Electrons DO NOT Spin

Поділитися
Вставка
  • Опубліковано 6 лип 2021
  • Sign Up on Patreon to get access to the Space Time Discord!
    / pbsspacetime
    Quantum mechanics has a lot of weird stuff - but there’s thing that everyone agrees that no one understands. I’m talking about quantum spin. Let’s find out how chasing this elusive little behavior of the electron led us to some of the deepest insights into the nature of the quantum world.
    Spin Renderings by the Incredible Jason Hise
    entropygames.net/
    Check out the Space Time Merch Store
    www.pbsspacetime.com/shop
    Sign up for the mailing list to get episode notifications and hear special announcements!
    mailchi.mp/1a6eb8f2717d/space...
    Hosted by Matt O'Dowd
    Written by Graeme Gossel & Matt O'Dowd
    Graphics by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal & Stephanie Faria
    GFX Visualizations: Katherine Kornei
    Directed by Andrew Kornhaber
    Assistant Producer: Setare Gholipour
    Executive Producers: Eric Brown & Andrew Kornhaber
    End Credits Music by J.R.S. Schattenberg: / multidroideka
    Special Thanks to Our Patreon Supporters
    Big Bang Supporters
    Kyle Bulloch
    Ananth Rao S
    Charlie
    Mrs. Tiffany Poindexter
    Leo Koguan
    Sandy Wu
    Matthew Miller
    Scott Gray
    Ahmad Jodeh
    Radu Negulescu
    Alexander Tamas
    Morgan Hough
    Juan Benet
    Vinnie Falco
    Fabrice Eap
    Mark Rosenthal
    David Nicklas
    Quasar Supporters
    Ethan Cohen
    Stephen Wilcox
    Christina Oegren
    Mark Heising
    Hank S
    Hypernova Supporters
    william bryan
    Marc Armstrong
    Scott Gorlick
    Nick Berard
    Paul Stehr-Green
    Muon Marketing
    Russell Pope
    Ben Delo
    L. Wayne Ausbrooks
    Nicholas Newlin
    DrJYou
    Антон Кочков
    John R. Slavik
    Mathew
    Danton Spivey
    Donal Botkin
    John Pollock
    Edmund Fokschaner
    Joseph Salomone
    Matthew O'Connor
    chuck zegar
    Jordan Young
    m0nk
    Julien Dubois
    John Hofmann
    Daniel Muzquiz
    Timothy McCulloch
    Gamma Ray Burst
    Kent Durham
    jim bartosh
    Nubble
    Chris Navrides
    Scott R Calkins
    Carl Scaggs
    G Mack
    The Mad Mechanic
    Ellis Hall
    John H. Austin, Jr.
    Diana S
    Ben Campbell
    Lawrence Tholl, DVM
    Faraz Khan
    Almog Cohen
    Alex Edwards
    Ádám Kettinger
    MD3
    Endre Pech
    Daniel Jennings
    Cameron Sampson
    Pratik Mukherjee
    Geoffrey Clarion
    Nate
    Adrian Posor
    Darren Duncan
    Russ Creech
    Jeremy Reed
    Derek Davis
    Eric Webster
    Steven Sartore
    David Johnston
    J. King
    Michael Barton
    Christopher Barron
    James Ramsey
    Drew Hart
    Justin Jermyn
    Mr T
    Andrew Mann
    Jeremiah Johnson
    Peter Mertz
    Isaac Suttell
    Devon Rosenthal
    Oliver Flanagan
    Bleys Goodson
    Darryl J Lyle
    Robert Walter
    Bruce B
    Ismael Montecel
    Simon Oliphant
    Mirik Gogri
    Mark Daniel Cohen
    Brandon Lattin
    Nickolas Andrew Freeman
    Shane Calimlim
    Tybie Fitzhugh
    Robert Ilardi
    Eric Kiebler
    Craig Stonaha
    Martin Skans
    Michael Conroy
    Graydon Goss
    Frederic Simon
    Tonyface
    John Robinson
    A G
    Kevin Lee
    Adrian Hatch
    Yurii Konovaliuk
    John Funai
    Cass Costello
    Tristan Deloche
    Bradley Jenkins
    Kyle Hofer
    Daniel Stříbrný
    Luaan
    AlecZero
    Vlad Shipulin
    Cody
    Malte Ubl
    King Zeckendorff
    Nick Virtue
    Scott Gossett
    Dan Warren
    Patrick Sutton
    John Griffith
    Daniel Lyons
    DFaulk
    GrowingViolet
    Kevin Warne
    Andreas Nautsch
    Brandon labonte

КОМЕНТАРІ • 7 тис.

  • @dustgalaktika9573
    @dustgalaktika9573 2 роки тому +15224

    Electron spin explained: Imagine a ball that is rotating, except it's not a ball and it's not rotating.

  • @fragglet
    @fragglet Рік тому +2159

    Finally an explanation of why you have to rotate USB plugs twice before they'll go in!

    • @SantiagoItzcoatl
      @SantiagoItzcoatl Рік тому +70

      sounds like a joke, but it is actually true!

    • @bad-bunnyblogger8171
      @bad-bunnyblogger8171 Рік тому +75

      @@SantiagoItzcoatl Because we're not conscious of it's position. Double slit experiment or Schrödinger's cat. Once you look and become conscious of it's position only then is it 100% until then it stays 50/50...Perhaps?

    • @Skiddla
      @Skiddla Рік тому +8

      brilliant

    • @russhamilton3800
      @russhamilton3800 Рік тому +5

      This is freakishly true!

    • @mikeroberts9299
      @mikeroberts9299 Рік тому +15

      @@bad-bunnyblogger8171 I've always hated the Schrodingers cat thing but it might be true in this case. Got me racking my brain on this one. Now plugging a USB in will never be the same.

  • @andreyleonel255
    @andreyleonel255 Рік тому +1131

    Basically, the Electron doesn't have Angular Momentum because it's spinning. It has Angular Momentum because yes.
    It just checked "yes" in the Angular Momentum option.

    • @tintweezl
      @tintweezl Рік тому +92

      The electron has the inherent property of angular momentum but it's not spinning. Spin describes an effect produced but not a physical cause, an innate cause. It's beautiful man.

    • @JohnSmendrovac
      @JohnSmendrovac Рік тому +4

      Absolutely incorrect

    • @andreyleonel255
      @andreyleonel255 Рік тому +9

      @@tintweezl
      It's just like something being wet without ever having contact with any sort of liquid?

    • @andreyleonel255
      @andreyleonel255 Рік тому +5

      @@JohnSmendrovac
      Well, that does not surprises me...

    • @marshallsweatherhiking1820
      @marshallsweatherhiking1820 Рік тому +23

      For something to spin in the classical sense it has to consist of more than one particle. You need two points to measure an angle. You can tell if a ball is spinning because you feel the friction when you touch it. You can even stop it from spinning by cancelling out its angular momentum. But friction is a macroscopic effect that requires millions of atoms bound together. Because a particle is the smallest division possible there is no actual surface or friction. I think the only analogy would be to have another anti-particle with exact opposite “spin” collide. In the quantum world that just annihilates both particles though. Without spin they can’t even exist.

  • @Richinnameonly
    @Richinnameonly Рік тому +175

    I feel like a good analogy of spin 1/2 is a mobius strip. The first time around you end up on the other side but go around again and you get to the beginning.

  • @Activated_Complex
    @Activated_Complex 2 роки тому +2622

    Physics: “For that to make sense…”
    Quantum Mechanics: “I’m gonna stop you right there.”

    • @wat2206
      @wat2206 2 роки тому +17

      lol

    • @addyyyyg
      @addyyyyg 2 роки тому +7

      *hold my beer*

    • @andreerfabbro
      @andreerfabbro 2 роки тому +42

      I’m gonna stop you but as soon as I’ll do it I won’t know where

    • @blinded6502
      @blinded6502 2 роки тому +5

      @@hyperduality2838 lol

    • @trangvo5015
      @trangvo5015 2 роки тому +1

      @@hyperduality2838 lmao

  • @Zeero3846
    @Zeero3846 2 роки тому +531

    7:46 Physicists were excited, but only in discrete amounts, probably.

    • @aaronreid8375
      @aaronreid8375 2 роки тому +49

      Continuous excitement can be hazardous to your health

    • @solus5317
      @solus5317 2 роки тому +20

      Underrated Comment

    • @Soupy_loopy
      @Soupy_loopy 2 роки тому +16

      No doubt. I've definitely observed excitement jump from one quantum level to another spontaneously

    • @Denverian
      @Denverian 2 роки тому +9

      they are excited and grounded at the same time. Super!

    • @keirfarnum6811
      @keirfarnum6811 2 роки тому +6

      In specific quanta perhaps?

  • @philip5330
    @philip5330 2 роки тому +450

    I am living proof of my own quantum theory which states that it's possible to both love quantum mechanics, and hate quantum mechanics at the same time.

    • @whoprofits2661
      @whoprofits2661 Рік тому +22

      I've collapsed into "I hate QM but admit its results" state.

    • @haraldjorch708
      @haraldjorch708 Рік тому +5

      @@whoprofits2661 by the action of which observer?

    • @whoprofits2661
      @whoprofits2661 Рік тому +8

      @@haraldjorch708 Why, myself of course

    • @coloradolove7957
      @coloradolove7957 Рік тому +10

      Until they print your obituary stating that you loved it, collapsing the wave function.

    • @Zyo117
      @Zyo117 Рік тому +7

      So you live in a state of both hate and love at the same time until such time as you take a measurement? 😂

  • @FabianRoling
    @FabianRoling 6 місяців тому +15

    I went really fast from "this seems impossible" to "of course this happens" in the mug/cube/sphere part. Great visualisation!

  • @blinded6502
    @blinded6502 2 роки тому +634

    "Electrons are spinning, but for legal reasons, I have to deny that"

    • @solapowsj25
      @solapowsj25 2 роки тому +11

      Precession to be precise.

    • @peterparker9286
      @peterparker9286 2 роки тому +1

      Good ONE

    • @PrinceWesterburg
      @PrinceWesterburg 2 роки тому +6

      At a pub quiz night, one question was "What is the last word in the Bible?" and my mate, who went to Bible class, immediately said "Coincidental." XD

    • @roncicotte
      @roncicotte 2 роки тому +2

      @@PrinceWesterburg Of course he was completely wrong. Never take another person's word for anything, especially in a pub.

    • @CrimsonA1
      @CrimsonA1 2 роки тому +1

      The physical law requires that I answer "no."

  • @Familia_nepal_e_ahskanja
    @Familia_nepal_e_ahskanja 2 роки тому +787

    Spin is always explained the same way in Physics classes:
    "Imagine a charged ball spining
    But it is not a ball, has no charge and doesn't spin"

    • @SamsaraRevolves
      @SamsaraRevolves 2 роки тому +49

      Students to high school physics teacher: "How does charge work?"
      Teacher: *head explodes*

    • @makisekurisu4674
      @makisekurisu4674 2 роки тому +17

      The isn't really and intuitive way to describe this weird thing, to describe it you'd need a weird explanation like this!

    • @gardenhead92
      @gardenhead92 2 роки тому +16

      I think it *does* have charge, at least...

    • @stopthephilosophicalzombie9017
      @stopthephilosophicalzombie9017 2 роки тому +5

      I thought electrons were negatively charged.

    • @Familia_nepal_e_ahskanja
      @Familia_nepal_e_ahskanja 2 роки тому +42

      @Kelvin Yes, that comes right after the professor gives up on trying to make sense of what spin intuetively is and go for the shut up and calculate approach that he'll adopt for the rest of the course..

  • @RuslanLomaka
    @RuslanLomaka Рік тому +242

    I didn't understand everything, but I feel like I'm becoming smarter watching this kind of content. The visualisation of untangable cube was mind-blowing. And the ball exceptionally insane.... Thank you for your great efforts

    • @cristianjuarez1086
      @cristianjuarez1086 Рік тому +6

      I dont want to be that guy but being smarter is not just knowing things

    • @RuslanLomaka
      @RuslanLomaka Рік тому +4

      @@cristianjuarez1086 you are right

    • @coscinaippogrifo
      @coscinaippogrifo Рік тому +9

      @@cristianjuarez1086 Well, in a sense it is a component of it: you can build stuff using the bricks of your acquired knowledge. I think of knowledge as having more tools at the disposal of my brain to build more complex things than my brain would be able to, without. Knowledge is also probably the only thing at your disposal to change a genetically fixed feature (intelligence).

    • @kuribojim3916
      @kuribojim3916 Рік тому +12

      @@cristianjuarez1086Well, you’re being “that guy”. I don’t think the OP was implying that just knowing facts is all there is to “smartness”.

    • @cristianjuarez1086
      @cristianjuarez1086 Рік тому

      @kuribojim3916 nah, data is not the same as information, and having information but being dumb to use it is just an example of how you're wrong

  • @codyheiner3636
    @codyheiner3636 Рік тому +31

    9:30 for those wondering how this is possible, the trick is that any specific ribbon goes up on one turn, and down on the next. Thus, its orientation with respect to the cube alternates, and so it undoes its previous twist.
    Same idea with the arm holding a cup.

  • @wannabecriminalman
    @wannabecriminalman 2 роки тому +1262

    I really appreciate the determination to not dumb down the subject matter, even though most people (including myself) won’t really get it. There are dozens of channels that will explain quantum mechanics with flawed analogies and misleading visual aids for the sake of accessibility, but the real meat of quantum mechanics isn’t so easily digestible.
    Quantum mechanics is a confusing and difficult subject, and to present it otherwise is more misleading than helpful.

    • @iamtheiconoclast3
      @iamtheiconoclast3 2 роки тому +17

      Totally agree. Which is probably why this is the first time I really started to feel like I was able to grasp it.

    • @khalaq2
      @khalaq2 2 роки тому +31

      Quite. "Dumbing down" an explanation most often necessitates leaving out important details. Doing that leaves unanswered questions, thus making the explanation less intelligible. It is natural for human beings to be curious, but not everything is within our ability to comprehend.

    • @TopCityGear
      @TopCityGear 2 роки тому

      @@iamtheiconoclast3 ppupp III I I lllllljjjjjli

    • @plumbusman
      @plumbusman 2 роки тому +6

      Give it to me straight, doc. No sugar coating!

    • @graystone2802
      @graystone2802 2 роки тому +10

      @David Bytheway electrical engineering was fantasy class? I just finished quantum II and honestly by the end of perturbation theory I was like wtf am I even learning. The professor uses quantum to do molecular modeling and even said that a lot of quantum simply is too cumbersome or incomplete to really apply with any effectiveness. If anything, quantum is the fantasy physics, at least we can use the whole electrical engineering class to do something lol

  • @bamikroket
    @bamikroket 2 роки тому +265

    That double spin example was probably the best I've seen.

  • @hermes537
    @hermes537 Рік тому +17

    The most stupendous description of anything I've ever listened to. I was lost in the first few seconds, fell asleep twice, and was able to listen to the end with my brain wonderfully confused

  • @samelis6546
    @samelis6546 Рік тому +63

    The short answer starts at 09:15. I love the video, thank you so much! The arm+mug and the ribbon diagram is the best explanation I've seen. Too bad I was stuck with teachers making us memorise numbers of spins years ago. Still thankful to my school education but this is the jam. I hope this is the way they'll teach students later. It's so much easier to understand than some random number and static diagram.

    • @suecondon1685
      @suecondon1685 Рік тому +2

      Oh wow, at that point I got it, thank you for the timestamp! I don't get anything else, but that little bit with the ribbons is amazing!

    • @civotamuaz5781
      @civotamuaz5781 Рік тому

      Dq

    • @patrickday4206
      @patrickday4206 Рік тому +1

      It's the only thing I don't like about his videos I like the simple explanation then going into the complex!

    • @mja2239
      @mja2239 Рік тому

      Teachers taught you this in school?

    • @samelis6546
      @samelis6546 Рік тому

      @@mja2239 It was a higher cert, so something similar to an extra grade after high school (hs) or pre-university. It was done at a hs and considered hs, that's why I said school.

  • @Rationalific
    @Rationalific 2 роки тому +446

    9:59 - Matt: "So, think of electrons as being connected to all other points in the universe by invisible..."
    Me: "I got it! I got it! Strings! Like the theory!"
    Matt: "...strands."

    • @atimholt
      @atimholt 2 роки тому +52

      Probably why they chose a different word.

    • @AxionSmurf
      @AxionSmurf 2 роки тому +3

      Same. lol

    • @helloworld610
      @helloworld610 2 роки тому +29

      Nothing in nature is that easy...There's always a 'huh' moment after every 'aha' one... :)

    • @airnidzo
      @airnidzo 2 роки тому +3

      Funny :)

    • @eltodesukane
      @eltodesukane 2 роки тому +2

      see: the strand conjecture (strands with rational tangles, not strings)

  • @VishwaJay
    @VishwaJay 2 роки тому +885

    "I think I can safely say that nobody understands quantum mechanics."
    . -Richard Feynman, Nobel-prize-winning 20th Century quantum physicist

    • @divinegon4671
      @divinegon4671 2 роки тому +11

      Hahaha Omg that’s SOOO ironic!!

    • @perlindholm4129
      @perlindholm4129 2 роки тому +9

      Its self learned machine learning - My guess.

    • @mknone40
      @mknone40 2 роки тому +6

      Yes, who died 33 years ago. You example is stupid. This way you can also say that electric motor or generator or radio cannot exist because Christian Oersted could not see all this available.

    • @tmoore121
      @tmoore121 2 роки тому +66

      @@mknone40 Feynman was right then and the statement still stands. We understand a lot about quantum mechanics but no one understands how the things we "know" to be true of quantum mechanics align with what we know to be true about general relativity. If anyone truly understood the physics underlying the quantum work then we would already have a theory of everything. The fact that physicists cannot reconcile quantum mechanics with general relativity is itself proof that we do not understand how either work very well.

    • @scottwhitman9868
      @scottwhitman9868 2 роки тому +26

      @@tmoore121 its more that quantan mechanics is so alien to our thinking that no one truly understands it on an intuitive level. Its sort of like higher dimensions, we can solve problems and do math but we will never have a geometric intuition about it like in 2 or 3 dimensions.

  • @mrboombastic_69420
    @mrboombastic_69420 Рік тому +15

    Props to this guy for teaching _without blinking_

    • @WyndhamLyonsRealty
      @WyndhamLyonsRealty Рік тому +8

      He only blinks when you are not observing him. Until then he is both blinking and not blinking simultaneously.

    • @JR-White
      @JR-White 17 годин тому

      He blinks at about 7:47

  • @northascrowsfly
    @northascrowsfly Рік тому +59

    This was properly painful, and I want to suffer even more from this in future episodes. 🧠

    • @michaeltodd6731
      @michaeltodd6731 9 місяців тому +7

      Pain is a catalyst, necessary for perpetuating the outcome that is growth :)

    • @BrexitMapMan
      @BrexitMapMan 4 місяці тому

      I got 'entanglement' in my brain cells listtening to this 🤣

  • @TheKqkk
    @TheKqkk 2 роки тому +1463

    i perfectly understood everything until the first sentence

    • @ronnielaw9318
      @ronnielaw9318 2 роки тому +54

      I understood the whole thing, he's just reading from the Star Trek technobabble bible that Scotty and LaForge use.
      For example, if you were paying attention, his condition is the result of a horrible transporter accident. His quantum spin function was thrown out of phase by 360 degrees during transport by the phase inducers and now he's Australian.

    • @Jay-ho9io
      @Jay-ho9io 2 роки тому +14

      You and I are in perfect agreement with each other. 👍🏽😶🤦🏽‍♂️🤣

    • @slkjvlkfsvnlsdfhgdght5447
      @slkjvlkfsvnlsdfhgdght5447 2 роки тому +5

      @Walter Morris why such a specific number?

    • @dirkbastardrelief
      @dirkbastardrelief 2 роки тому +8

      The more information you learn about a subject, the less certain you can be that it’s true. That’s the Donald exclusion principle.

    • @mvsk9956
      @mvsk9956 2 роки тому +2

      Great... I'll join you to understand everything... Atleast till the 1st sentence...

  • @chrism3562
    @chrism3562 2 роки тому +537

    So USB type A connections are Spinors, gotcha.

    • @aidanklobuchar1798
      @aidanklobuchar1798 2 роки тому +20

      No, the joke is that they're spin 1 particles. You try it, flip it, try it, and then flip it again.

    • @selforganisation
      @selforganisation 2 роки тому +38

      No. Rather, they are in quantum superposition of two states (up or down) and they collapse to one when you measure it (try to plug in).

    • @Ethan_Simon
      @Ethan_Simon 2 роки тому +23

      @@selforganisation Unfortunately the always seem to collapse to the undesired state.

    • @harmsc12
      @harmsc12 2 роки тому +11

      @@Ethan_Simon Am I the only one who looks at the plug and socket before trying to connect them?

    • @Ethan_Simon
      @Ethan_Simon 2 роки тому +2

      @@harmsc12 I don't know. I just have the habit of plugging it in ASAP. I could rationalize and say that it takes less time to fail and try again than to look and see which was is correct before plugging it in.

  • @tenormdness
    @tenormdness 2 роки тому +18

    Sometimes I think this channel needs a channel to explain this channel.

  • @gnznroses
    @gnznroses Рік тому +6

    The only thing spinning is my head.

  • @natsune09
    @natsune09 2 роки тому +348

    Slow clap for whoever made the spinning electron visuals.

    • @dan7291able
      @dan7291able 2 роки тому +25

      it just blew my mind... finally an actual visual that can help explain why its NOT actually spinning lmao

    • @DanielW607
      @DanielW607 2 роки тому +1

      @@dan7291able time stamp?

    • @stansburygreg
      @stansburygreg 2 роки тому +3

      Exactly what I was thinking. That took some time and knowledge regardless of how strong their ability. Also, really cool visual explanation!

    • @dan7291able
      @dan7291able 2 роки тому +3

      @@DanielW607 9:49

    • @TheARN44
      @TheARN44 2 роки тому +2

      @@MrFedX quaternions are neat

  • @crystaldazz
    @crystaldazz 2 роки тому +471

    PBS: "Sounds reasonable, right?"
    Me, knowing nothing about anything: "....n.. y.... ye.... Yes? ...! ?"

    • @digitalmouse3314
      @digitalmouse3314 2 роки тому +8

      I sort of understanding it from going lighting and shaders in games but yeah even though I use the calculations I have trouble wrapping my head around it. Oh, that's the algorithm for refraction ok if you say so seems to work lol.

    • @innocentbystander3317
      @innocentbystander3317 2 роки тому +1

      Sheldon: I don't know why it works this way, but this way is the only way it works...
      Leonard: I can confirm this, it does work for some reason.
      Howard: Well, ok, whatever you say guys. Ill just do it that way then.
      Raj: ...
      Penny: Still? Omg, I need a drink...

    • @sathanimations1457
      @sathanimations1457 2 роки тому

      you know enough to know what you don't know. That's something you know about :D

    • @atomictraveller
      @atomictraveller 2 роки тому

      dang, one day maybe we can learn epistemology, and we finally can stop knowing anything
      except then we'd be thinking and the masons would have to tell everyone you're a meth addict

  • @Xenosophia
    @Xenosophia 2 роки тому +5

    Unapologetically obscure content presented as lay-accessible stories. Love it.

  • @stevelt4242
    @stevelt4242 2 роки тому +4

    Intellectually challenging but wonderfully well presented and fascinating video which has given me my first real glimpse into what spinors are about. Please let's have lots more of these.

  • @ak14serko44
    @ak14serko44 2 роки тому +299

    This man was my professor in ASTRONOMY 101 at Lehman College,New York.
    He's really good!

    • @harishthethird
      @harishthethird 2 роки тому +10

      Good for you😌👍🏼

    • @visheshreddy4293
      @visheshreddy4293 2 роки тому +28

      It must be really fun listening to this dude while also understanding every word he says!

    • @harishthethird
      @harishthethird 2 роки тому +5

      @@visheshreddy4293 xD ikr

    • @RichardAlsenz
      @RichardAlsenz 2 роки тому

      He is also wrong:?)

    • @matthewpeterson4128
      @matthewpeterson4128 2 роки тому +1

      @@RichardAlsenz just for my own understanding, what parts wrong?

  • @morphman86
    @morphman86 2 роки тому +93

    I keep thinking "Yeah, I understand the fundamentals, you know, the basic stuff" and then PBS tosses me a new video to watch and I realize I know practically nothing.

    • @standardranchstash221
      @standardranchstash221 2 роки тому +2

      I thought it was just me.

    • @brokenlegs8431
      @brokenlegs8431 2 роки тому +2

      Dunning and Kruger, when I was young I learned about them and from them I learned to always assume myself incompetent

    • @twentylush
      @twentylush Рік тому +1

      i feel like the QM dunning kruger graph is just an exponential decay approaching 0 on the confidence scale

  • @digitalfiction
    @digitalfiction 8 місяців тому +5

    Infinite knots within the universe, perfectly woven.

  • @Cr4shOverride
    @Cr4shOverride 5 місяців тому +3

    this cup practical example is quite cool.
    i noticed while the mug towards itself stays spinning in the same direction. but you add an aditional angle as well with the 2nd rotation to free yourself.
    so technically its the principle of changing phase in a wavelength with same amplitude height. and overlay them.
    when you untwist the 2nd wave starts. but not before that point in time.
    we see this as proof when the cup shows its opening so we can see its inside bottom towards us 09:28. while at start the opening was not seen to the viewer.
    meaning it gives also proof that electrones should understood in 3 dimensions to grasp this better. spin can be applied not only in a specific direction horizontally understood. but also vertical and diagonal. depending on how you tilt its axis. an EM field can influence and change angles that way. this explains the magnet experiment and change of direction as an effect, quite well.
    in this sense i would say you can understand spinning in left or right direction as one of the poles.
    while spinning that happens towards a change of axis. as the other of the poles for North and Southpole principle.
    i wonder how this would change the view for this chessboard design ball's spin. cause its only spinning in one direction horizontically. what if we add also axis tilt spinning as well.

  • @serenity1123
    @serenity1123 2 роки тому +500

    brain: don't watch it ur not gonna understand it
    me: *watches anyways*

    • @Nippleless_Cage
      @Nippleless_Cage 2 роки тому +32

      brain: i told you so

    • @tres-2b299
      @tres-2b299 2 роки тому +35

      You: misses 15 seconds of the video
      Rest of the video: X Æ A-12那是

    • @theobolt250
      @theobolt250 2 роки тому

      Formulated like that: watch it ur gonna understand it? 😄

    • @davidlee50
      @davidlee50 2 роки тому

      I'll bet he had you reach out to a star and hold it....as he was speaking.

    • @benschebella673
      @benschebella673 2 роки тому

      Every damn time.

  • @Zeero3846
    @Zeero3846 2 роки тому +106

    When he says, "Sounds reasonable!" We're like, "Yeah, totally!"

    • @cosmic_gate476
      @cosmic_gate476 2 роки тому +1

      Lmao

    • @gok46
      @gok46 2 роки тому +3

      Yup, don't understand why it's reasonable. Why would having a dipole moment allow split into three levels only?? :S

    • @alexandermartin1837
      @alexandermartin1837 2 роки тому

      I recommend you the exoplanets channel

  • @thierryfaquet7405
    @thierryfaquet7405 Рік тому +1

    Electron interview :
    -Hello, do you spin ?
    -No
    -Ok, you don’t spin then
    -No, but I have spin
    ???

  • @ejejej9200
    @ejejej9200 2 роки тому +9

    I appreciate this channel so much. Thank you for all of the hard work and wonderful explanations!

  • @aqueento
    @aqueento 2 роки тому +444

    Bosons: " Hey fermions wanna come to the party?"
    Fermions: "How about no."

    • @chaosordeal294
      @chaosordeal294 2 роки тому +13

      Fermions: "La la la la la - I can't hear you."

    • @nikoglucina4173
      @nikoglucina4173 2 роки тому +6

      @Armenias Thunk then why do they smell so bad?

    • @shutupimlearning
      @shutupimlearning 2 роки тому +6

      Cooper Pairs: "Am I cool enough to come?"

    • @hartunstart
      @hartunstart 2 роки тому +1

      @@nikoglucina4173 No way, nuclear bomb is a lie (in this context).

    • @nikoglucina4173
      @nikoglucina4173 2 роки тому +1

      @@hartunstart damn. I'm typing on a lie right now 🤥

  • @MrWildbill
    @MrWildbill 2 роки тому +221

    It's not the electron spinning now, it is my head.

    • @helloworld610
      @helloworld610 2 роки тому +8

      Technically your head also has electrons..

    • @PhilHibbs
      @PhilHibbs 2 роки тому +4

      …and yet your head had no classical rotation. Hmmm…

    • @glarynth
      @glarynth 2 роки тому +2

      Better spin it again. Always watch Spacetime in pairs.

    • @MrWildbill
      @MrWildbill 2 роки тому +1

      @@helloworld610 -- true but as he pointed out, they are not spinning :)

    • @innocentbystander3317
      @innocentbystander3317 2 роки тому +2

      That's called conservation of momentum, MrWildbill47.
      😂🤣😂

  • @bams56756
    @bams56756 Рік тому

    that's amazing, and it highlights one of the most fundamental parts of all of science, that we are never observing the concepts in question, but their interactions with our sensors and each other

  • @thephilosopher7173
    @thephilosopher7173 Рік тому +2

    I'm glad this was broken down by showing the *_first principles_* of how it was discovered through the experiments. Tons of other videos don't even bother doing that which makes it way more confusing than it needs to be.

  • @xvpower
    @xvpower 2 роки тому +108

    Man whoever does the 3D graphics and animations for this channel is amazing.

    • @rheticus5198
      @rheticus5198 2 роки тому +6

      Always impressive. The animation at 9:30 is fantastic. This is a really nice description of spin.

    • @karkunow
      @karkunow 2 роки тому +4

      @@rheticus5198 i guess that is a common known animation from wikipedia.

    • @JasonHise64
      @JasonHise64 2 роки тому +23

      I donated the Wikipedia animations to the public domain a few years back. Was super cool to find them featured here!

    • @simonmultiverse6349
      @simonmultiverse6349 2 роки тому +3

      @@rheticus5198 I originally saw that spin video with lots of tendrils, which kept moving and didn't get tied in knots, in www.quantamagazine.org/ at least a couple of years ago. I haven't been able to find it again, but maybe I should look again.

    • @Ottmar555
      @Ottmar555 2 роки тому +3

      @@JasonHise64 Loved the article you shared on twitter about this topic. Is there more recent work you know of?

  • @swissaroo
    @swissaroo 2 роки тому +542

    Halfway through this excellent presentation, my head felt like it was spinning, except it was not otherwise I would have entangled myself in knots unless I remembered to rotate completely around twice. Time for a Baileys on ice!

    • @English_Lessons_Pre-Int_Interm
      @English_Lessons_Pre-Int_Interm 2 роки тому +14

      I need to vapourize some herbs too, because I have stomach problems.

    • @RichardAlsenz
      @RichardAlsenz 2 роки тому +4

      You do realize the spinning continued and will for a long time:?) We are all entwined in Gauss's Gordian Space Knot. As long as we believe space is measurable we are on a roll. Gauss warned us.

    • @julianshepherd2038
      @julianshepherd2038 2 роки тому +7

      @@RichardAlsenz that's not really helping the nausea

    • @RichardAlsenz
      @RichardAlsenz 2 роки тому +3

      @@julianshepherd2038 Just - stop and take a deep breath, then realize indefinite means to not definitely know.
      To role around once does not give one the ability to define infinitely know.

    • @RichardAlsenz
      @RichardAlsenz 2 роки тому +2

      In reality, the start of its spin can not be known precisely until one of its revolutions has occurred and then only within approximations. Heisenberg can be certain of that:?) So, blame him for add-nausea.

  • @miki890098
    @miki890098 2 місяці тому +1

    This is the first time I see the experiment of the iron rod rotating when exposed to a magnetic field, and it's the first time I finally understand what brought physicists to call it spin. Hours and hours of videos, and what this "angular momentum" they were talking about has been made apparent to me only now.

  • @vishnuk8782
    @vishnuk8782 Рік тому +5

    Excellent stuff please keep posting content like this👌

  • @lordemed1
    @lordemed1 2 роки тому +57

    Whenever i think I'm smart I watch Spacetime...brings me right down to earth....faster than the speed of light

    • @marksmadhousemetaphysicalm2938
      @marksmadhousemetaphysicalm2938 2 роки тому +1

      Absolutely 😁

    • @i-never-look-at-replies-lol
      @i-never-look-at-replies-lol 2 роки тому +3

      Someone in the comments: "technically if you returned to Earth at the speed of light your energy would destroy the entire planet on impact even as a tiny human"

    • @tusharkantimalakar4848
      @tusharkantimalakar4848 2 роки тому

      Also energy that you will require to do that will only turn you into photons or disintegrate you into energy

    • @marksmadhousemetaphysicalm2938
      @marksmadhousemetaphysicalm2938 2 роки тому

      If you could travel at the speed of light...you couldn't...because your mass would be infinite...😁

    • @-_deploy_-
      @-_deploy_- 11 місяців тому +1

      technically if you returned to Earth at the speed of light your energy would destroy the entire planet on impact even as a tiny human

  • @paulperkins1615
    @paulperkins1615 2 роки тому +190

    At least I understand why physicists say "the electron has spin" and not "the electron spins". Or do I?

    • @phxcppdvlazi
      @phxcppdvlazi 2 роки тому +34

      "Hey, vsauce, Michael here!"

    • @KB4QAA
      @KB4QAA 2 роки тому +15

      To paraphrase Drew Carey: "Quantum Physics, where the names are made up and the forces aren't real."

    • @michaelholloway8
      @michaelholloway8 2 роки тому +1

      I hear that.

    • @vacuumdiagrams652
      @vacuumdiagrams652 2 роки тому +13

      The electron "spins" suggests that it might stop spinning, or that it didn't have to spin. But spin is _intrinsic_ to the electron, can't be removed from it. So 'has spin' is actually a rather strong statement: it's a property of the electron as much as mass or electric charge.

    • @arctic_haze
      @arctic_haze 2 роки тому

      I think you got it!

  • @bumpty9830
    @bumpty9830 Рік тому +10

    The Ohanian idea connecting spin to the "Dirac field" sounds enticingly intuitive for such an unintuitive realm. Would love to see an episode exploring that further!

    • @MattMcIrvin
      @MattMcIrvin Рік тому +2

      I've been evangelizing for that for a while--Belinfante figured it out in the 1930s. Treat the Dirac (or Maxwell) field *as a field*, and you can derive an energy-momentum density corresponding to the spin that is actually swirling around in space. It just doesn't correspond to the moving matter in a spinning ball.

    • @bumpty9830
      @bumpty9830 Рік тому

      That's interetsing, @@MattMcIrvin. Since it works for the Maxwell Field, too, that would probably make a better SpaceTime video (to separate it from the subject of spinors).

    • @MattMcIrvin
      @MattMcIrvin Рік тому +1

      (I think there is even a way to "derive" it nonrelativistically from the Schrödinger equation, using a slightly shady trick invented by Richard Feynman. But that is another story I want to write up in more detail someday.)

    • @bumpty9830
      @bumpty9830 Рік тому

      Is it the Pauli spinor version of the Schroedinger equation you're referring to, @@MattMcIrvin ?

    • @MattMcIrvin
      @MattMcIrvin Рік тому +2

      @@bumpty9830 Yes! Consider it as a field, then canonically derive the space-time symmetrized stress-energy tensor, but interpreting the squared gradient as (grad dot sigma) squared. I *think* you get out Belinfante's spin momentum density in the nonrelativistic limit.
      Feynman used essentially the same trick to derive g=2 from the gauge substitution. At least according to J. J. Sakurai, but Sakurai never gave a reference. I assume Feynman wrote it on a napkin or something.

  • @beansnrice321
    @beansnrice321 Рік тому +3

    One thing about this model stands out to me. To me, the ribbon-like structure of the connections implies that the electron itself is not point like but more like a small bar magnet. Basically a infinitesimally small dash or hyphen, spinning in the fabric of the electro-magnetic field.

  • @theecat3689
    @theecat3689 2 роки тому +248

    im 12mins in and this explained a lot more about spinors and angular position to me than 2 takes of introduction to nuclear magnetic resonance. much thanks!

    • @fattyMcGee97
      @fattyMcGee97 2 роки тому +12

      What I love about this show is that it takes university level subjects and makes them digestible to anyone with a low level physics background. It’s wonderful

    • @theecat3689
      @theecat3689 2 роки тому +5

      @@fattyMcGee97 ill take your word for it (or ill find out as I watch more of their videos)! im not really a follower of this channel and my background is in plants and biochemistry... quantum physics just flies over my head 😭 even tho it was discussed in my university classes and its in the text books, its so difficult to digest :') very thankful for channels like this that help by providing different narratives or better visualizations
      (sorry for semi unloading there was a deleted comment about how i must be lying about not understanding something like this because it just takes 2 pages in a physics book and how could i not understand it after taking "complex" classes 🤣😭)

    • @SomethingImpromptu
      @SomethingImpromptu 2 роки тому +7

      Yeah I’ve listened to Roger Penrose talks on spinors & they were pretty much incomprehensible for a layperson. This was much more helpful.

    • @innocentbystander3317
      @innocentbystander3317 2 роки тому +1

      I knew a spinner once, and she was pretty cool. Ended up learning nothing about spin though, so figured it was a matter of time before this video was made.

    • @JivanPal
      @JivanPal 2 роки тому

      @Thee Cat, nuclear magnetic resonance does not really have anything to do with spin angular momentum, so I'm not sure if/why you expect a course on NMR to delve into the details of spin.

  • @GetterRay
    @GetterRay 2 роки тому +95

    I love it when Matt breaks the rules of causality and goes so fast that he becomes Gabe.

    • @Joyexer
      @Joyexer 2 роки тому +2

      The biggest of Gabes ~ Heromarine.

    • @kwisin1337
      @kwisin1337 2 роки тому +9

      I really miss Gabe. His speed was only tied by his sheer pleasure to explain. o7 Gabe, long live your youtube presents.

    • @badnamebro
      @badnamebro 2 роки тому

      Naw Gabe sucks he's just jealous space time became a thing

  • @gbpferrao
    @gbpferrao Рік тому +2

    Spin is a way to describe the continuous rotation of a point in space without needing to rip the space structure and then rotate, just geometrically move it in a clever way so that everything keeps connected, and in this case something rotated 360 degrees and and does not need to come back... it can keep on going, but two full turns are needed to undo the twist that a full rotation does

  • @extremelydave
    @extremelydave 2 роки тому +1

    If my mind wasn't totally blown up by this video, I could say "wooooooooooow". Glad to see videos like this out there for us to see.

  • @joaohmendonca
    @joaohmendonca 2 роки тому +382

    Does that mean that USB connectors are spinors?

    • @JasonHise64
      @JasonHise64 2 роки тому +93

      But that leads to the pathological result that USB-C connectors are bosons!

    • @KekusMagnus
      @KekusMagnus 2 роки тому +18

      based

    • @truthisthenewhatespeech9572
      @truthisthenewhatespeech9572 2 роки тому +1

      @@KekusMagnus 🤣🤣🤣

    • @Vasharan
      @Vasharan 2 роки тому +6

      Except the way to orient a USB-A cable is typically to rotate it left-right-left, so I think it needs its own special class of mathematics.

    • @paulmichaelfreedman8334
      @paulmichaelfreedman8334 2 роки тому +8

      @@JasonHise64 Actually its the other way round, USB C is spin 1/2 = fermion, and the others are spin 1 = boson

  • @27GX76R
    @27GX76R 2 роки тому +465

    I watch these videos when I can't sleep. The journeys that these subjects takes me to is so comforting. We are so lucky to live in a time where we can begin to understand our reality. It feels like being a billionaire

    • @Beamshipcaptain
      @Beamshipcaptain 2 роки тому +14

      Indeed yes, Sir! We are lucky to be us, at this time in Earth-history.

    • @eden4949
      @eden4949 2 роки тому +3

      Same here. It's became a routine of some sort..

    • @ConnerOfRS
      @ConnerOfRS 2 роки тому +19

      It feels like learning the lore of a mysterious game in alpha that the community hasn't quite figured out yet.

    • @xyzzyi5315
      @xyzzyi5315 2 роки тому +4

      Except with less personal space travel, and a lot, lot less money.

    • @gbennett58
      @gbennett58 2 роки тому +1

      I am sure it is re-assuring to assume that at least someone somewhere is beginning to understand our reality. I'm still in the dark.

  • @sachiel197
    @sachiel197 Рік тому +1

    9:43 oh my goodness this is what I've been missing!
    that's a mental image I can work with

  • @Dr.MikeGranato
    @Dr.MikeGranato Рік тому +30

    My next question would be - if electrons don’t “spin” in the conventional sense like we’ve been taught, then how does this quantum spin/spinner with multiple directionality reconcile with the concepts of “up spin” and “down spin” directionality?

    • @MattMcIrvin
      @MattMcIrvin Рік тому +18

      It's still the direction of the angular momentum vector. This may not correspond to a classical rotating object but it IS angular momentum, just like that of a spinning ball--angular momentum is only conserved if you include it--and it exhibits phenomena like precession.
      It's even possible to express it in terms of a circulating energy/momentum density that is a function of the electron field--this is something Belinfante figured out in the 1930s. It's just that the momentum circulates around the borders of the particle's wave packet, rather than in some sense within the particle.

    • @Dr.MikeGranato
      @Dr.MikeGranato Рік тому +3

      @@MattMcIrvin Makes more sense now, thank you for your insights

    • @stephen7774
      @stephen7774 Рік тому

      They do spin. Its just a trick of the intellectual elites to maintain power, status and control over the masses to insist that electrons don't spin. By creating a difficulty where none exists they preserve their air of superiority over the simpleton masses who are too stupid to understand such lofty concepts. lol.

    • @pedropina8999
      @pedropina8999 Рік тому +1

      It’s to distuinguish the tipe of polarization on the magntic field

    • @avanimajithiain6235
      @avanimajithiain6235 10 місяців тому

      Actually up spin and down spin have no classical analogue in real world..

  • @NovaSaber
    @NovaSaber 2 роки тому +631

    Everything's better with classically non-describably two-valuedness.

    • @flaparoundfpv8632
      @flaparoundfpv8632 2 роки тому +22

      Worked for Prince.

    • @matroqueta6825
      @matroqueta6825 2 роки тому +50

      You classically non-describably two-value me 'right round baby, right 'round
      Like an electron baby right 'round, right 'round

    • @rstoeckler
      @rstoeckler 2 роки тому +15

      guess it sounds better in german

    • @cineblazer
      @cineblazer 2 роки тому +13

      @@matroqueta6825 I love that the "right rounds" come in pairs of two since it's describing a fermion lol.

    • @kwisin1337
      @kwisin1337 2 роки тому +2

      What about fouredvalveness. Automotive got that down pat...

  • @ayane_m
    @ayane_m 2 роки тому +616

    Gabe! Haven't seen him in a while!

    • @Agrantar
      @Agrantar 2 роки тому +54

      I know right? It's good to see him, he was great in his own right (Matt obviously is great as well)

    • @MadCowOnFire
      @MadCowOnFire 2 роки тому +30

      Right! I saw him and actually pointed at the screen. It's been to long.

    • @ashishl5805
      @ashishl5805 2 роки тому +10

      Exactly what I thought!!!

    • @whatfireflies
      @whatfireflies 2 роки тому +42

      Gabe taught me do much on this channel! Thank you Gabe

    • @GameCyborgCh
      @GameCyborgCh 2 роки тому +32

      quantum tunneled from the past to the present to make a guest appearance in this video

  • @jge123
    @jge123 2 роки тому +11

    Interesting how the properties of things seem to be able to exist on their own even though to make sense to us they have to be inextricably linked to other properties of such things, it’s like nature actually allows for the smile of the cheshire cat to detache from the cat itself and exist on its own, this makes for the possibilities of manipulation of things quite literally mind-blowing, it’s like very bizarre fantasia-like worlds can actually become true one day. 7:10

  • @akenordin8812
    @akenordin8812 2 роки тому +2

    I suppose the "Noter theorem" referenced in the subtitles at about 10:33 actually is Emmy Noether's first theorem about conservation of quantities arising from symmetry properties.

  • @DocKobryn
    @DocKobryn 2 роки тому +233

    Thank you so much for this video. I've been a physics professor for years but had never seen spinors explained as you do in the video with the bands connecting the electrons to the space-time fabric. I just kind of accepted it as a weird QM feature that was mathematically accounted for by the imaginary nature of the phase. I had figured there was no physical analog for it at all. So your tea cup analogy animated graphics were an eye opener for me.
    The graphics were still hard for me to see until I slowed down the video and created screen shots at 0, 360, and 720 degrees of rotation. wow. just wow. Just a great way to visually see how this works.

    • @flamealchemy7964
      @flamealchemy7964 2 роки тому +1

      It's an OK theory. How anything can be derived from having no real images of electrons or photons is more interesting than the theory itself... My profile picture you see is a real photon, photons assemble into a disc like structure which I also have acquired images and videos of and without recognition I am having a lot of fun with what comes of this type of research and experimentation.

    • @BboyKeny
      @BboyKeny 2 роки тому +3

      @@flamealchemy7964 But isn't that picture only possible through theories upon theories used in practice?

    • @johnboze
      @johnboze 2 роки тому

      A "spinor" is really just a few trillion EM Dipole Particles from the EM "field" caught in a condensing Vortex just short of liquification into a Bose Einstein Condensate of EM Dipole Particles that have a mass of about ~~10^(-90) to 10^(-93) kg each.
      There are about 10^(72) EM dipole Particles per cubic meter of vacuum with a total mass of 10^(-18) kg of EM dipoles in each cubic meter the vacuum in our solar system all moving at an RMS velocity of "c". THIS IS DARK MASS AND ENERGY. It is just the EM Field Dipoles.
      The EM field is a Bose Gas of Planck sized EM Dipole Particles. Already proven to be real and the fill the vacuum to form what u call the EM Field.

    • @byoshizaki1025
      @byoshizaki1025 2 роки тому +1

      Wrong. QM is a relic of 100 years of backwards metaphysical thinking. Electrons are infinitesimally thin shells with complex supercurrent surface motion which gives rise to spin. All quantum characteristics can be fully modeled classically with ZERO need of any of the nonsensical self-contradictory quantum mechanics hocus pocus bullpoo.

    • @BboyKeny
      @BboyKeny 2 роки тому +2

      @@byoshizaki1025 Is there any name or model to that theory, maybe like a drawing or something?

  • @themeatpopsicle
    @themeatpopsicle 2 роки тому +265

    The biggest issue I have with understanding physics is that certain words mean very specific things in physics that may or may not correlate with the common definition of a word

    • @tubester358
      @tubester358 2 роки тому +41

      kinda true, probably because the "common definition" of words changes according to common use lol. Science needs its definitions to be more precise so the same experiments/simulations can be repeated anywhere & get the same results, thinking like that I think the reduced ambiguity in the definitions makes it easier to build onto your understanding over time

    • @themeatpopsicle
      @themeatpopsicle 2 роки тому +12

      @@tubester358 oh indeed. It's just more difficult to understand if you don't have the glossary at hand :)

    • @SpotterVideo
      @SpotterVideo 2 роки тому +3

      Quantum Entangled Twisted Tubules:
      When we draw a sine wave on a blackboard, we are representing spatial curvature. Does a photon transfer spatial curvature from one location to another? Wrap a piece of wire around a pencil and it can produce a 3D coil of wire, much like a spring. When viewed from the side it can look like a two-dimensional sine wave. You could coil the wire with either a right-hand twist, or with a left-hand twist. Could Planck's Constant be proportional to the twist cycles. A photon with a higher frequency has more energy. (More spatial curvature). What if gluons are actually made up of these twisted tubes which become entangled with other tubes to produce quarks. (In the same way twisted electrical extension cords can become entangled.) Therefore, the gluons are actually a part of the quarks. Mesons are made up of two entangled tubes (Quarks/Gluons), while protons and neutrons would be made up of three entangled tubes. (Quarks/Gluons) The "Color Force" would be related to the XYZ coordinates (orientation) of entanglement. "Asymptotic Freedom", and "flux tubes" make sense based on this concept. Neutrinos would be made up of a twisted torus (like a twisted donut) within this model. Gravity is a result of a very small curvature imbalance within atoms. (This is why the force of gravity is so small.) Instead of attempting to explain matter as "particles", this concept attempts to explain matter more in the manner of our current understanding of the space-time curvature of gravity. If an electron has qualities of both a particle and a wave, it cannot be either one. It must be something else.

    • @maurice2572
      @maurice2572 2 роки тому +13

      That actually is true to all and every science field

    • @qwadratix
      @qwadratix 2 роки тому +10

      That's really the fault of 'common usage', not physics. I don't think there's a word used in physics that doesn't have the same use in ordinary conversation though. It's just that common use may have other meanings that are sloppy and most definitely NOT physically correct. Think of the word 'energy' that gets used in the most bizarre ways outside of physics. In physics, it's a very rigid, mathematical term with only one meaning. 'Gravity' is another one, especially when applied to people. Then there's 'weight', which gets abused all the time.
      In fact, many 'discoveries' in physics were actually a realization that people had failed to recognise that ordinary language being applied was in fact sloppy and vague. Einstein's discovery of special relativity was exactly that. He was led to question the word 'simultaneous' and try to work out what it actually meant. The truth was a real surprise, that it doesn't exist.

  • @neilbarnett3046
    @neilbarnett3046 2 роки тому +29

    This is why I always told my pupils "Electrons have a property that we call spin, but it's just a convenient label, so we can say that one is opposite to another."
    Of course, then we had to go on and treat spin as though it meant something!

    • @annaclarafenyo8185
      @annaclarafenyo8185 2 роки тому +3

      That's exactly wrong. The spin of the electron is just like the spin of a bicycle wheel, if you switch the spin of the electron it can transfer its angular momentum to the bicycle wheel. The electron is actually spinning, except it doesn't have a size.

    • @jmckendry84
      @jmckendry84 2 роки тому +1

      @@annaclarafenyo8185 no, you are exactly wrong. Electrons are *not* actually spinning in a similar fashion to the bicycle wheel.

    • @annaclarafenyo8185
      @annaclarafenyo8185 2 роки тому +1

      @@jmckendry84 They are exactly spinning in the manner of a bicycle wheel, except without internal moving parts. You can transfer their spin to the wheel simply by flipping a magnetic field around the (iron) bicycle wheel, which flips all the magnetic-electron spins, and sets the wheel spinning a small but measurable amount, this is the extremely famous Einstein de-Haas experiment.
      The ONLY reason people don't say the electron is literally spinning is because it has no moving parts. If the spin was due to moving parts, it would have to be integer spin, not spin 1/2, and it would require superluminal speed for the parts. But aside from having no moving parts, the electron spin is exactly the same as a bicycle wheel.

    • @TheDarkblue57
      @TheDarkblue57 Рік тому +8

      @@annaclarafenyo8185 "But aside from having no moving parts, the electron spin is exactly the same as a bicycle wheel."
      Understand what you're saying but surely you can see the irony with this statement as a bicycle wheel is in fact a 'moving part'.

    • @annaclarafenyo8185
      @annaclarafenyo8185 Рік тому +2

      @@TheDarkblue57 "Spin without moving parts" is very easy to understand. "Spin is magic and quantum and has no classical analog" is not only false, but highly misleading, because quantum electron spin and quantum bicycle wheel spin are the same sort of thing, the only difference appears when you look inside to see what parts are moving.

  • @idorion9096
    @idorion9096 Рік тому +1

    that animation reminds me of a Mobius strip. in that one rotation causes a half twist and a full gets you back to the start.

  • @inigop.d.1270
    @inigop.d.1270 2 роки тому +38

    16:10 "the low GRAVITATIONAL entropy MASSIVELY outWEIGHed the MATTER entropy". What a confusing choice of words 😱🤣

  • @glennalberta
    @glennalberta 2 роки тому +28

    I love the humorous comments, BUT I also respect the serious investigators, theorists and mathematicians who have worked for well over a century to provide an understanding of our universe.

  • @shawn576
    @shawn576 Рік тому

    That bike wheel demonstration at the beginning is amazing. I've never seen that before.

  • @lanevotapka4012
    @lanevotapka4012 Рік тому +2

    Thanks! This was the first time that the coffee mug analogy made sense to me.

  • @magicmulder
    @magicmulder 2 роки тому +115

    Video: “Vectors are just arrows pointing in a direction.”
    My math prof: [almost gets a heart attack]

    • @mhorram
      @mhorram 2 роки тому +19

      Well no, it should be your English prof or your logic prof who might appropriately 'almost get a heart attack'. In the case of the English prof the statement would be a redundancy and therefore very poor use of the language. In the case of the logic prof the statement would be a tautology. All arrows have to point in a direction; can't be otherwise (unless the arrowhead is removed, I suppose).
      However, keep in mind that one discipline is not 'authorized' to take a previously defined concept and redefine it for its own purposes and claim that is the sole use of the term. This has been done. I have heard astronomers argue that Greeks 'misused' the term planets. Strange to make that claim. The English word planets is based on the Greek word (Latinized) _planetes_ which means wanderer. The Greeks were using this word quite appropriately to designate objects in the sky that moved (i.e. they were not stationary stars) but modern scientists in one of the biggest brain-farts in history and one of the greatest anachronisms ever used in logic were wrong (don't ever let an astrophysicist tell you history).
      All of this brings us to what Matt said and I would say he is right and your poor Math prof would be wrong. Have a look at the following explanation of Vector (the article does point out that there is a difference in the term Vector when used in physics as opposed to mathematics. As I said, one discipline can't appropriate a definition for its own purposes and require that to be the only definition acceptable.) en.wikipedia.org/wiki/Euclidean_vector
      I also recall what I was taught (more than 50 years ago) that velocity was vectored speed. I.e., velocity has an arrow (of direction) speed doesn't.

    • @amitwatcher12
      @amitwatcher12 2 роки тому +10

      The word vector is used for a bunch of different things depending on context. Here it was used as a short hand for "the vector representation of the rotation group".

    • @innocentbystander3317
      @innocentbystander3317 2 роки тому +3

      Almost is still quantified as zero heart attacks, right? Also, I don't understand how having a heart attack would he regarded as a viable math-proof. Tell your professor to try harder next time, lol!
      Yeah, science be brutal like that. Zero fraks given for feelings (aka biases), just based AF.

    • @Erotemic
      @Erotemic 2 роки тому +2

      Why? He doesn't say anything about the dimensionality of the space. I suppose you might include that they have a magnitude as well as a direction. But assuming n-dimensions space, I think that's a fine description.

    • @selforganisation
      @selforganisation 2 роки тому +1

      Because in the context of Euclidean geometry, they are. Though IIRC angular momentum is a pseudovector.

  • @RedLeader327
    @RedLeader327 2 роки тому +279

    Electrons: “I’ll try spinning, that’s a good trick!”

    • @arpitdas4263
      @arpitdas4263 2 роки тому +15

      Now this is pod racing

    • @adityaruplaha
      @adityaruplaha 2 роки тому +7

      I simply can't get away from Star Wars references and I love it.

    • @Kid_Naps
      @Kid_Naps 2 роки тому +1

      joke swift like a knife, I love it

    • @Sin526
      @Sin526 2 роки тому

      @@hyperduality2838 Duality is perhaps the _most_ fundamental of all universal properties

    • @qjo5158
      @qjo5158 2 роки тому +1

      This is where the fun begins...

  • @mlmimichaellucasmontereyin6765
    @mlmimichaellucasmontereyin6765 7 місяців тому

    Q: Why do electrons seem to be point-like? A: If we imagine the majority of the energy of the universe's magneto-dielectric "field" (MDF) that seems "dark" (i.e., either unknowable or simply unknown for being undetectable directly) is actually a fluidic ocean-like expanse of hyper-frequency hyper-plasma (of 2 major E-densities & pressure), then we can start to think about how disruptive/turbulent interactions of sub-field events are somewhat like similar events in an ocean of water. So, we can then think about vorticle flow events, displacement (shock) waves, pressure gradients, laminar flow regimes, and vectors of force. In other words, at the macro-scale of the cosmos and its most sub-elemental scale (and all scales between), the hydrodynamical principles of fluid mechanics enable all fluidic phenomena and interpenetrating field+subfield effects. Hence, heeding Einstein's maxim, we should make things as simple as possible, but not too simple.
    !
    For example, instead of imagining twisty strands of curvy geometry in fields of spooky maths connecting magic balls/points of mystic mumbo-jumbo about what we don't understand yet, we can just think about the energetic phenomena we observe (in the MDF, at all scales) as, essentially, embodiments and/or expressions of the hydrodynamical principles of fluid mechanics that enable and sustain the ocean-like nature of the MDF (the cosmos). Of course, this can be considered as an approach relying on the principle of fractality. However, "perfect" expressions of fractality only happen in the noosphere's domain of maths. The cosmos is more complex, using quasi-fractality to enable dynamic-evolutionary transformation and development.
    !
    Thus, instead of always trying to over-simplify and reduce cosmic totality, reality, and its enabling elements to silly 4-D (etc.), 3-D, and 2-D analogies and models, trying to isolate inseparably interdependent "events" (i.e., sub-field effects), we can understand vectors, point-like charges, and ball-like "particles" as artifacts of descriptive maths, inadequate perception, and misinterpretation of incompletely observed phenomena (field+subfield-effects). Otherwise, we may as well fish-like beings hypothesizing about our undetectable water-like field of being.

  • @dschony
    @dschony Рік тому

    That's very interresting!
    My knowledge must be entangled with yours, because I understand, what you're talking about. 😉
    It's a really clear explanation!!!

  • @gweiloxiu9862
    @gweiloxiu9862 2 роки тому +27

    An impressive amount of information packed into a mere 18 minutes.

    • @redberries8039
      @redberries8039 2 роки тому +2

      I haven't got 18mins so ..what do electron do if they DO NOT Spin?

  • @Sorenzo
    @Sorenzo 2 роки тому +164

    I was incredibly confused about the idea of spin in a point-sized onject, until I realized it was just a nonsense term.

    • @Quantum-
      @Quantum- 2 роки тому +43

      Welcome to every term given to every object or phenom in physics.

    • @Frankly7
      @Frankly7 2 роки тому +41

      It's not completely nonsense though. Quantum spin still has an effect on classical angular momentum, that's why we call it spin to begin with.

    • @cageybee7221
      @cageybee7221 2 роки тому +6

      Quantum Angle might have been a better name tbh

    • @letsomethingshine
      @letsomethingshine 2 роки тому +8

      @@cageybee7221 wouldn't "angle" imply that there is no "inertia-like state" to affect "momentum-like" circular activities?

    • @cageybee7221
      @cageybee7221 2 роки тому +10

      @@letsomethingshine _quantum angular momentum_ sounds like a spell but i guess it would be even more accurate.
      edit: spelling

  • @galahad-7634
    @galahad-7634 Рік тому +4

    The cube rotating made me nauseous, but the sphere rotating made me so dizzy that I nearly fell off my seat! It wasn't because of watching the movement, it was because I had an internal construct in my mind's eye that replaced my gyroscope for a second 🤢

  • @Erhannis
    @Erhannis Рік тому +1

    9:34 That is the craziest animation I've seen in a long time; I would not have easily believed such a structure possible.

  • @fugslayernominee1397
    @fugslayernominee1397 2 роки тому +363

    How about next episode: "What's Charge"

  • @RedNomster
    @RedNomster 2 роки тому +84

    1/2 spin is nicely represented as a mobius strip. It shows how a particle has to traverse a mobius strip twice to be in the starting position, which isn't the case of a ball/sphere.
    For a fiction novel I'm writing, a theoretical particle behaves like a mobius strip, acting as a roundabout for all other particles instead of a stoplight intersection that demands an increase in entropy. Just found it funny that the only real physics I know is research I've done to loosely justify my fake physics

    • @carlb.9518
      @carlb.9518 2 роки тому +10

      Also, the Pauli exclusion principle applies to them in a loose sense, because you can't have two nested Mobius strips. If you take 2 layers of paper and try to make a Mobius strip, you just get 1 big loop. I wonder if there is any significance to this, or if it's just a coincidence. (Probably the latter.)

    • @RedNomster
      @RedNomster 2 роки тому +5

      @@carlb.9518 that's clearly just two 1/2 spin particles compositing into a boson ;)

    • @genericytprofile852
      @genericytprofile852 2 роки тому +4

      Spoken like a true fiction writer

    • @paulmichaelfreedman8334
      @paulmichaelfreedman8334 2 роки тому +1

      @@RedNomster As in a positron-electron annihilation: 1/2 - (-1/2) = 1 = boson?

    • @rarebeeph1783
      @rarebeeph1783 2 роки тому

      @@paulmichaelfreedman8334 as someone with zero experience in the field, i vaguely recall hearing that said boson (/bosons) would be one or more gamma ray photons

  • @robertschlesinger1342
    @robertschlesinger1342 2 роки тому +2

    Excellent video. Very interesting, informative and worthwhile video .

  • @danielkunert6244
    @danielkunert6244 2 роки тому

    You explain this so easy to understand, thank you for the presentation

    • @feltonite
      @feltonite Рік тому +1

      Were we watching the same video?

  • @CChissel
    @CChissel 2 роки тому +22

    Intrinsic angular momentum, aka “spin” because when talking about something it’s just easier to use a word that doesn’t accurately describe it, unless both people know the idea behind “spin” in the context. But if people don’t understand what “spin” is they’ll think it’s actually spin. I think.

    • @Ma_Na_art
      @Ma_Na_art 2 роки тому +1

      I think this happens to quite a few terms now. Like, I keep hearing people use osmosis instead of diffuse, not realising osmosis is specifically about water potential.

    • @dalefirmin5118
      @dalefirmin5118 2 роки тому

      Don't even get me started on the colors and flavors of quarks.

    • @RedRocket4000
      @RedRocket4000 2 роки тому

      @@dalefirmin5118 Well at least there they always adding in the word quark so sort of a heads up it not your normal and flavor :)
      Still be nice they use totally different from normal words. At least one of the substitution fake languages that have been used in some fiction. Substitution, my term I think, is were they just assign a different sound and spelling to words in a already existing language.

  • @Andrew-yf3lu
    @Andrew-yf3lu 2 роки тому +21

    Its my goal in life to make it through an entire one of this videos, without confusion. Not there yet.

  • @GameFreak2413
    @GameFreak2413 3 місяці тому

    I've rewatched the spinning cube dozens of times and it doesn't compute for me how it doesn't tangle or get more and more twisted.

  • @delynnaddams8774
    @delynnaddams8774 Рік тому +1

    Magnetic spider, what an entanglement webs it weaves when it spooky action quantum spinor. Love the video

  • @donvineyard8654
    @donvineyard8654 2 роки тому +57

    "whatever crazy theory we haven't figured out yet." priceless. I want a t-shirt with that on it. love it.

    • @heremate2435
      @heremate2435 2 роки тому +1

      Me want t-shirt with cheesy quote on

  • @alexandermartin1837
    @alexandermartin1837 2 роки тому +62

    Amazing video. *PBS Space Time, Isaac Arthur, and The Exoplanets Channel are my favorite channels.*

    • @shoemakerx0105
      @shoemakerx0105 2 роки тому +13

      You forgot anton petrov

    • @The_SOB_II
      @The_SOB_II 2 роки тому

      Commenting this early... You definitely didn't finish it. Did you start it?

    • @meller7303
      @meller7303 2 роки тому +6

      I like astrum too

    • @callumgibson9167
      @callumgibson9167 2 роки тому +10

      Try Event Horizon, and John Michael-Godier. Although you're probably well aware if you frequent Isaac Arthur's channel.

    • @theMightywooosh
      @theMightywooosh 2 роки тому +3

      Cool worlds also

  • @TomHendricksMusea
    @TomHendricksMusea Рік тому

    Positive and Negative Charge
    Suggestion that charge is more fluid and less concrete then we thought - more shifting and switching about, and less confined to any specific location - more like a traveling magnetic field than a separate spot for negative charge and another spot for positive.
    My previous posts, part of a bigger connected idea - see summary at end - is that photons, electrons and positrons, are all three the same thing in different form.
    Further I add that the positron with a positive charge and the electron with a negative charge shift back and forth in the atom, like two entangled particles.
    This suggests solutions for certain problems:
    They include:
    SPIN , SUPERPOSITON, THE MISSING ANTI MATTER, ELECTRON WAVES PER SHELL, and THE UNCERTAINTY PRINCIPLE.
    The electron orbital holds two electrons with opposite spin, one electron has spin up, the other has spin down. They also have a magnetic moment.
    Suggestion that spin up is an electron and spin down is a positron, or vice versa. That would suggest why there is a limit of 2 per orbital. There are 2 charges.
    This concerns the two slit experiment. How can one photon interfere with itself in superposition?
    Suggestion that It could if that photon had converted to an electron positron pair. And the electron and positron annihilated each other and converted back to a photon energy, and back and forth.
    Where is the missing anti matter?
    Suggestion that it's in every atom, and that every electron has an entangled positron.
    (See summary for suggestion that both protons and neutrons are made of electron positrons, instead of quarks.)
    Certain wavelengths fit each electron she'll. The suggestion is that the wave of each electron is in reality a two part wave, were the crest, a positron alternates with a trough, the electron. They bounce back and forth as the wave travels the shell.
    The uncertainty principle suggests we can't know both the position and momentum of an electron. The idea that electrons and positrons are entangled and switch positions at certain times would support the uncertainty

  • @DivineMisterAdVentures
    @DivineMisterAdVentures 2 роки тому

    Awesome. Now I've got a connection back to the pioneers for a theory of Enthalpy in Quantum Intelligence. But really, you're talking about the difference between condensate matter (formless, flat) and structured, that occurs because of a loss or gain of energy. I interpret this as a change of quantum bases between 1 and 2 - essentially equivalent to the number of dimensions in a system. If one ignores entanglement as a separate thing - it pops in by itself as a primitive aspect of the 1 to 2 transformation. Can't get simpler than that theory, friend.

  • @locobob
    @locobob 2 роки тому +40

    I like how your videos have become steadily more and more complex over time. It illustrates how scientific research has become more and more abstract and cryptic as we have basically discovered the majority of simple and fairly complicated aspects of reality, and are now deciphering the inner workings. Sort of how everyone can use an iPhone but very few can actually take one apart and know what to do with it, and even less know how it was actually designed to work how it does.

    • @ThreeDaysOfDan
      @ThreeDaysOfDan 2 роки тому +1

      It's called bullshit

    • @jacobshirley3457
      @jacobshirley3457 2 роки тому +2

      @@ThreeDaysOfDan Which parts do you consider to be bullshit?

    • @EODReddFox
      @EODReddFox 2 роки тому +1

      We are not even close to the inner workings my friend. The more you know the more you realize how little you do. We’ve only pulled a shot glass from the ocean. Thats why the deeper we go the less “math and science” it really feels. In your own words “cryptic”. The inner workings are likely beyond any and all human ability to perceive or understand. And we should be cool with that.

    • @ls200076
      @ls200076 2 роки тому

      @@EODReddFox Man-machine hybrids it is then

    • @EODReddFox
      @EODReddFox 2 роки тому

      @@ls200076 guess so, im sure there are some fools out there who want to Skynet us.

  • @scottydu81
    @scottydu81 2 роки тому +124

    “Trust the science!”
    “Imagine a spinning ball except it’s not a ball and it’s not spinning.”

    • @innocentbystander3317
      @innocentbystander3317 2 роки тому +2

      This is what separates humans from ape-descendants. One has a future, one does not. That's evolution, baby!

    • @innocentbystander3317
      @innocentbystander3317 2 роки тому

      @Thomas A. Anderson
      Never did call him a monke, I actually think his comment is genius, but who cares what is actually said and the deeper meaning behind it, almost as if you were born to be my "Case-in-point."
      Congratulations! Darwin says to look both ways before crossing a roundabout; you might be driving.

    • @martiddy
      @martiddy 2 роки тому +1

      Well, without science I wouldn't be able to make this comment on the internet. So I trust science!

    • @scottydu81
      @scottydu81 2 роки тому +1

      @@martiddy I’m not saying not to trust science. I’m saying don’t turn scientists into prophets. They are regularly wrong.

    • @scottydu81
      @scottydu81 2 роки тому +2

      @Thomas A. Anderson Physicists are fundamentally wrong about at least one aspect of the standard model right now as we speak. Scientists are just as human as you or I and there is no such thing as a purely rational human being. They have the same biases, they are just as susceptible to pride and spite and even greed. So yes, I will mock some of the more bizarre things about the science we have right now.

  • @christophergame7977
    @christophergame7977 11 днів тому

    I like the notion of electrons being connected to its surroundings by ribbons. This makes a certain amount of intuitive topological sense. But it could spin only within bounds set by the speed of propagation of twist of the strands, if such a speed had a supremum, like the speed of light. If we suppose that the supremum is regularly reached, we have an account of the quantum described by Planck's constant, thought of as measuring angular momentum.

  • @saulgoode5616
    @saulgoode5616 2 роки тому +1

    I love your explanation, just what I needed, thank you.

    • @oldpariah
      @oldpariah 2 роки тому

      Me 2. Check out ua-cam.com/video/EK_6OzZAh5k/v-deo.html

  • @invalidaccount6147
    @invalidaccount6147 2 роки тому +267

    The most interesting part was that 720° rotation. Totally surprised!! 🙀

    • @jb6748
      @jb6748 2 роки тому +15

      Loved the animations.

    • @dimlighty
      @dimlighty 2 роки тому +12

      Yeah, I never thought it that way. Quantum physics is amazing and weird.

    • @rocktakesover
      @rocktakesover 2 роки тому +4

      Yep. Last time I was that blown away I learned about the double slit experiment 15(ish?) Years ago

    • @cliftut
      @cliftut 2 роки тому +4

      Everyone's cool until geometry does a triple pirouette off the handle.

    • @halamish1
      @halamish1 2 роки тому +11

      When cars still had mechanical distributors you had to rotate them through 720 degrees (two rotations) to return to the original position because the engine was 4 stroke

  • @l.m.892
    @l.m.892 2 роки тому +39

    "Spinors are exceptionally weird and cool." Nothing like an accurate description of a thing. I totally understand now.

    • @rogerfoxtrot4306
      @rogerfoxtrot4306 2 роки тому

      Weirdos please

    • @l.m.892
      @l.m.892 2 роки тому

      @@rogerfoxtrot4306 Have some spinors.

    • @andrewfulara5584
      @andrewfulara5584 2 роки тому

      A spinor is the thing between a scalar and a vector. Higgs is scalar field, Fermions are spinor fields, Bosons are vector fields. You can also call them spin 0, 1/2 and 1 fields (from symmetry).

    • @izdotcarter
      @izdotcarter 2 роки тому

      @@andrewfulara5584 what

    • @andrewfulara5584
      @andrewfulara5584 2 роки тому +1

      @@izdotcarter A 2D object in 3D space is close enough.

  • @jameswebb4593
    @jameswebb4593 2 роки тому

    My head was spinning so much from watching this , that I was thrown out of my seat .

  • @oraculox
    @oraculox 2 роки тому +3

    Makes me think that "reality" or classical phisics manifest through the amount of information or number of interaction between fields. The fewer interactions there are, the fewer information, so the more reality depends on the wave function and probability, and deeper than, that spinors have a phase of overlapping wave functions, and become evident through momentum.

    • @cdogthehedgehog6923
      @cdogthehedgehog6923 2 роки тому +2

      Nah

    • @oraculox
      @oraculox 2 роки тому +1

      ​@@cdogthehedgehog6923 Hahahah, of course "Nah" you buzz killington., hhehe. Just phrasing a moments thought.

  • @aMartianSpy
    @aMartianSpy 2 роки тому +106

    That animation broke my brain.

    • @debbiehenri345
      @debbiehenri345 2 роки тому +12

      It's pretty incredible. All the while it's happening your mind is thinking - won't end well, won't end well, oh - it does. What did I miss - and when?
      This would make a calming, hypnotic visual for babies - in the hope they can grow up to explain electron spin but non-spin to their parents.

    • @AmryL
      @AmryL 2 роки тому +3

      @@debbiehenri345 I literally took 2 belts, linked them together with a clip and wedged each end in opposite doors. It took a few tries, but it is possible to turn the clip a full 720 degrees and unwind the belts; the trick to to move the first belt over, the other under. Then when going for round 2, move the first belt Under, the other Over.

    • @aleisterlavey9716
      @aleisterlavey9716 2 роки тому

      So.... are you related to those crystal skulls then?

    • @dan7291able
      @dan7291able 2 роки тому +1

      @@AmryL would you CUT IT OUT dude..youre gonna implode the universe or something, put the belt AWAY

  • @bersl2
    @bersl2 2 роки тому +18

    Today's episode is scoring a 7.5 on the mind-blow-o-meter. Many re-watches will be required.

  • @contemporaryhumours
    @contemporaryhumours Місяць тому

    Good job man. Thanks for the video!

  • @quetzalthegamer
    @quetzalthegamer Рік тому +1

    DomainofScience touched on this somewhat in his "Map of Particle Physics Video". All elementary particles, including electrons, have a spin value, which is called "intrinsic angular momentum", but this type of spin isn't the same thing as classical spin, like a planet or a basketball.