The most unexpected answer to a counting puzzle

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  • Опубликовано: 12 янв 2019
  • Solution: • Why do colliding block...
    Even prettier solution: • How colliding blocks a...
    Help fund future projects: / 3blue1brown
    An equally valuable form of support is to simply share some of the videos.
    Special thanks to these supporters: 3b1b.co/clacks-thanks
    New to this channel? It's all about teaching math visually. Take a look and see if there's anything you'd like to learn.
    NY Times blog post about this problem:
    wordplay.blogs.nytimes.com/20...
    The original paper by Gregory Galperin:
    www.maths.tcd.ie/~lebed/Galpe...
    Evidently, Numberphile also described this problem (I had not known):
    • Pi and Bouncing Balls ...
    You'll notice that video has an added factor of 16 throughout, which is not here. That's because they're only counting the collisions between blocks (well, balls in their case), and they're only counting to the point where the big block starts moving the other way.
    Thanks to these viewers for their contributions to translations
    Bengali: Prayas Sanyal
    Hebrew: Omer Tuchfeld
    Italian: @Deye27, @hi-anji
    ------------------
    These animations are largely made using manim, a scrappy open source python library: github.com/3b1b/manim
    If you want to check it out, I feel compelled to warn you that it's not the most well-documented tool, and it has many other quirks you might expect in a library someone wrote with only their own use in mind.
    Music by Vincent Rubinetti.
    Download the music on Bandcamp:
    vincerubinetti.bandcamp.com/a...
    Stream the music on Spotify:
    open.spotify.com/album/1dVyjw...
    If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then "add subtitles/cc". I really appreciate those who do this, as it helps make the lessons accessible to more people.
    ------------------
    3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with RUclips, if you want to stay posted on new videos, subscribe: 3b1b.co/subscribe
    Various social media stuffs:
    Website: www.3blue1brown.com
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Комментарии • 7 тыс.

  • @antiscribe4150
    @antiscribe4150 4 года назад +13462

    Pi has no business showing up literally everywhere in math.

    • @onebeets
      @onebeets 3 года назад +885

      Wait, it's all pi?

    • @gruncho8227
      @gruncho8227 3 года назад +1066

      @@onebeets always has been...

    • @bignicebear2428
      @bignicebear2428 3 года назад +227

      What goes around comes around and voila: pi.

    • @Saturnares
      @Saturnares 3 года назад +130

      Nobody expects the Pi inquisition!

    • @dathaniel9403
      @dathaniel9403 2 года назад +87

      @antiscribe it’s like that one guy who always seems to be at every party but no one knows who invite him. He just shows up no matter where you are.

  • @ikkocan
    @ikkocan 5 лет назад +6729

    Originally discovered in 1995, published in 2003. maybe he DID count the clacks?

  • @andrewdavis1138
    @andrewdavis1138 8 месяцев назад +136

    2:37 I was watching in the middle of the night and got absolutely flashbanged by the sudden swap from dark coloured example to bright white paper.

  • @siddharthabbanerjee
    @siddharthabbanerjee 2 года назад +952

    Another interesting observation : When the masses colliding are powers of some other base (say 3), the number of collisions still equal the digits of Pi, but in the same base.
    Eg : Pi in base 3 is 10.010211012222010211002111110221222220111201212121...
    If you run the simulation with masses of 1, 3^(2 * 1), 3^(2 * 2), 3^(2 * 3),..., then the number of collisions will be 1 (base 3), 10 (base 3), 100 (base 3), and 1001 (base 3) respectively.
    Number of collisions for 1,3^(2 * 50) will be first 50 digits of Pi in base 3 : 10010211012222010211002111110221222220111201212121 , or 2255343044159619899886237 in decimals.

  • @poopcatapult2623
    @poopcatapult2623 5 лет назад +6661

    Teacher: "gimme some digits of pi"
    Me: "clack clack clackclackclackcla... clackclack clack clack... Wait for it"
    Teacher: "what on earth is that supp...?"
    Me: "... clack"

    • @RubyPiec
      @RubyPiec 5 лет назад +91

      3.1415926535897932
      There take that

    • @mediding7001
      @mediding7001 5 лет назад +267

      No, it's:
      clack clackclack claclaclclcl reeEEEEEeee clacla clack clack... clack

    • @mikeymcmikeface5599
      @mikeymcmikeface5599 5 лет назад +16

      I demand immediate satisfaction!

    • @chikoroblox9734
      @chikoroblox9734 5 лет назад +6

      I baked you a pie

    • @skyspects1211
      @skyspects1211 5 лет назад +3

      Damn, this made my day! 😂😂😂

  • @Jouzou87
    @Jouzou87 4 года назад +10638

    Physicists: "Noo! You can't have ideal collisions make a sound!"
    3B1B: "Haha, blocks go brr"

    • @midlanismail416
      @midlanismail416 3 года назад +136

      Don't you mean clack

    • @pixelartkid7965
      @pixelartkid7965 3 года назад +209

      @@midlanismail416 in the 100000kg one it went brrrrrr

    • @aa01blue38
      @aa01blue38 3 года назад +27

      The sound also goes hypersonic because the frequency of clacks is so high

    • @thelukedankwalker
      @thelukedankwalker 3 года назад +39

      @@aa01blue38 lmao what, that’s not how that works dude

    • @jamesorendorff2284
      @jamesorendorff2284 3 года назад +75

      @@aa01blue38 "Hypersonic" means "faster than sound"...
      You literally just said "the sound goes faster than sound".

  • @hotpockets1417
    @hotpockets1417 6 месяцев назад +56

    This is why I love math. You always look at a problem, read it out loud, then discover something about that problem. It's like there is always a hidden puzzle in math equations. For example, in 7th grade, we were learning about circumference. My teacher showed the class a video which said that if you take the diameter and try to wrap it around a circle, there's a tiny bit left, to which I realized that that tiny bit looked EXACTLY like pi, or 3.14. It's so cool finding small details that make so much since!

    • @user-rc1mv2zy3r
      @user-rc1mv2zy3r 3 месяца назад +3

      🤓🤓🤓

    • @hotpockets1417
      @hotpockets1417 3 месяца назад

      @@user-rc1mv2zy3r thanks :)

    • @berserk9968
      @berserk9968 22 дня назад

      ​@@user-rc1mv2zy3ryou didn't come to a mathematical video to just spot "nerds" now didnt you

    • @user-rc1mv2zy3r
      @user-rc1mv2zy3r 19 дней назад

      🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓

  • @erinc129
    @erinc129 Год назад +17

    the clacking sound is so satisfying i want it on repeat forever in my brain

  • @evank3718
    @evank3718 5 лет назад +8886

    1:40 Me opening the door at 1:43 am

  • @Selicre
    @Selicre 5 лет назад +3759

    That animation of the spherical cow actually made me wheeze. That was unexpected

    • @chobyriley417
      @chobyriley417 5 лет назад +63

      Selicre [Hyper] it’s my favorite picture on wikipedia

    • @NickiRusin
      @NickiRusin 5 лет назад +11

      that's a great image

    • @Selicre
      @Selicre 5 лет назад +59

      @@NickiRusin I really, really, really like this image.

    • @NickiRusin
      @NickiRusin 5 лет назад +50

      @@Selicre a long time ago my dad told me a great physics joke. I don't have the patience to translate it from Russian, but the punchline boils down to "a spherical horse in a vacuum". For some reason I never tried to visualize that, but now it's crisp in my mind thanks to this video.

    • @AlRoderick
      @AlRoderick 5 лет назад +43

      ASSUME THE SPHERICAL COW!

  • @bmschech
    @bmschech 9 месяцев назад +9

    I thought your video on relating the Basel Problem to the circle was simply gorgeous, astonishing and unforgettable. These three surpass even that! Thank you so very much!

  • @ItsNekotaku
    @ItsNekotaku Год назад +2

    i love coming back to this video every once in a while because it's just so mind boggling that it reblows my mind every time

  • @The-Rest-of-Us
    @The-Rest-of-Us 5 лет назад +9181

    Highest quality RUclipsr out there. And I mean that in every dimension.

    • @ariqahmer
      @ariqahmer 5 лет назад +33

      Make that in concurrent parallel dimensions 😉

    • @jacobkleeman8546
      @jacobkleeman8546 5 лет назад +10

      Even the fourth?

    • @ganaraminukshuk0
      @ganaraminukshuk0 5 лет назад +34

      @@jacobkleeman8546 All spatial and abstract dimensions up to infinity, even the temporal dimensions (if 2D time and up makes any sense). Even the fractal dimensions where you can have non-integer values (like 1.3425 dimensions). Even any system, existing or to-be-discovered or purely nonsensical for the sake of argument, that calls for negative value dimensions, or imaginary number values, or complex values, or quaternions, or octonions, or sedonions, and beyond.

    • @papi1050
      @papi1050 5 лет назад +10

      @@ariqahmer we need to talk about parallel universes

    • @ariqahmer
      @ariqahmer 5 лет назад +2

      @@papi1050 Agreed 🤔😎😍

  • @ZzSlumberzZ
    @ZzSlumberzZ 4 года назад +794

    *gets this on recommendations for the 10th time*
    Brain: click on it.
    Me: but I've already wa-
    Brain: *do it.*

  • @witherphoenixlp6476
    @witherphoenixlp6476 Год назад +8

    Im not here for the math stuff. Im here for the colliding noise..

  • @AbCat4
    @AbCat4 2 года назад +8

    I like how the speed of the last collision is an expression of the remaining digits. So when it's 314(15...) collisions it juuuust reaches the line, but when it's 31415(92...), it gives the moving block a proper final spank to send it on its way.

    • @vijayrajendran4006
      @vijayrajendran4006 Год назад

      wait, if what you're saying is true, we can get more digits by analysing the speed more intuitively?

  • @rishujeetrai5780
    @rishujeetrai5780 4 года назад +2517

    Pi is a creep. I'm gonna file a restraining order on him. He has started to show up on my integration problems now. He's gone too far.

    • @oblivion2755
      @oblivion2755 4 года назад +61

      pi is a cursed number, way more cursed than 13 or 666.

    • @iqbaltrojan
      @iqbaltrojan 4 года назад +20

      @@oblivion2755 whats wrong with 13 lol it's my lucky number

    • @thewall4069
      @thewall4069 4 года назад +22

      @@iqbaltrojan oh the irony

    • @notyepdranel961
      @notyepdranel961 4 года назад +18

      @@oblivion2755 *4* is the worst

    • @akasakasvault7597
      @akasakasvault7597 4 года назад +17

      @@oblivion2755 indeed four, or, in Japanese, shi, which us also the Japanese word for death, is terribly cursed

  • @kyriakos02
    @kyriakos02 5 лет назад +6510

    Clack.

    • @AmadeuShinChan
      @AmadeuShinChan 4 года назад +61

      [ I donot know. Let us ask someone. ]

    • @finalftl732
      @finalftl732 4 года назад +245

      At some point the clacks would be so rapid that the frequency created would be too high pitched for human ears lmao

    • @Torthrodhel
      @Torthrodhel 4 года назад +72

      @@finalftl732 so ideally you'd find the ideal magnitude that over a 10 hour total period would at some point get closer to the highest averagely humanly perceivable pitch than the next magnitude, which breaks that barrier. And there's your 10 hour video.

    • @alexniggins1799
      @alexniggins1799 4 года назад +15

      MrBeast can, ofc.

    • @danielreed540
      @danielreed540 4 года назад +21

      Just loop the system - add an opposing wall the other side of the masses/objects; masses between 2 walls. Then that system cycles, repeating (to infinity). Under the special ideal conditions. A truly closed system, with only total motion & energy transfers, where all is constant & only velocity can change.

  • @PersonWithAFunnyBone
    @PersonWithAFunnyBone 8 месяцев назад +4

    3Blue1Brown never fails to make me question reality!

  • @milk_WOO
    @milk_WOO 4 месяца назад +1

    thank you for giving me a math project! this was very fun to work on and you explain this very well.

  • @Indomat64
    @Indomat64 5 лет назад +483

    Small brain: Memorizing digits of pi
    Galaxy brain: Having blocks of precise mass on hand and counting the collisions

    • @froggymine5003
      @froggymine5003 5 лет назад +32

      Also me: destroying earth to find Pi to the 20th digit

    • @torezcoasters6043
      @torezcoasters6043 4 года назад +1

      Don’t forget about removing friction!

  • @X_w45ey89
    @X_w45ey89 Год назад +1

    Never have I ever thought that the small explanation bit with words sliding away at 3:59 from a math video would get me giggling like a kid at six in the morning

  • @iamsopro4115
    @iamsopro4115 10 месяцев назад +8

    Doctor: it’s not gonna hurt!
    The kid in the next room: 2:22

  • @mrsaussissonsec1054
    @mrsaussissonsec1054 3 года назад +727

    Saw this at least 5 times. Still amazed at the quality of the explanations and the correlation itself. You are truly one of the best out there.

  • @EnglishNijisanji
    @EnglishNijisanji 5 лет назад +1039

    I don’t speak English.
    So I don’t get it well.
    But when I got that the collisions number turned near π, I was like “!?.”
    It was so beautiful phenomenon.

    • @anselmschueler
      @anselmschueler 5 лет назад +5

      cool

    • @dxrpz1669
      @dxrpz1669 5 лет назад +226

      Hi (sorry for my bad english)

    • @IQuickscopeCA
      @IQuickscopeCA 5 лет назад +6

      !!コメントだけで登録者10万人を目指す すうがくはすばらしいですね

    • @EnglishNijisanji
      @EnglishNijisanji 5 лет назад +17

      Blakee
      Yes, I believe math is beautiful and also amazing

    • @ARlELATOM
      @ARlELATOM 5 лет назад +14

      !!コメントだけで登録者10万人を目指す You write English wonderfully! ❤️

  • @timwhite1783
    @timwhite1783 Год назад +1

    0:19 Love the spherical cow animation btw.

  • @lehamsterhollandais9908
    @lehamsterhollandais9908 6 месяцев назад +1

    i truly understand why people loves so much mathematics, all makes sense and everything is explained , thats just magical 😊

  • @myukunigunde8372
    @myukunigunde8372 4 года назад +177

    Any maths/science/engineering problem: *exists*
    Pi: aight imma head *in*

  • @andrewmoonbeam321
    @andrewmoonbeam321 4 года назад +844

    2:32 ' Credit to the viewer Henry Cavill.' Of course Superman would know the answer. He's brilliant at math. And physical education.

  • @ericallen333
    @ericallen333 3 месяца назад +1

    Thanks for showing me math can be fun and interesting. Great video

  • @paragbehera754
    @paragbehera754 3 месяца назад

    I think the large cube motion represent as a semi-circle or half sine wave. Maybe something has to do with that which would be half of pie no collision to the big cube and half value are from just the end wall.

  • @FacultyofKhan
    @FacultyofKhan 5 лет назад +1016

    I always COUNT my blessings whenever 3b1b uploads an UNEXPECTED video. As usual, great work!

    • @ParthKohli
      @ParthKohli 5 лет назад +12

      We feel the same way about you. :)

    • @SheikhEddy
      @SheikhEddy 5 лет назад +5

      I love the videos you put up! Great content that is nearly impossible to find elsewhere :D

    • @PhysicsMath
      @PhysicsMath 5 лет назад

      I am also making video on physics

    • @FacultyofKhan
      @FacultyofKhan 5 лет назад +1

      @Just A Random Dood Shhhh let me make my lame puns on the title

    • @vikranttyagiRN
      @vikranttyagiRN 5 лет назад +1

      I Subbed to Ur channel and really glad to have found you

  • @DynestiGTI
    @DynestiGTI 5 лет назад +294

    2:31 when the actor for Superman helps out 3Blue1Brown

  • @justinhoch4180
    @justinhoch4180 2 года назад

    I’m just here to say that I’m glad that there was sound on those simulations, they were satisfying

  • @Ashishbro
    @Ashishbro Год назад +5

    0:38 the best decision ever took place on the planet

  • @blackpenredpen
    @blackpenredpen 5 лет назад +460

    WOW!!

    • @herlock2
      @herlock2 5 лет назад +9

      Well hello there :)

    • @giladu.6551
      @giladu.6551 5 лет назад +9

      Hi BPRP! Love your videos

    • @wontpower
      @wontpower 5 лет назад +9

      Isn’t it?

    • @yash5879
      @yash5879 5 лет назад +7

      Congrats for the 200k man
      1/1-x

    • @blackpenredpen
      @blackpenredpen 5 лет назад +2

      me thank you!!!!

  • @bobbyp4025
    @bobbyp4025 4 года назад +1115

    Sliding off to infinity, never to be touched again- so sad

    • @Kido336
      @Kido336 4 года назад +38

      *adding sad comment about you and your ex

    • @ah2522
      @ah2522 4 года назад +8

      my dad's hand and my crtoch

    • @noddye1764
      @noddye1764 4 года назад +22

      r/cursed comments

    • @tarzbaow
      @tarzbaow 4 года назад +2

      @AssmasterFlex69 until the big crunch, and everything will be once again, at once place, at one time

    • @maxtreme2901
      @maxtreme2901 4 года назад +2

      Bobby P the blocks will forever remember how their first and last touches were

  • @michaelelliotbrownle
    @michaelelliotbrownle Год назад

    "I highly encourage you to take a stab at it yourself" is the most someone has ever overestimated my abilities

  • @johnchessant3012
    @johnchessant3012 Год назад +1

    I love how the pi creature goes "this doesn't seem like me..."

  • @BobbyDukeArts
    @BobbyDukeArts 3 года назад +909

    What the what!!!!! That's so cool

    • @godchild7545
      @godchild7545 3 года назад +10

      Wow I didn’t know you were interested in this kind of stuff!

    • @damianh.1429
      @damianh.1429 3 года назад +4

      Yo big fan dude keep it up

    • @colewilkie
      @colewilkie 3 года назад +3

      Fancy meeting you here, woodsman.

    • @lasmalux
      @lasmalux 3 года назад +2

      What the what

    • @xilnoi
      @xilnoi 3 года назад +1

      wood

  • @djsalad5752
    @djsalad5752 4 года назад +292

    “Like a satisfying game of breakout.” Is my favorite analogy on this channel so far.

  • @Lefty7788tinkatolli
    @Lefty7788tinkatolli 6 месяцев назад

    "Sailing off into infinity never to be touched again"
    I felt that.

  • @jasongusta7419
    @jasongusta7419 2 года назад +1

    I loved this video but lost it for 3 years I am so glad I found it again,
    comment "salute" for those who still haven't refound this

  • @epochthekid
    @epochthekid 4 года назад +1484

    3:56
    Why is this cow your idea of "way over-idealized" and why do I agree?

    • @different_stuff
      @different_stuff 4 года назад +284

      i don't know about a spherical cow, but there is popular joke about spherical horse:
      Some man hired physicists to calculate which horse will finish first in the upcoming races. They gave him their results. And that horse didn't win. Angry man asked physicists why is that so, and they replied, that they calculated race results for spherical absolutely black horses in vacuum.
      So this is a joke about over-idealized conditions that physicists use in their calculations.

    • @fordsquared537
      @fordsquared537 4 года назад +113

      DifferentStuff Yeah, that’s pretty much it. Both my engineering teachers in the past enjoyed the phrase “spherical cow in a vacuum,” which just says how engineers and physicists would assume the cow is a sphere so that calculations are much easier

    • @georgiykireev9678
      @georgiykireev9678 4 года назад +10

      @@fordsquared537 In my language it's a horse.

    • @infintiyward
      @infintiyward 4 года назад +24

      in topology, you count holes. A cow (assuming it had no holes) would be the same as a sphere from a topological perspective since they both have no holes.

    • @josephnimal953
      @josephnimal953 4 года назад +51

      It's from a Neil deGrasse Tyson's joke. It's about how physicists love to see the things in universe to be a perfect sphere. If u ask a farmer what is a perfect cow, he will answer a perfect cow is the one which will give lots of milk, a butcher will answer a perfect cow is the one which is fat. But a physicist will answer that a perfect cow is a cow which is spherical.

  • @MatematicaRio
    @MatematicaRio 4 года назад +653

    Pure poetry! ❤️

  • @SCP--sf3fu
    @SCP--sf3fu 3 года назад +1488

    3blue: Quick! I need some visual way to show the audience how over-idealized this simulation is!
    1brown: Cow sphere
    3blue: w h a t ?
    1brown: _c o w s p h e r e_

    • @shadesmarerik4112
      @shadesmarerik4112 3 года назад +33

      cowsphere is one word actually

    • @alx-lm3kg
      @alx-lm3kg 2 года назад +10

      @@shadesmarerik4112 hiw do you know that???!?!?

    • @jasongusta7419
      @jasongusta7419 2 года назад +6

      did he stutter 3blue?

    • @maxnolife_
      @maxnolife_ Год назад +10

      @@achtsekundenfurz7876 Oh so it’s just the humor for simplified models such as a spherical cow because the shape of a cow is too complex lmao

    • @IanBLacy
      @IanBLacy 11 месяцев назад +9

      “Assume a spherical cow in a vacuum”

  • @howdareyou-cs4qn
    @howdareyou-cs4qn 4 месяца назад

    This is amazing, physics teachers never taught this, and everything we learned was designed to solve problems, from conservation of momentum to conservation of mechanical energy, and we even came to a conclusion E(lose)=1/2 (M1•M2)/(M1+M2) • V(relative) how fascinating physics is now

  • @theNatura1_
    @theNatura1_ 9 месяцев назад

    something about the collision sound is so satisfying

  • @humanguy1643
    @humanguy1643 4 года назад +256

    Everybody gangsta till the blocks start pullin’ out autotune

  • @underscoredfrisk
    @underscoredfrisk 4 года назад +443

    Me: Hey that looks like Pi lol what a coincidence
    Me: Ah

  • @yyy76yyvhxxffb32
    @yyy76yyvhxxffb32 Месяц назад +1

    It probably appears because the velocity gained and lost between both cubes which then represent aceleration diferences which then represents the variation between sen and coss

  • @ivancarrascoq
    @ivancarrascoq 11 месяцев назад

    The transient of any natural movement will be e^n where n is x*jw, which is a frequency.
    Then, any natural movement has “e” implied and a natural oscillation associated. We know from Euler that there is a relationship between e and Pi.
    Great video 👏

  • @stevenvanhulle7242
    @stevenvanhulle7242 4 года назад +604

    Originally discovered in 1995, published in 2003.
    Galperin (for 8 years): "Unbelievable. Unbelievable. Unbe... Well, time to publish then, I guess."

    • @TechSupportDave
      @TechSupportDave 4 года назад +9

      that's what i was wondering. why wait almost 10 years to publish it?

    • @hiransarkar1236
      @hiransarkar1236 4 года назад +67

      The time he took to count the no. of collisions

    • @Proccito
      @Proccito 4 года назад +90

      @@hiransarkar1236 Gralperin: "956...957...958..."
      His wife: "Honey. Dinner is ready!"
      Gralperin: "Sure, I am comming soon...fuck...1...2...3..."

    • @matejpesl6442
      @matejpesl6442 4 года назад

      Xd

    • @derwastl
      @derwastl Год назад

      no

  • @jademonass2954
    @jademonass2954 4 года назад +81

    1:40 what a cool sound effect

    • @hishykot
      @hishykot 3 года назад +10

      Kinda sounds like the beginning of that one Crystal Castles song🤔

    • @uvuvwevwevweonyetenyevweug6314
      @uvuvwevwevweonyetenyevweug6314 3 года назад +1

      Sounds like a radio

    • @Geotrax2
      @Geotrax2 Год назад +2

      the beginning sounds like a geiger counter

    • @megaman4354
      @megaman4354 Год назад +1

      sounds like a creaking door

    • @_._---.
      @_._---. 11 месяцев назад +8

      ​@@hishykotCrimewave? Yeah I thought the same thing.

  • @retrotech383
    @retrotech383 Год назад

    i dont know how but this guy makes math actually interesting

  • @cheeseburgerpro69
    @cheeseburgerpro69 8 месяцев назад +1

    Thank you for letting me learn what “ 20 to the power of 5” is

  • @hisham1111
    @hisham1111 3 года назад +273

    I really, REALLY, appreciate you leaving in that last bump at 3:53

    • @EntergeticalakaBot
      @EntergeticalakaBot 2 года назад +11

      Its just so amazing when the 1 kg block is moving slightly faster than the other block and you are just like ooooooooooooooooooooooooooooooooooOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOHHHHHHHHHH AAAAAAY

    • @EntergeticalakaBot
      @EntergeticalakaBot 2 года назад +2

      @DON'T I WONT 😶

  • @iammrbeat
    @iammrbeat 5 лет назад +698

    Woah. Freaking woah.

    • @aidenmcubing
      @aidenmcubing 3 года назад

      @Laquelectro woah

    • @sunitakrishna3864
      @sunitakrishna3864 3 года назад

      s

    • @ignacio6851
      @ignacio6851 3 года назад +17

      mr beast give me moners

    • @fakeuber8254
      @fakeuber8254 3 года назад +5

      @@ignacio6851 this is not Mr Beast, but Mr Beat. Instead of giving you money he gives you a beat down

    • @osirisapex7483
      @osirisapex7483 3 года назад

      Mr Beat on a 3b1b vid? Worlds are colliding

  • @ChandrasegaranNarasimhan
    @ChandrasegaranNarasimhan Месяц назад

    Thanks for the video. Enjoyed it.

  • @user-vc8ep9cr2f
    @user-vc8ep9cr2f 8 месяцев назад

    perfect explication of this fenomen. perfect video continue like this bro.

  • @InsertName5015
    @InsertName5015 3 года назад +57

    1:34 The sound is perfect

  • @Shubham-qk8fw
    @Shubham-qk8fw 5 лет назад +201

    Content - 💯
    Editing - 💯
    Voiceover - 💯
    That's the definition of 3 blue 1 brown. Keep up the good work. U will definitely hit 10M subscribers soon

    • @guilhermegondin151
      @guilhermegondin151 5 лет назад +5

      I would give another 💯 for the colision sound kkkkk

    • @enverko
      @enverko 5 лет назад +2

      I wouldn't say soon, because for some reason most people hate math for no apparent reason. If they were to see the true beauty of math I believe there would be a lot more people loving math!

    • @Shubham-qk8fw
      @Shubham-qk8fw 5 лет назад

      @@guilhermegondin151 true, how could I forget that?

    • @Shubham-qk8fw
      @Shubham-qk8fw 5 лет назад

      @@enverko Yaa you are absolutely right

    • @totoxahc
      @totoxahc 5 лет назад

      Date format - 0

  • @skilzrus8965
    @skilzrus8965 11 месяцев назад

    i have rewatched this at least 10 times, still entertained

  • @MrTaken-tl4bw
    @MrTaken-tl4bw Год назад

    every now and then, this video comes to my feed, and i watch it just for the sound

  • @jotarokujo5849
    @jotarokujo5849 5 лет назад +1896

    Wrong
    The 100²⁰ would have destroyed our slippery floor

    • @carltonblend
      @carltonblend 5 лет назад +95

      And our tiny cube, either that or the bigger cube itself collapses into a black hole lol

    • @afoxwithahat7846
      @afoxwithahat7846 5 лет назад +13

      @@carltonblend And eats the Tinny cube

    • @thfFromRussia
      @thfFromRussia 5 лет назад +15

      ​@@carltonblend and even if it has no enough mass for a black hole its gravity influences purity of the experiment )

    • @Voidmoth1
      @Voidmoth1 5 лет назад +13

      what about a 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 kg
      mass

    • @asfi637
      @asfi637 5 лет назад +24

      @@carltonblend What if the cube is made out of bedrock?

  • @toothandsticks
    @toothandsticks 4 года назад +158

    Dr. Galperin was my geometry professor at University. I have never enjoyed geometry so much in my life. The man knows and can prove an incredible number of astounding, non-obvious facts. Thanks for sharing his work!

  • @roymuerlunos2426
    @roymuerlunos2426 Год назад +1

    Common core lessons in a billion billion billion billion nutshells,
    Clacks is in session

  • @artisttemple8268
    @artisttemple8268 2 года назад +3

    I was with you until you mentioned the Black Hole lol. Yet; as someone who was not taught math in a fun way, I'm very grateful to you for creating this channel. Thank you! ✖➕➖➗〰🟥🔶❇🔘💜

  • @XxJoe1101xX
    @XxJoe1101xX 5 лет назад +120

    That "clack" sound you added is apparently ASMR to my ears, so it's very appreciated.

  • @feynstein1004
    @feynstein1004 5 лет назад +1222

    Ah so 3blue1brown is blueballing me. Figures 😂

    • @dreamer097
      @dreamer097 5 лет назад +47

      you mean 3blue1brownballing you..?

    • @GewelReal
      @GewelReal 5 лет назад +21

      3blueballing

    • @lankymcgainsplease1236
      @lankymcgainsplease1236 5 лет назад +14

      Would you rather they brown balled you?

    • @PrincessEev
      @PrincessEev 5 лет назад +3

      tfw you came into the comments to make this exact joke xD

    • @aidanroberjot7469
      @aidanroberjot7469 5 лет назад +1

      Well at least you can see where the circle comes from coz the equation of a circle is (x-a) ^2 +(y-b) ^2 = r^2 so 1/2m1v^2 + 1/2m2v2^2 = const. is clearly a circle equation

  • @chyuyeyo9933
    @chyuyeyo9933 9 месяцев назад +1

    do you have any update on this? I found an interesting correlation between pi number, circle and perhaps collisions of all particles in the universe? Is there any concept of collision force? Excuse my questions I was not good at physics during school I am just being curious and imaginative

  • @LydellAaron
    @LydellAaron 2 года назад +4

    Question: Would this same algorithm compute TAU if we switched the walls once after the initial series of collisions before the larger block is ejected back out from where it came? Let PI be defined as C/r (circumference of circle divided by the radius), AND TAU which is C/d (circumference / diameter).
    Can we reverse the roles of the walls to block the heavier block from leaving, so that the "high impedance" wall and "open circuit" walls are switched?

  • @PhoenixLive_YT
    @PhoenixLive_YT 5 лет назад +68

    3:56 me after watching this video....

    • @pi2590
      @pi2590 7 месяцев назад

      YEAH PHOENIX

  • @iwillspam5985
    @iwillspam5985 5 лет назад +256

    3B1B's homework best homework

    • @alessandroceloria
      @alessandroceloria 5 лет назад +13

      The next day...
      Math teacher: Have you done your homework for today?
      Me: No, but I know why if you shoot a moving object to a still one with a mass ratio of 10^k under no friction conditions you get the digits of pi!

    • @avgchz9444
      @avgchz9444 5 лет назад

      I know, I'm gonna do this instead of my actual homework

  • @Michi880088
    @Michi880088 11 месяцев назад

    I find it very interesting that in the first case 100% of the energy is transferred back onto the initial 1kg while for high masses a certain amount of energy will stay on the left mass which will never catch up with the larger mass again

  • @error_6o6
    @error_6o6 Год назад

    3:56 why did this make me love the whole video

  • @sharbel9624
    @sharbel9624 5 лет назад +125

    Reading comments section:
    .
    .
    Expectations: people discuss math
    reality: clack clack clack

  • @tyriekovco711
    @tyriekovco711 5 лет назад +867

    Okay how many collisions if it was 10^1,000,000 times the weight of a 1kg object?
    Me: C L A C K

    • @batzal9459
      @batzal9459 5 лет назад +12

      1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000^10 years later " ... Clack.. I freaking finished to count that, oh boi!!"

    • @full5339
      @full5339 4 года назад +2

      It will become part of it.

    • @full5339
      @full5339 4 года назад +8

      Imagine gravity.

    • @full5339
      @full5339 4 года назад +1

      Or it would get so hot. May be it could melt.

    • @oliverholm3973
      @oliverholm3973 4 года назад +2

      @@full5339
      I prefer to read this comment without the context of your other two.
      Hello.
      _Imagine gravity._

  • @ngyanloongmoe1305
    @ngyanloongmoe1305 Год назад +7

    1:38 open the 0.25x speed

  • @ErniSpencer
    @ErniSpencer Месяц назад

    когда не мог определиться, что сдавать и купила на EL курсы Кико вместе с курсами физика и теперь ты здесь

  • @GoldenGamerFox7272fromYT
    @GoldenGamerFox7272fromYT 4 года назад +176

    me: **moving frame by frame at **2:29** and seeing 59 instantly become 313,979** **doing the same for **3:12** and seeing 941 become 314,159,265,136** this looks so fast... gotta know how fast it was...

    • @AspectOfTheBlade
      @AspectOfTheBlade 3 года назад +8

      So true. I wanna know too. I could not even pause it between 100 and 3 hundred trillion

    • @marzipug5439
      @marzipug5439 3 года назад +2

      @@AspectOfTheBlade He literally said the rate in the video.

    • @xxromerocksxx2889
      @xxromerocksxx2889 3 года назад

      literally did the same thing bruh

    • @GoldenGamerFox7272fromYT
      @GoldenGamerFox7272fromYT 3 года назад

      @Fernando García salazar i already knew that

    • @BritishEngineer
      @BritishEngineer 3 года назад +4

      Unfortunately it will be faster than the frame rate of the video. You would need a 314 million fps youtube viewer

  • @aa0000
    @aa0000 4 года назад +19

    3:58
    I like this representation of how this is just theoretical, not practical.
    Creative.

  • @CanadaGovernment785
    @CanadaGovernment785 3 месяца назад

    This is so cool bro I am amazed by this

  • @markjoshua268
    @markjoshua268 Год назад

    This is mind blowing.

  • @basimansari6759
    @basimansari6759 2 года назад +480

    As a 6th grader, I don't understand the terms you use in your video but I so much hope to learn them throughout my coming years. I find your videos very intriguing, keep up the amazing work!

    • @PritamDavis
      @PritamDavis Год назад +90

      Keep being curious bro😎🔥

    • @e2532e
      @e2532e Год назад +82

      @@PritamDavis until being killed by the education system of the country

    • @PritamDavis
      @PritamDavis Год назад +28

      @@e2532e agreed bro.. it really sucks at times

    • @rajan8516
      @rajan8516 Год назад +6

      @@e2532e well 😔

    • @silverseacow
      @silverseacow Год назад +6

      @@PritamDavis im 7th grade rn

  • @juliangoulette7600
    @juliangoulette7600 4 года назад +42

    Perhaps you could set up analogous situations for any other base:
    0. You have two blocks with masses of 1 and b^2^(d-1), where b is the base of the number system and d is the number of digits in that base you want to compute.
    1. Count the number of collisions in that base.
    2. You now have an approximation of pi*b^(d-1) in that base.

  • @suzuki_aoharu
    @suzuki_aoharu Год назад

    3 years after this video is published, I discovered something(not sure if anyone found this out before)
    I think the number of collisions
    =Pi*sqrt(ratio of the mass of the block on the left to that on the right)

  • @siddharthannandhakumar6187
    @siddharthannandhakumar6187 Год назад

    This is the most satisfying video of 3b1b😁... Btw did I fail to hear an ultrasonic frequency sound @3:44?

  • @somebodylikesbacon1960
    @somebodylikesbacon1960 5 лет назад +83

    3:43 The sound of my brain figuring out the puzzle.

    • @RPDC-ng8ej
      @RPDC-ng8ej 3 года назад +1

      100,000,000,000_000,000,000_000,000,000_000,000,000 (10^38) (100 tripodecillion)

  • @lezhilo772
    @lezhilo772 5 лет назад +258

    Solved :D
    The circle in question is a circle in the momentum phase space. Specifically say m2 is the heavier block, if you rescale the momentum variable p1 and p2 by sqrt{m}, then you have a very nice circle equation. The entire process amounts to turning by angle pi from the point (p1,p2)=(0,1) to (0,-1) so that the heavier block is reflected.
    Every collision between the two blocks can be written down as a mapping between points on the circle in the phase space(ie old momentum determining new momentum completely, while obeying energy conservation so staying on the circle). Every collision at the wall serves to reflect the point about the p2 axis so that the direction of p1 is flipped. Every step leaves a point on the circle, and each point corresponds to a click sound. So the total number of points on the circle(minus the starting point) is the same as the total number of clicks heard.
    Since all collisions between two blocks is followed by a collision at the wall, we can consider these two events forming a single step. It turns out that as the ratio r=m1/m2 gets smaller, this step approaches an infinitesimal rotation generator, with each step’s rotation angle being 2sqrt{r}. If we let k to be the number of rotation steps to execute the full pi angle rotation from (1,0) to (0,1), then 2sqrt{r}=\pi/k, or 2k=\pi/\sqrt{r}. We identify 2k as the total number of points on the circle(involving both the rotation and the reflection, thats why there’s a factor of 2), then if sqrt{r} is 10^-2n, we have 2k=\pi * 10^n, which is exactly what we have.
    The only thing left is the round off but I need my beauty sleep now XD. Can’t wait to see Grant’s solution and animations! :D

    • @coconutflour9868
      @coconutflour9868 5 лет назад +13

      That would only be the case if the sum of the squares of the momenta (p1^2 + p2^2) is conserved, which is not the case. Conservation of energy demands that p1^2/m1 + p2^2/m2 is conserved, which is the same as what you tried only if the masses are equal

    • @sauravchauhan4172
      @sauravchauhan4172 5 лет назад +1

      Energy is also conserved here

    • @coconutflour9868
      @coconutflour9868 5 лет назад

      @@sauravchauhan4172 How so?

    • @sauravchauhan4172
      @sauravchauhan4172 5 лет назад +7

      @@coconutflour9868 he said that in the video too , energy is also conserved , and I think circle is not the solution, it can be an ellipse also. Maybe wrong

    • @lezhilo772
      @lezhilo772 5 лет назад +7

      @@coconutflour9868 I rescaled the momentum variable by 1/sqrt(m). That means given old p^2/m, I define P=p/sqrt{m}. The conservation of energy equation p1^2/m1+p2^2/m2=E then becomes P1^2+P2^2=E. If we use the rescaled momentum variables as the axis of the phase space, then states of constant energy form a circle.

  • @deebambi5567
    @deebambi5567 4 месяца назад +1

    5 years and I am still waiting on Matt Parker to use this method on pi-day

  • @hanh3000
    @hanh3000 2 месяца назад

    My 10 year old son showed me this video. It stunned both of us.

  • @PriyabrataHalder
    @PriyabrataHalder 4 года назад +605

    2:30 when superman passes his time doing maths.

    • @paglobal
      @paglobal 3 года назад +9

      Was about to comment something like this😂

    • @user-ov2fc5sd1e
      @user-ov2fc5sd1e 3 года назад +4

      I don't get it.
      Yes I'm not the sharpest tool in the shed

    • @examination4088
      @examination4088 3 года назад +11

      @@user-ov2fc5sd1e henry cavil plays superman in the dceu

    • @the4spaceconstantstetraqua886
      @the4spaceconstantstetraqua886 3 года назад +1

      @@user-ov2fc5sd1e The Big Mass?

    • @dulearning8256
      @dulearning8256 3 года назад

      @@user-ov2fc5sd1e the youtuber says henry cavil lol henry cavil is the actor name for superman movie

  • @revan1139
    @revan1139 5 лет назад +11

    1:50 wait for it.... WAIT FOR IT...
    love it

  • @WRONGCHANNEL431
    @WRONGCHANNEL431 Год назад

    This is the greatest video I’ve ever seen

  • @kauboy9816
    @kauboy9816 4 года назад +57

    I was watching this from the preview, and I would swear the counter of "314 clacks" hit exactly at 3:14 left in the video. Well done.

    • @h3xty
      @h3xty 4 года назад +2

      @@RIPToot it was, it says 3:14 *left*

    • @DavidG2P
      @DavidG2P 4 года назад

      This channel is of suprahuman intelligence

    • @ojasvikamra6835
      @ojasvikamra6835 4 года назад +2

      At 1:58 if youre curious

  • @dustinsanders5780
    @dustinsanders5780 4 года назад +367

    3Blue1Brown: "We have 2 sliding blocks and a wall"
    Me: "I'm sorry could you repeat that, I'm already lost."

  • @jayrony69
    @jayrony69 7 месяцев назад +3

    Can you link he program used to run the simulaton

  • @Mark-jt5cs
    @Mark-jt5cs 6 месяцев назад

    This channel should be called: 3.142 Blue 1 Brown

  • @an9em0n
    @an9em0n 3 года назад +80

    So, Superman shared this with you? 🤯
    Then this is actual kryptonian knowledge