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Fitting a Cube Through a Copy of Itself | Rupert's Cube |

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  • Опубліковано 2 гру 2017
  • I'm back :)
    Don't really know what to say. Just enjoy the video and let me know what you think of it:)
    _________________________________________________________________
    Support me at:
    / think_twice
    _________________________________________________________________
    Any further questions or ideas:
    Email - thinktwiceask@gmail.com
    Twitter - / thinktwice2580
    _________________________________________________________________
    Overall render time: ~ 8 hours
    Programs used:
    - Cinema 4D
    - Adobe Premiere Pro
    _________________________________________________________________
    Music from Anime: Death Parade
    • Most Emotional OST - M...

КОМЕНТАРІ • 766

  • @ThinkTwiceLtu
    @ThinkTwiceLtu  6 років тому +2039

    By the way, the largest possible shadow is shaped like a regular hexagon but the shadow in my animation is kind of irregular. My bad.
    UPDATE:
    some people are not so sure if this would be possible in real world, because there are some parts of the cube clipping through another one. However that is just an error I made while animating the movements of the cube, in reality there is enough space to even fit a slightly larger cube through. You can see the math and history behind it here: en.wikipedia.org/wiki/Prince_Rupert%27s_cube
    Hope this clears things up

    • @SniffySnoffy
      @SniffySnoffy 6 років тому +38

      Think Twice close enough bro

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому +24

      A. Valentine hmm im not sure, it was probably just my error in animating because I set up that scene by hand so the placement was not perfect.

    • @guilhermegondin151
      @guilhermegondin151 6 років тому +1

      Think three times for this one then kkkkkk

    • @qwakyyy
      @qwakyyy 6 років тому +4

      You're a genius!

    • @guilhermegondin151
      @guilhermegondin151 6 років тому +2

      ๖ۣۜLǝgiƬkɨłłzᎵrσ『ђeяø』 If not just by the mathematics, he is for the animations.

  • @Andrew..J
    @Andrew..J 6 років тому +307

    My engineering professor on day 1 asked us this. We all said of course it was impossible. The he shows us this example using two wooden blocks and said "dont be afraid to think unconventionally, you'll never have a revolution doing the same thing that's always been done"

    • @HandledToaster2
      @HandledToaster2 5 років тому +16

      That professor? Albert Einstein.

    • @JorgetePanete
      @JorgetePanete 5 років тому

      don't*

    • @nilaksh007
      @nilaksh007 5 років тому +5

      @@HandledToaster2 yeah as if only einstein has the right to be intelligent.

    • @waylonpark2340
      @waylonpark2340 4 роки тому

      Then You Are Lucky

    • @ChazCharlie1
      @ChazCharlie1 3 роки тому

      Probably the problem with how both he and this video pose the question. Asking it in a certain way can immediately imply a lot of restrictions. For example, the first hole cut in this video implied the cut can only be made in to one face and out the opposite face, not though all 6 faces as the final solution showed.

  • @justanedit001
    @justanedit001 6 років тому +1292

    This makes more sense than the video showing a sphere that can turn inside out.

    • @chromosoze
      @chromosoze 6 років тому +6

      lol

    • @RoboEpic
      @RoboEpic 6 років тому +1

      Just An Edit ikr

    • @Marina-nt6my
      @Marina-nt6my 6 років тому +50

      You mean it's a lot simpler and easier to understand

    • @marcosteinke
      @marcosteinke 6 років тому +26

      Because you can pinch this one here infinitely tight. Makes shit a lot easier...

    • @CorruptedMaterial
      @CorruptedMaterial 6 років тому +53

      Because this one actually makes sense and is not dpendant on impossible physics

  • @Dylan-go5iv
    @Dylan-go5iv 6 років тому +645

    Very interesting concept. I feel slightly annoyed that at the beginning it was asking if the light cube could fit through the dark cube but at the end it put the dark cube through the light cube lol

  • @n484l3iehugtil
    @n484l3iehugtil 6 років тому +923

    If I were the white cube, I would feel very violated. Having such a large hole bored into you, that huge chunk of yourself taken away, and then another guy comes and fits themself right in there.
    Eurgh.

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому +108

      Billy Ma-gusta life is life

    • @maerski5171
      @maerski5171 6 років тому +14

      Nah, the other cube was just a copy of itself

    • @Husqy
      @Husqy 6 років тому +8

      God that is..... Wow

    • @guy3nder529
      @guy3nder529 6 років тому +22

      welcome to googling porn

    • @shiinamashiro2021
      @shiinamashiro2021 6 років тому +34

      Big black cube (BBC)

  • @demacrojira7829
    @demacrojira7829 6 років тому +470

    I am now woke.

    • @sc-ek6qz
      @sc-ek6qz 6 років тому +2

      That is one sexy jiggly puff...😂

    • @paper2222
      @paper2222 6 років тому +2

      *Real shit?*

  • @dubarnik
    @dubarnik 6 років тому +102

    I've never heard of Rupert's Cube so I had no idea where you were going. When you compared shadows, I still didn't think it was possible. And Voilà! It worked. Nicely done.

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому +9

      I didn't think it was possible when I first heard the problem as well

  • @lolepopie
    @lolepopie 6 років тому +404

    Make the whole cube a hole so the other passes right through easy

    • @santtusammakko4254
      @santtusammakko4254 6 років тому +3

      :DDD

    • @TsunaXZ
      @TsunaXZ 6 років тому +2

      Pretty straight forward and simple lol

    • @vaginalarthritis1753
      @vaginalarthritis1753 4 роки тому +1

      It still wouldn't fit though. Since they're identical, the edges would be aligned and a hold of the same dimensions would just stop it there.

    • @OrigamiAhsoka
      @OrigamiAhsoka 2 роки тому

      Smort

  • @joefreeman3772
    @joefreeman3772 4 роки тому +20

    Rupert was like: "Forget thinking outside the box, I'm thinking right through it !"

  • @Twas-RightHere
    @Twas-RightHere 6 років тому +19

    When you first presented the question I was like 'wtf absolutely no way', then as soon as the cubes started rotating at 0:37 and I was looking down at the point of the cube, the solution came to me. Very neat trick!

  • @CasualGraph
    @CasualGraph 6 років тому +221

    And that, son, is where octahedra come from.

    • @AlterraCorp
      @AlterraCorp 6 років тому +3

      I. N E E D. T O. B L E A C H. M Y. E Y E S

    • @glados2788
      @glados2788 6 років тому

      Casual Graphman HAIL HEDRA

  • @realSOnoYa
    @realSOnoYa 6 років тому +73

    What a tragic story about a kindred spirit who just wanted to fit in but needs to mutilate themself to do so. Sosad. Icryevrytim.

  • @Don1sir
    @Don1sir 6 років тому +67

    *gray cube has obtained silver armor*

  • @redsalmon9966
    @redsalmon9966 6 років тому +495

    Yes I was right.
    At first I have no idea. Then I remembered a problem which is: how can a person pass through a small piece of paper. The solution is cut it a specific way so The it makes a large hole.

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому +31

      Great thinking, well done

    • @MatthewFearnley
      @MatthewFearnley 6 років тому +16

      Roman Neill Basically, cut out a shape with a very large perimeter (e.g. a very spiky star with lots of points), then cut out the interior of that shape, leaving just a thin outline. Then you can stretch that outline apart as far as the perimeter will allow you, and step through it.

    • @rwrunning1813
      @rwrunning1813 6 років тому +1

      Red Salmon Holy crap, I remember that from elementary school aaaaaaaaa!

    • @redsalmon9966
      @redsalmon9966 6 років тому +4

      Roman Neill
      Because that piece of paper is significantly smaller than a person, cutting it in a “normal” way will never get you through the hole

    • @Nothing-ce8uv
      @Nothing-ce8uv 6 років тому

      Red Salmon i figured it out but how does your “solution” explain anything lol

  • @lukalukunic2820
    @lukalukunic2820 6 років тому +13

    0:19 - gone sexual

  • @Patapom3
    @Patapom3 6 років тому +33

    Congrats! Must have been a pain in the ass to compute that geometric intersection! ^_^

    • @davidbischi
      @davidbischi 6 років тому +2

      Patrick Apom 2 mins of CAD editing and voila that geometry is done and exported into an animation programm

  • @otesunki
    @otesunki 6 років тому +14

    Me:uhh
    My math brain: it's on to you topology.
    My topology brain: uhh, uhh
    My topology brain:WAIT A MINUTE!
    My Topology brain: If I cut a cube when it's on its left edge then I get a bit of cube on the left and right! So therefore I need to cut the cube at an angle where the left and top edges are fully visible witch means that I need to cut it from the corner!
    My Math brain:(That Explanation took 5 years)
    My Math brain:I need to cut it from the corner!
    My common sense brain: you could have looked at the shadows...
    My Math and topology brains:Oh...
    Me:Why did I take that long?

    • @randomguy-mx3dn
      @randomguy-mx3dn 5 років тому

      Pro Odermonicon rip to your brain

    • @Theraot
      @Theraot 5 років тому

      @@randomguy-mx3dn which one?

  • @imaducky2617
    @imaducky2617 6 років тому +2

    this is actually so simple but so ingenious

  • @elijahtalbot1149
    @elijahtalbot1149 6 років тому

    Oh, science and math, you never cease to amaze me.

  • @avahackett2694
    @avahackett2694 6 років тому +2

    "I must go through you, brother." "Oh, ok."

  • @meh1672
    @meh1672 6 років тому +13

    Math is beautiful...

  • @rexor8527
    @rexor8527 6 років тому +52

    I guess that makes sense... but wouldn’t parts of the white cube essentially need to be infinitely thin to allow this? That means to have this in the real world you would ether need to make the white cube an undetectable amount larger than the other cube, or have it bulge at those points, otherwise the cube would be cut apart before the other cube would be able to fit through it...

    • @karrotsrkool
      @karrotsrkool 6 років тому +17

      Indeed, and if we are allowing infinitely thin sections of the outer cube then you can just cut straight through the centre as is shown at the beginning. If you actually do the maths it's not even going through the cube as it occupies the same space so the whole video is really a lie.

    • @plutoniumfish8368
      @plutoniumfish8368 6 років тому +71

      No, there is actually a bit of wiggle room that's kind of hard to see. You could actually cut a hole to fit a cube that is 6% larger and it will still remain one piece.

    • @nolin132
      @nolin132 6 років тому +7

      You all are assuming that the width of the rotated white cube is exactly 1, smh.
      Miles L. is right, this isn't a prefect cut.

    • @andywright8803
      @andywright8803 6 років тому +1

      Jeremy Shuler If it can be done with a real cube, surely that would be more convincing

    • @BennyMKW
      @BennyMKW 6 років тому +6

      Andy Wright ua-cam.com/video/e3-Ta9DF4Cg/v-deo.html that wasnt too hard was it lol

  • @noneuclidean_
    @noneuclidean_ 6 років тому +7

    Nice choice of music! I knew I recognized it from somewhere...

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому +3

      Herobrine . thanks, took me a while to find it..

    • @williamphillips3550
      @williamphillips3550 6 років тому +2

      Moonlit Night from the anime Death Parade

  • @CarlosVargas-oo6gn
    @CarlosVargas-oo6gn 6 років тому +6

    200 IQ Fortnite plays

  • @suwapete9761
    @suwapete9761 5 років тому

    underrated channel, by a lot, these videos are so calm and relaxing while also being intriguing and thought provoking, you're channel is amazing

  • @sabereaseera1384
    @sabereaseera1384 6 років тому +1

    The making of love is truly beautiful

  • @duckmaneuvers
    @duckmaneuvers 6 років тому +4

    *when turning a sphere inside out isn't enough*

  • @welmoe
    @welmoe 6 років тому +1

    Thank you Think Twice, very cool!

  • @paithanq
    @paithanq 6 років тому +7

    So great! I love all of these!

  • @madsplougjepsen4544
    @madsplougjepsen4544 6 років тому +1

    now, that's science!

  • @jackozeehakkjuz
    @jackozeehakkjuz 6 років тому +11

    I was going to skip a lot of this video, but the music stopped me from doing so.
    Thanks.

    • @SoumilSahu
      @SoumilSahu 5 років тому +1

      It's just 2 mins tho...

  • @edwinrobert7192
    @edwinrobert7192 6 років тому

    Job interviewer: so what can you do?
    Me:

  • @mrduuud
    @mrduuud 4 роки тому

    Amazing and elegant

  • @realdeal5712
    @realdeal5712 6 років тому

    Oh thats think outside of the box for sure. No one expect to cut a hole from angle. Good work btw

  • @happyfakeboulder644
    @happyfakeboulder644 6 років тому

    THAT IS GENIUS

  • @robert4598
    @robert4598 6 років тому +1

    Perfection.

  • @raghavnandyal1518
    @raghavnandyal1518 6 років тому +1

    Excellent choice of music. I love that ost.

  • @reiniertl
    @reiniertl 4 роки тому

    One day I will make a metal version of this, "a very cool toy". Although I will probably need three cubes and special tooling to make it. Cutting that hole in a cube is not easy task and having the hole filled is what makes all the fun if this is going to be a toy.

  • @shilohschwartz8671
    @shilohschwartz8671 6 років тому +1

    My mind is blown. Thank you!

  • @tszhanglau5747
    @tszhanglau5747 4 роки тому

    Instead of making the white cube 'smaller',you removed a huge chunk from it so the grey block can pass through it. Genius
    /s

  • @zeth6631
    @zeth6631 6 років тому

    thats clever, a bit of logical thinking mixed with math, amazing

  • @anujnagpal18
    @anujnagpal18 5 років тому

    Magnificent!

  • @megatronn5816
    @megatronn5816 6 років тому

    That was mind blowing

  • @potatooflife8603
    @potatooflife8603 6 років тому

    This is art.

  • @rex7579
    @rex7579 6 років тому

    Ok, now this is epic

  • @xCorvus7x
    @xCorvus7x 6 років тому

    Thank you for reminding and showing me to think outside the box.

  • @RafaelBarrientos
    @RafaelBarrientos 6 років тому +1

    Fabulso!!! Impresionante!!! Maravilloso, gracias por compartir

  • @killyourbunny
    @killyourbunny 6 років тому

    Absolute madman

  • @Professor_Utonium_
    @Professor_Utonium_ 6 років тому

    This wouldn't work because if all sides of both cubes are equal, you would just end up with what are essentially the "leftovers" of cutting out enough space for the other cube to fit through. Being the exact same size, there would be nothing left connecting the additional pieces left by making the hole. In addition, a shadow changes the area it covers depending on where the light it positioned.

  • @rodmakestuff8288
    @rodmakestuff8288 6 років тому

    Mind blown 🤯!!!!!!!!!

  • @arshadsiddiqui9071
    @arshadsiddiqui9071 6 років тому

    So bootiful

  • @jwust1n
    @jwust1n 6 років тому +1

    Better love story than Twilight.

  • @mihailazar2487
    @mihailazar2487 6 років тому +1

    00:15 YES ! turn the cube so a corner is facing you and the outline is a perfect hexagon
    Now cut a square hole into it
    that's it

  • @jeremiahpeter8891
    @jeremiahpeter8891 6 років тому

    GENIUS.

  • @onewish6023
    @onewish6023 2 роки тому

    im looping this and good night!!

  • @nsimba_777
    @nsimba_777 6 років тому +1

    That just blew my mind

  • @cathyshepard253
    @cathyshepard253 6 років тому +1

    That Death Parade music though. Good choice.

  • @MatthewFearnley
    @MatthewFearnley 6 років тому +1

    Does the hole fit exactly inside the cube (with the remaining parts just touching edges), or is there a there a “finitesimal” margin of error? It’s hard to tell.

  • @yassslayqueen6620
    @yassslayqueen6620 6 років тому

    The animation moves like surreal entertainment

  • @d.wu07
    @d.wu07 6 років тому

    This video is therapeutic

  • @marvinperez1297
    @marvinperez1297 6 років тому

    That's pretty neat.

  • @rhiannonbauer6787
    @rhiannonbauer6787 6 років тому +1

    I kinda felt like I wanted to give a standing ovation at the end lol! Never had a video that did that to me before. Maybe it was the music?

  • @monicanagaraj1828
    @monicanagaraj1828 5 років тому

    I started loving your videos 💖💖💖

  • @NinoM4sterChannel
    @NinoM4sterChannel 6 років тому

    okay, that was quite surprising!!

  • @user-sc5dy6ur2h
    @user-sc5dy6ur2h 3 роки тому

    It's beautiful

  • @-homechord-2908
    @-homechord-2908 5 років тому

    That's awesome omg

  • @crackerjaq9974
    @crackerjaq9974 Рік тому

    When you spawn 2 cubes in Gmod but you spawned them too fast so now they're clipping into each other

  • @SlowSush
    @SlowSush 6 років тому

    Wow fits just like a cube...

  • @ohboy1113
    @ohboy1113 3 роки тому +1

    I didn’t even know this was a question you could ask. Genius is more asking the right questions than it is solving them.

  • @JannikGetsPanic
    @JannikGetsPanic 6 років тому +1

    This is amazing

  • @SuperXxMarcosxX
    @SuperXxMarcosxX 6 років тому

    This reminds me of the times I would draw a cube in class because I was bored. Then blinking repeatedly until the cube seemed to move.

  • @satyapal8594
    @satyapal8594 4 роки тому

    You are so genius.

  • @john34261
    @john34261 6 років тому

    at the opening when the middle of the brownish black one i thought the white could could potentially move through that hole if it were made thiner and longer and we know a copy of itself doesn't necessarily mean we're going through it like this way we're just going to thin it out to the size of the hole of the beginning though this video shows a way todo so

  • @user-pi1rn9hd6k
    @user-pi1rn9hd6k 6 років тому

    Very nice. The graphic design is amazing.
    Your videos make COMPLEX things EASY to understand. I love your chanel. Ty
    Tamir. Israel.

  • @soham5381
    @soham5381 6 років тому +1

    "MindBlown™️"

  • @CoilinIreland
    @CoilinIreland 6 років тому

    11PM: just one more video before bed
    3AM:

  • @JonMW
    @JonMW 6 років тому

    Any machinists who have got the chops to make this? Those sharp internal corners and clamping it without folding it in half would certainly make it challenging.
    No 3d printing. Metal only!

  • @guapdoctor4534
    @guapdoctor4534 6 років тому +1

    And that, boys and girls, is how babies are made.

  • @anbrozin9444
    @anbrozin9444 6 років тому

    Mind Blown

  • @dylanparker130
    @dylanparker130 Рік тому

    Beautiful

  • @nobody6317
    @nobody6317 6 років тому +1

    I knew it and nice video

  • @Dr10na1995
    @Dr10na1995 6 років тому

    Subscribed. Great animation, very cool aproach via projection! Thank you for your work :)

  • @MechanicsStudents
    @MechanicsStudents 6 років тому

    This is like a geometry teacher's dad joke.

  • @victorvas3864
    @victorvas3864 6 років тому +1

    WHOW !!!! it was slightly interesting

  • @Scull
    @Scull 6 років тому

    well that was easy to follow!

  • @AJLord
    @AJLord 6 років тому

    This could be easily reworked into a surreal meme.

  • @Nyxiro
    @Nyxiro 6 років тому

    That’s a sharp bend

  • @randomboi8218
    @randomboi8218 6 років тому +1

    My brain is fried

  • @Paul-A01
    @Paul-A01 6 років тому

    I don't know how, but one day, I will use this knowledge.

  • @davidsirmons
    @davidsirmons 6 років тому

    Turning the "move" cube about 45 degrees on one axis would all much more material for the "passed-through" cube to remain.

  • @serendipitoussimon7927
    @serendipitoussimon7927 3 роки тому

    i’ve always pondered the thought of this: a square fitting in the same dimensions, and i would always think that you’d make a hole as big as you can get without erasing the borders entirely. i thought maybe you could squeeze it in afterwards to fit it inside with a big enough hole but would it be the same dimensions at that point?

  • @BlackOldDragon
    @BlackOldDragon 6 років тому

    Would the result be the same if we tried to do this with 4d cubes with 3d shadows?

  • @subiektywizmfilozoficzny1361
    @subiektywizmfilozoficzny1361 3 роки тому

    Just imagine a set of such cubes passing through each other. I'm also curious how it works with other figures, which figures have this property, and also whether these properties have some utility.

  • @mueanukdahan6995
    @mueanukdahan6995 3 роки тому

    Wow, this is very and very interesting for me.

  • @kettlefish9313
    @kettlefish9313 6 років тому +1

    Hell yeah

  • @madhatter8167
    @madhatter8167 6 років тому

    This is pretty damn clever

  • @spicerice8116
    @spicerice8116 6 років тому +3

    Why is the FBI at my house

    • @carlostdied1184
      @carlostdied1184 6 років тому

      loli cubes are the new hip genre of porn didn't u know?

    • @spicerice8116
      @spicerice8116 6 років тому

      carlost died sorry I haven't been updated in the new trends. This closet I'm in is pretty isolated

    • @carlostdied1184
      @carlostdied1184 6 років тому

      the rock i'm dwelling under is pretty big too man don't sweat it

    • @spicerice8116
      @spicerice8116 6 років тому

      carlost died thx m8

  • @kingrojin7692
    @kingrojin7692 6 років тому

    This new cube fetish seems pretty cool

  • @amj.composer
    @amj.composer 6 років тому

    I'm glad, I figured it out instantly.

  • @OliverTheAmpersandCat
    @OliverTheAmpersandCat 3 роки тому +1

    WHY DID THE BLACK ONE GO THROUGH THE WHITE ONE
    I WANTED THE WHITE ONE TO GO THROUGH THE BLACK ONE :0
    nice vid btw