл бұрын
Brilliant ! Happy Holidays
@ralfgustav982
@ralfgustav982 Жыл бұрын
I can't wait to see the images and videos they record on the next moon landing.
@Self_Evident
@Self_Evident Жыл бұрын
Who knows what moisture lurks in the dark corners of the moon... The Shadow knows...
@brian554xx
@brian554xx Жыл бұрын
"photon-genic" renewed my love for Sabine.
@numbersix8919
@numbersix8919 Жыл бұрын
Thanks Dr H !
@samlovebutter
@samlovebutter Жыл бұрын
12:30 "Into The Fire" starts playing
@Thomas-gk42
@Thomas-gk42 Жыл бұрын
Wow, so much reliability in being informed by your channel, thank you. Being a little bit smarter, I go dusting my solar panels now
@israelsadovnik
@israelsadovnik Жыл бұрын
From "Let there be light!" to Quantum physics. In the beginning there was light. This is the main starting point in the universe The first thought that comes to mind is we are talking about Sunlight. Wrong. There is another kind of light - Planck's quantum of light (h) And Planck's quantum dualistic light (h) is still a mystery. We don't know what a quantum of light is. Therefore, the basic physics should start - "In the beginning there was Planck's light - h".
@owenlaprath4135
@owenlaprath4135 Жыл бұрын
Our Moon is not showing much promise, despite some people playing numbers games. Most basic math shows, that even these new findings show very little water, and humans would easily waste it in a very short time. 300 billion tons sounds a lot, but to understand what we are dealing with, assume you want to dump it in a lake one meter deep (that is 3.2 feet), IF you can manage to somehow squeeze all those rocks and glass-beads, like Tom-cat used to do in the Tom and Jerry cartoons with his wine bottle, to get all that water out. One cubic meter of water, so 1x1x1 meter, is one ton! 300 billion cubic meters spread one meter deep, we first divide by 1 meter. Then we take the square root of 3 billion square meters, which is about 547 thousand meters. Sounds a lot, but is really only a square with each side being 547 Kilometers long, or roughly 340 miles. So our "lake" is a 1 meter deep puddle, that barely covers your belly-button when you stand in it. How long would it last, if we start populating Moon with Earthlings seeking living space in space? Easily found example: New York City has about 8.5 million people and uses 4.5 million cubic metres of water every day! Since NYC does not have a whole bunch of sprawling single home properties with big lawns to water, it is actually frugal compared to California! So a colony that size, which would spread very thin on Moon, would use all 3000 million tons (that is 3 billion) in only 3000/4.5 = 666.666 days, less than 2 years. I do not buy into superstitions, but even those without a clue about math and science should at least get scared about the number of days with water, that this very simple math shows.
@agw5425
@agw5425 Жыл бұрын
What I would like to know is why are photons always moving att LS, what keeps them moving and what set them in motion in the first place? Are they all the same regardless of source? Can we even have a stationary photon at all? We just accept that light/photons move and that LS is both max and min speed, would photons just vanish/decay into nothing if stopped or even slowed a little? I have never heard anyone address that question anyware, have you?
@madshorn5826
@madshorn5826 Жыл бұрын
Nothing is needed to keep stuff moving :-) It is _changing_ velocity that requires outside interaction. Electromagnetic radiation moves at light speed because ... it does. Maxwell's equations show that, but that is a model not a reason. In science we observe nature and describe it. Questions like "why" is not scientific :-) Individual photons are kind of self sustained and have no residue of what produced them. They are pure energy. _Ensembles_ of photons have energy distributions that can tell you quite a lot about the source though :-D Astronomers like that because it is impractical to go to the stars to study them ;-) You can kinda stop light in a Bose-Einstein condensate as the danish physicist Lene Hau showed, but it isn't quite stopping it like stopping a car. Is complicated ;-) If you stop a photon it ceases to exist in the sense that the energy is transformed into say heat or excitations of atoms. All these questions are addressed in high school physics classes or entry level university courses. I recommend books by Paul Hewitt for self study. He is exceptionally understandable for people new to physics. Enjoy! Physics is a worthwhile rabbit hole that will blow your mind again and again :-D PBS Spacetime here on KZbin talks about all this, and there are other channels too, but taking a basic course or reading a basic highschool book is probably less confusing in the long run :-)
@agw5425
@agw5425 Жыл бұрын
@Wind Rose As they are light and I did not specify "in vacuum" it's still LS, but the question was why they move as fast as they do at all from a stationary source. Do a photon from earth sea level speed up once it hits space if so why and how, those are the things I wanted to know.
@madshorn5826
@madshorn5826 Жыл бұрын
@@agw5425 The reason light slows down in a medium like air is the constant absorption and reemission by air molecules. So the light doesn't speed up once it reaches space. It just isn't slowed down anymore :-)
@madshorn5826
@madshorn5826 Жыл бұрын
@@agw5425 "Why they move as fast as they do at all from a stationary source?" When you shout your vocal chords vibrate the air. This vibration(energy) is propagated from air molecule to air molecule at the speed of sound from a stationary source. Light is an 'electromagnetic vibration' where electric energy becomes magnetic energy that becomes electric energy that ... while propagating forward at the speed of light. This is a function of the way our universe is set up. In other universes the speed of light could conceivably be higher or lower. Why our universe has a c = 300000 km/s is anyone's guess at the moment. "Sh*t happens" is my favorite answer :-)
@mariodegroote6756
@mariodegroote6756 Жыл бұрын
in many ways humanity pushed itself in a corner, lucky we have you sabine, our scientific light in the darkness. and ofc, the telephone ;D as always respect for your work sabine!
@lindonwatson5402
@lindonwatson5402 Жыл бұрын
thoroughly enjoy these updates, thank you
@archlich4489
@archlich4489 Жыл бұрын
Cheers & best regards, Dr. Hossenfelder!
@hcellix
@hcellix Жыл бұрын
I was a young kid when I watched the moon landing. My childhood had a sense of wonderment and I had many moon toys. This part is crazy. My family was watching the TV and it started to go fuzzy with wiggle lines and we thought maybe the antenna had fallen so my mom, brother and my sister went to check what was going on. When outside in the state of WV we saw 3 lights in the sky and they were moving around but not fast. Then little light came out of the bigger lights and it was a game changer. It was reported in the paper in Huntington, WV and My brother's drawing was accepted and was put in the paper. I believe we still have that paper with my brother. Anyway it was reported by lots of people but I don't recall how many. I do remember that the newspaper printed that experts said it was swamp gas. At the end of that UFO sightings the baby lights went back into the bigger lights and It took off and just disappeared or at least that's what it looked like to me. When that happens to a boy you are never the same. First time I ever said anything but at 66 I thought I better put it out on the web where it will wander around until the end of our time on this planet. Good Day. Cliff
@johnrichardson7629
@johnrichardson7629 Жыл бұрын
New Sabine video is always great news!
@RobinMichael64
@RobinMichael64 Жыл бұрын
@11:18 Am I the only one who initially thought the circle at the right of that illustration was depicting a red bowl of Chex cereal?
@drampadreg1386
@drampadreg1386 Жыл бұрын
There are hyper cars that use carbon fiber and titanium for the monocoque, and it's lighter than just carbon fiber alone, they developed some special primer that allowed the fusing of the two materials. This could help! Someday I'll get the number for that phone you know...
@Bat_Boy
@Bat_Boy Жыл бұрын
That moog intro gives me retro futurism vibes of the 70s. 👍
@tedquaker954
@tedquaker954 Жыл бұрын
Thank you. God Bless
@odizzido
@odizzido Жыл бұрын
Excellent as always :) I like this in terms of helping me know what's happening in the world and I also enjoy your humour.
@seanhewitt603
@seanhewitt603 Жыл бұрын
I like the bit on the gold nano cubes, pretty cool...
@b.questor
@b.questor Жыл бұрын
I admire most those who know how to entertain and enlighten. Knowledge tempered with levity forms true wisdom.
@imadeyoureadthis1
@imadeyoureadthis1 Жыл бұрын
10:11 That's tetris with nanocubes made of gold.
@jfgenie
@jfgenie Жыл бұрын
Sabine always has the best jokes / punch lines! lol
@brendakrieger7000
@brendakrieger7000 Жыл бұрын
Thanks!
@JamesLaserpimpWalsh
@JamesLaserpimpWalsh Жыл бұрын
Thanks Sabine.
@eruiluvatar236
@eruiluvatar236 Жыл бұрын
10 seconds may not be bad at all if something like quantum memory refresh is possible. After all the DRAM that we use in all modern computers is usually specified to be refreshed every 64ms. Although for high quality chips in certain operating conditions or if some errors are ok, the data may last seconds. Of course a refresh operation without collapsing the wavefunction may or may not be doable, I have no idea.
@Ithirahad
@Ithirahad Жыл бұрын
There's a bit of helium-3 on the Moon, but considering the sheer amount of soil you'd have to churn up to get a meaningful amount, one wonders if it'd be more efficient to just take all the solar panels for your "mining" machines (more like a weird hybrid of large-scale farming equipment and construction digging machines) and beam the power directly back to Earth via microwaves.
@Thomas-gk42
@Thomas-gk42 Жыл бұрын
You're entirely correct, better stay down here and dust them daily
@jfverboom7973
@jfverboom7973 Жыл бұрын
"Beam the energy back to earth" Don't think earth needs more heat deposited into the atmosphere. It is already iffy.
@mobatyoutube
@mobatyoutube Жыл бұрын
@Sabine near @3:29, you said that having a moonbase would let us "mine helium three." Why does a moonbase make that possible, and how do you do that?
@ronalddavis670
@ronalddavis670 Жыл бұрын
Love your show, makes me think
@edreusser4741
@edreusser4741 Жыл бұрын
Unfortunately, Vanadium's cost is too high for many of the most desired uses. Other uses for example include as the electrolyte in aqueous flow batteries. Using it for building insulation is probably outside the cost/performance curve.
@stargazer7644
@stargazer7644 Жыл бұрын
Considering that JWST would have cost less if it had been made of solid gold, I'm not sure that the cost of vanadium (15 times less than gold) is much of a problem for space missions.
@parhwy
@parhwy Жыл бұрын
"Keep dusting those solar panels" is **chefs kiss** peak humour-in-apocalypse truth.
@nagualdesign
@nagualdesign Жыл бұрын
Love the pronunciation of "quadruped". 😆
@boatbrokerpro1323
@boatbrokerpro1323 Жыл бұрын
When scientists calculate the estimated gravity of a Galaxy, apart from solid mass such as planets etc, do they include all the radiant energy (electromagnet waves) converted to mass in the calculation, to work out the total gravity of a Galaxy?
@albertdehn8381
@albertdehn8381 Жыл бұрын
Thanks for sharing 👍😀
@ElithiosX
@ElithiosX Жыл бұрын
I researched vanadium oxide for application in smart windows back in 2021, at the university of Bordeaux in France :D We were trying to bring the transition temperature down to room temperature via transition metal doping. Unfortunately my attempts only made the transition temperature go up, which wasn't helpful xD Still made for my first published paper :D I'm happy someone finally managed to make it work though! I assume their method also fixes the "turning the window way too yellow" problem
@petevenuti7355
@petevenuti7355 Жыл бұрын
Thank you again for my dose of science news! Only downside is that the old paper publication didn't need electricity where watching your videos does, but on the plus side there is your sense of humor 😏
@RememberTheChase
@RememberTheChase Жыл бұрын
Thank you Sabine!❤
@scicritic
@scicritic Жыл бұрын
my only remark is that it might be worth switching to a slightly higher video resolution. at least 1440p. cause now it looks a little blurry when i go fullscreen. but anyway, your science news are the best in the internet)
@zeryphex
@zeryphex Жыл бұрын
7:23 Is "cavity QED" a step toward a unifying theory of everything? If you need an "absence of everything" for photons to start actually interacting with each other, then why/how that happens might also explain gravitons or neutrinos. Would neutrinos interact with each other in a likewise environment?
@russbell6418
@russbell6418 Жыл бұрын
Love your stuff. Incidentally, quadruped is one of those odd 20th century words created to define the number of pedal appendages, so the “ped” rhymes with “said”, giving it 3 syllables. (There are also biped, and who knows - maybe uniped.)
@michaelmicek
@michaelmicek Жыл бұрын
That was borrowed from French sometime before 1646
@erinm9445
@erinm9445 Жыл бұрын
Sabine's pronunciation of quadruped was the cutest thing I've seen all day ❤
@plemli
@plemli Жыл бұрын
Word play by Sabine to imply we are d(r)uped four times.
@johnbould7544
@johnbould7544 Жыл бұрын
@12:48, “when blood sugar level drops”? Should it be when blood sugar levels rise?
@martinbechard
@martinbechard Жыл бұрын
Add the end of the Pink Floyd record, if you listen carefully you can hear someone say: “there is no dark side of the moon, it’s all dark” so they kind of agree with you ;) great video as always!
@peersvensson9253
@peersvensson9253 Жыл бұрын
"Quantum light" usually refers to non-classical states of light, i.e. states which cannot be described by classical electrodynamics
@haldorasgirson9463
@haldorasgirson9463 Жыл бұрын
Gold Nanocube Tetris. Might make a decent phone game.
@MichaelBurggraf-gm8vl
@MichaelBurggraf-gm8vl Жыл бұрын
Pardon, what ?! Superlettuce in space ? Thank you for that video.
@antimattv
@antimattv Жыл бұрын
Glass beads from the moon would make wonderful jewelry.
@tsamuel6224
@tsamuel6224 Жыл бұрын
Can't think for us??? Let's make Sabine President of the US....... Oh..... Not born here. Oh, well, Sabine can't think for us. Back to Brilliant.
@yourguard4
@yourguard4 Жыл бұрын
The solution: You become president and let her think for you ;)
@mceajc
@mceajc Жыл бұрын
Thanks for the hard work you put in - this weekly video is a definite highlight of my week!
@thaddadeodead
@thaddadeodead Жыл бұрын
I love the super rosy projection of wellbeing going up and up after drastically changing to "clean energy" that doesn't exist yet. I'm assuming they aren't proposing nuclear. I have questions about their models...
@andygoldensixties4201
@andygoldensixties4201 Жыл бұрын
I wonder, if there is so much water on the moon, why it never rains down here
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