Cavalieri's Principle in 3D | Volume of a sphere |

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  • เผยแพร่เมื่อ 5 ก.ย. 2024
  • To improve your problem solving skills, go to: brilliant.org/...
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    Finding an equation for the volume of a sphere using Cavalieri's Principle ( assuming we already know the equation for the volume of a cone)
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    Support my animations on:
    / think_twice
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    Any further questions or ideas:
    Email - thinktwiceask@gmail.com
    Twitter - / thinktwice2580
    _________________________________________________________________
    Programs used:
    - Cinema 4D
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    Music:
    " [[FREE]] LoFi Type Beat - "4 am" "
    • [[FREE]] LoFi Type Bea...

ความคิดเห็น • 216

  • @skiggywiggy8386
    @skiggywiggy8386 3 ปีที่แล้ว +21

    Ah! I finally understand how they came up with that. Understanding why the formulas work makes math more fun

  • @dareleven
    @dareleven 6 ปีที่แล้ว +12

    wow it's unimaginable how animation can be way more effective in conveying complex ideas such as this compared to teaching with merely words, numbers, and drawings alone. I really hope one day I could learn animation too!

  • @conoroneill8067
    @conoroneill8067 6 ปีที่แล้ว +200

    Hmmm... Is there an explanation for where the formula for a cone comes from? Everything else is great!

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 ปีที่แล้ว +344

      In this video I assumed that we already know the formula for the volume of a cone, however it can also be found using Cavalieri's principle.
      if anyone is interested i can make a follow up video on how to find the volume of a cone.

    • @kingkeroro2525
      @kingkeroro2525 6 ปีที่แล้ว +56

      yes please!

    • @NoNameAtAll2
      @NoNameAtAll2 6 ปีที่แล้ว +10

      @@ThinkTwiceLtu yes, would be great

    • @beenaalavudheen4343
      @beenaalavudheen4343 6 ปีที่แล้ว +6

      Yes please!

    • @denisfuryaev8166
      @denisfuryaev8166 6 ปีที่แล้ว +5

      We want

  • @JustMe-ui9bv
    @JustMe-ui9bv 6 ปีที่แล้ว +45

    It's fricking beautiful! I love this content.

  • @46pi26
    @46pi26 6 ปีที่แล้ว +103

    Does this suffice as a rigorous proof of the statement that math=art?

    • @ineedken5400
      @ineedken5400 6 ปีที่แล้ว +14

      I am so with you on that statement! Math needs to be taught creatively, not this BS that has been going on for centuries.

    • @Joffrerap
      @Joffrerap 5 ปีที่แล้ว +17

      rigurously, it's more like math ∈ art.

    •  2 ปีที่แล้ว +3

      @@Joffrerap Nah, it just shows that math and art have a non-empty intersection.

  • @avocadosauce6840
    @avocadosauce6840 6 ปีที่แล้ว +88

    PLEASE do a video on the Taylor series.

    • @farisakmal2722
      @farisakmal2722 6 ปีที่แล้ว +1

      I second that

    • @devanshgarg31
      @devanshgarg31 6 ปีที่แล้ว +1

      Yep

    • @natasadjurdjevic3533
      @natasadjurdjevic3533 6 ปีที่แล้ว +8

      3blue1brown has a great video about it

    • @Saltofreak123
      @Saltofreak123 6 ปีที่แล้ว +7

      i think i found a way to show the intuition behind the taylor series, now only need to get good at animating. working on it right now :P

    • @adrianhdz138
      @adrianhdz138 6 ปีที่แล้ว +1

      Avocado Sauce Why did I think of Taylor Swift when I read this?

  • @michaelren8110
    @michaelren8110 6 ปีที่แล้ว +37

    spectacular video

  • @DarkLightning96
    @DarkLightning96 5 ปีที่แล้ว +4

    Found this channel a couple of days ago and it's already one of my favorites. Really shows how beautiful maths can be :)

  • @mr.mathbook1412
    @mr.mathbook1412 5 ปีที่แล้ว +4

    It is good to see that mathematics in the high level,easy to understand for students and also understand math very deeply .Thank you for such this chanel ,keep going on.

  • @djb903
    @djb903 6 ปีที่แล้ว +21

    Very smooth! Subbed instantly

  • @dominicjung4950
    @dominicjung4950 4 ปีที่แล้ว +2

    I've also known this method for many years. But out of many many ways of proving the volume of sphere this is without a doubt the most elegant and beautiful way in my opinion! :D

  • @faith3174
    @faith3174 6 ปีที่แล้ว

    i've seen so many proofs for the volume of a sphere but this here has to be one of the most elegant proofs ever. great job!

  • @seanwrfps
    @seanwrfps 5 ปีที่แล้ว +3

    wow, the animation is so clean and crispy. nice job!

  • @nicuradu911
    @nicuradu911 6 ปีที่แล้ว +12

    Made my day! Content quality

  • @farisakmal2722
    @farisakmal2722 6 ปีที่แล้ว +8

    THINK TWICE, I MISSED YOU...
    BRILLIANT WHY DO YOU HAVE TO MOLEST SUCH A CUTE CHANNEL

    • @columbus8myhw
      @columbus8myhw 6 ปีที่แล้ว +4

      Channels _want_ sponsors.

    • @mather468
      @mather468 6 ปีที่แล้ว +5

      @Gabe Catalfo What the fuck is that comparison? What does it have to do with the sponsorship relation?

  • @azialifaziz6652
    @azialifaziz6652 6 ปีที่แล้ว +3

    It's great to see this Chanel getting sponsorship!

  • @dnickaroo3574
    @dnickaroo3574 ปีที่แล้ว

    These animations which derive formulae visually are very helpful.

  • @PaulFisher
    @PaulFisher 3 ปีที่แล้ว

    This also indirectly shows another cool circle thing, which is that if you have two circles with the same center (a flat donut, like your cone and cylinder), and you take the distance from the inner circle to the outer circle along a line tangent to the inner circle, and make a new circle with that radius, the area of that circle will be the same as the area of the flat donut. Or, to put it in the terms of the Car Talk puzzler where I originally learnt this, if you measure a carousel from edge to edge with a line that just meets the inner hole, it will take the same amount of paint to cover the deck of the carousel as it would a circle with that diameter.

  • @theskycuber4213
    @theskycuber4213 6 ปีที่แล้ว +1

    There should be a double like button on TH-cam, extremely elegant explanation.

  • @quahntasy
    @quahntasy 6 ปีที่แล้ว +6

    Such a spectacular video, please do one on Taylor series.

  • @deepakvyavahare7436
    @deepakvyavahare7436 6 ปีที่แล้ว +6

    Please keep posting I’m a math enthusiast and I adore these videos.

  • @MagicGonads
    @MagicGonads 6 ปีที่แล้ว +6

    It only makes sense to me if the principal is that = cross sections on the same bounded height => equal volumes but not the converse. IE equal volumes does not necessarily imply that the cross sections are always equal when bounded by the same height.
    Which is what you said.
    But when I first watched this video I for some reason read it the other way, and had a bit of a debate to myself, oops.

    • @pedronunes3063
      @pedronunes3063 6 ปีที่แล้ว

      Yes, example a paralelopipedid (I don't know if I wrote it right) with volume 1

    • @antoniolewis1016
      @antoniolewis1016 6 ปีที่แล้ว +2

      Glad it makes sense to you! You are correct that shapes with equal volumes may have different areas at cross section, but if they have equal areas at all cross sections, then their volume will be equal.

  • @Goku17yen
    @Goku17yen 5 ปีที่แล้ว +2

    Here from Flammy!! Love the ambient atmosphere you create lol :D

  • @rajeevaggarwal2937
    @rajeevaggarwal2937 5 ปีที่แล้ว

    Your videos change my underrstanding about formulas and derivation

  • @iVideoCommenter
    @iVideoCommenter 6 ปีที่แล้ว +1

    ThinkTwice and 3B1B. Leaders in Visual Mathematics! :)

  • @6lbs._onion
    @6lbs._onion 6 ปีที่แล้ว +14

    Great visualized explanation as always! :^D
    I wish they teaches these back when I was still in school...
    Blindly memorizing the formula? More like "you'd better shove these pile of symbols down your throat, without us explaining it thoroughly why it is like that then vomit it out on the test or else you won't get past jr.high" memorize... x]
    Where I live... Let's just say the education system is *very* underdeveloped and extremely outdated...

    • @rastafarayy
      @rastafarayy 6 ปีที่แล้ว +1

      Cavalieri is older then the way we do integrals now

  • @maxng7916
    @maxng7916 4 ปีที่แล้ว

    This is getting better than mindyourdecisions.

  • @illumilenny8543
    @illumilenny8543 6 ปีที่แล้ว +1

    Simple, beautiful, to the point. This is quality content.

  • @DerAlfredman
    @DerAlfredman 5 ปีที่แล้ว +1

    *Mind Blowing*

  • @sethbracken
    @sethbracken 6 ปีที่แล้ว

    There’s a lot to like about all your videos, but I really like the color palette you’ve stuck to.

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 ปีที่แล้ว

      Seth Bracken thank you:) Sometimes I spend an hour or more just picking the colours for the animation

  • @gentko2159
    @gentko2159 6 ปีที่แล้ว

    underrated channel for such mesmerizing content

  • @jameroth7661
    @jameroth7661 4 ปีที่แล้ว

    I'm baffled; the simplicity is magnificent. Well done.

  • @Sam_on_YouTube
    @Sam_on_YouTube 6 ปีที่แล้ว

    Personally, I like the calculus proof of that equation better because I feel it leads to a better understanding of calculis and also of why the formula looks the way it does. But this also nice.

  • @manuelhoffmann4470
    @manuelhoffmann4470 6 ปีที่แล้ว +4

    I like this. Especially the music! 😁

  • @06kokoko
    @06kokoko ปีที่แล้ว

    Holy crap…this is mind blowing

  • @rodrigo-vl7bi
    @rodrigo-vl7bi 6 ปีที่แล้ว

    Your videos are one of my favorite things on the internet, they are really awesome, thanks for making them

  • @banderfargoyl
    @banderfargoyl 6 ปีที่แล้ว

    Nicely done! I can't imagine a better way to find that formula.

  • @cyrill2357
    @cyrill2357 5 ปีที่แล้ว +1

    Well, it’s obvious that your work is frickin beautiful and very much inspiring! If you don’t mind me asking, what animation software is it that you use? I plan on using some visual representation for some school projects (:

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  5 ปีที่แล้ว

      Cyrill Thank you! I’m using processing and cinema4d for my animations. And then I just edit everything in a video editing software like adobe premiere pro

  • @deidara_8598
    @deidara_8598 6 ปีที่แล้ว +1

    "Blindly memorizing formulas", perfectly describes modern math education.

    • @ThePharphis
      @ThePharphis 6 ปีที่แล้ว

      I don't really see it, tbh. I tutor on the side and remember high school and university quite well, and very few times were we meant to just memorize stuff. There was always some aspect that aided in memory and the methodology was just as important as the answer

  • @MJMECH
    @MJMECH 4 ปีที่แล้ว

    Superb...easy way to learn

  • @rutamodelsagency
    @rutamodelsagency 5 ปีที่แล้ว

    Best math channel !!!

  • @everr.r
    @everr.r 6 ปีที่แล้ว

    absolutely beautiful. simple and efficient.

  • @liaailia4454
    @liaailia4454 8 หลายเดือนก่อน

    it's brilliant! thanks for making this vedio. it was really helpful to prepare shcool presentation!

  • @rahul7270
    @rahul7270 6 ปีที่แล้ว +2

    Yay! I'm so happy to see a notification from you! Let me watch the video now.

  • @NeilDeshpande313
    @NeilDeshpande313 3 ปีที่แล้ว

    Utterly satisfying

  • @nintendogos61
    @nintendogos61 5 ปีที่แล้ว

    Cute lil shapes💛

  • @Pedritox0953
    @Pedritox0953 5 ปีที่แล้ว

    You won a subscriber

  • @rzsny6036
    @rzsny6036 5 ปีที่แล้ว

    This is beyond satisfying

  • @elenajonikiene5999
    @elenajonikiene5999 5 ปีที่แล้ว

    Elegantiška, paprasta, gražu. Super Think twice

  • @JorgetePanete
    @JorgetePanete 6 ปีที่แล้ว +1

    i love this channel, it really help us

  • @eccentricOrange
    @eccentricOrange 5 ปีที่แล้ว

    Absolutely love it! Seen all your videos

  • @goncalosanhudodeportocarre9591
    @goncalosanhudodeportocarre9591 6 ปีที่แล้ว

    You could have kept the cone pointing up the cross section animation would be easier to understand. Still great work love the channel

  • @yamansanghavi
    @yamansanghavi 6 ปีที่แล้ว

    Mind = Blown

  • @emirkandemir58
    @emirkandemir58 3 ปีที่แล้ว

    beautiful explanation, thanks!

  • @oussamanhairech5178
    @oussamanhairech5178 6 ปีที่แล้ว +1

    Thank for this , I am really amazed

  • @CinnamonyPasteline
    @CinnamonyPasteline 4 ปีที่แล้ว +1

    I HAVE A DUMB QUIZ ON THIS TOMORROW AND I DONT KNOW ANYTHING BUT THANKS

  • @manjulata9680
    @manjulata9680 5 ปีที่แล้ว

    Your videos are best

  • @cosimobaldi03
    @cosimobaldi03 4 ปีที่แล้ว

    OHH SHEEIT NEVER REALIZED THAT BUT IT'S SO PERFECT

  • @gazalisameer4173
    @gazalisameer4173 5 ปีที่แล้ว

    I am your new subscriber. And i think your channel is so amazing i cannot describe. Please tell us which software do you use for creating these slinky animation.
    I am a mathematics teacher from india and i too use animation from adobe after effects but they are not quite amazing plus they are time consuming
    Please tells us the name of application you use

  • @lithostheory
    @lithostheory 5 ปีที่แล้ว +1

    Nice!

  • @elgeogran5485
    @elgeogran5485 5 ปีที่แล้ว

    I get nothing but I do like to watch this videos

  • @SimchaWaldman
    @SimchaWaldman 5 ปีที่แล้ว

    The more time passes, the more videos about this topic are uploaded.

  • @wenhanzhou5826
    @wenhanzhou5826 6 ปีที่แล้ว

    Wow, this was surprisingly good!

  • @damianmatma708
    @damianmatma708 4 ปีที่แล้ว +1

    01:14 I thought there is a typo in the word "hemisphere" and that there should be "semisphere".
    But "hemisphere" is also a correct word (it comes from the Greek word "hemi" which means "half" - the same as Latin word "semi").
    english.stackexchange.com/questions/416547/whats-the-difference-between-a-hemisphere-and-a-semisphere

  • @beenaalavudheen4343
    @beenaalavudheen4343 6 ปีที่แล้ว

    Great video! Hope u are feeling better now.

  • @anisbentafat8862
    @anisbentafat8862 3 ปีที่แล้ว

    I love your content and i appreciate your efforts ❤️❤️❤️❤️❤️

  • @hindigente
    @hindigente 5 ปีที่แล้ว

    Simply beautiful!

  • @tas378
    @tas378 5 ปีที่แล้ว

    This is art I love it so aesthetic

  • @HoaPham-yk5wn
    @HoaPham-yk5wn 5 ปีที่แล้ว

    very interesting. thank u

  • @anthonycannet1305
    @anthonycannet1305 4 ปีที่แล้ว

    How do we know the radius of the one is equal to its height? I’m assuming it has to do with it being made based off a hemisphere but can you show more specifically

  • @freeshavaacadooo1095
    @freeshavaacadooo1095 4 ปีที่แล้ว

    This is such simple integration, you don't even need to name this a principle, this is just common sense calculus.

  • @joseffnic3560
    @joseffnic3560 6 ปีที่แล้ว

    Super cool.

  • @basil9633
    @basil9633 ปีที่แล้ว

    W video , helped with hw

  • @randomcosmonaut8150
    @randomcosmonaut8150 5 ปีที่แล้ว

    I always wonder why the surface area of a sphere is the derivative of its volume.
    can you explain why? great visual interpretation by the way
    edit: is there any other way to get the surface area formula beside derivative?

  • @AdityaKumar-ij5ok
    @AdityaKumar-ij5ok 6 ปีที่แล้ว

    My textbook also only taught the formula for volume of sphere, without telling how it comes in first place!!
    Even I as kid of 9th standard have clear intuition of the volume of solids in between two parallel planes, I was thinking about getting it under my name😃😃, but it already existed with name of another mathematician, thanks

  • @sarikabhoir9439
    @sarikabhoir9439 6 ปีที่แล้ว

    Make a video on Bassal problem

  • @InTheBeginningTheUniverseWas
    @InTheBeginningTheUniverseWas 5 ปีที่แล้ว

    oh look another maths/science channel I'm subscribed too is sponsored by brilliant.org.
    . . . didn't see that one coming

  • @Snowflake_tv
    @Snowflake_tv 2 ปีที่แล้ว

    Great! I appreciate it.

  • @minionologyforyou301
    @minionologyforyou301 6 ปีที่แล้ว

    These videos are so great!

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 ปีที่แล้ว

      Minionology for You! thank you:)

  • @lualalsa
    @lualalsa 6 ปีที่แล้ว

    Superb.

  • @luizfelipegarcia4676
    @luizfelipegarcia4676 6 ปีที่แล้ว

    Very nice

  • @SVP-uy9qb
    @SVP-uy9qb 6 ปีที่แล้ว

    This channel is great!

  • @kaustubha7371
    @kaustubha7371 6 ปีที่แล้ว +3

    The one showed up again 💙
    What do you think about the Atiyah Riemann Hypothesis?

  • @Mayur7Garg
    @Mayur7Garg 6 ปีที่แล้ว

    People more interested in this principle should watch the video on Napkin Ring problem by Vsauce. He uses the same principle to explain the concept of a napkin ring.

  • @Yamn911
    @Yamn911 5 ปีที่แล้ว

    what program do u use for this videos , I wanna do videos like these .

  • @zergdeveloper9227
    @zergdeveloper9227 2 ปีที่แล้ว

    Thanks 👍

  • @lampofthestreet
    @lampofthestreet 6 ปีที่แล้ว

    Best channel

  • @abrarshaikh2254
    @abrarshaikh2254 6 ปีที่แล้ว

    Holly shit!!!
    I am stunned!

  • @POZZETTO-i1x
    @POZZETTO-i1x 6 ปีที่แล้ว

    another amazing video!!👏👏👏👏 keep going

  • @idrissmo418
    @idrissmo418 6 ปีที่แล้ว

    How do you make these animations?

  • @funkysagancat3295
    @funkysagancat3295 5 ปีที่แล้ว

    awesome video :) keep up with the good work!

  • @jabo5008
    @jabo5008 6 ปีที่แล้ว

    Beautiful!

  • @natasadjurdjevic3533
    @natasadjurdjevic3533 6 ปีที่แล้ว +5

    Do the cone volume

  • @ethangilchrist3534
    @ethangilchrist3534 6 ปีที่แล้ว

    These videos are amazing, you've earned that 200:1 like:dislike ratio

  • @musicalBurr
    @musicalBurr 5 ปีที่แล้ว

    Lovely!

  • @markdenversorino4136
    @markdenversorino4136 4 ปีที่แล้ว

    Nice paradox

  • @Gadget622
    @Gadget622 6 ปีที่แล้ว

    Could something similar work in higher dimensions?

  • @cavver3523
    @cavver3523 6 ปีที่แล้ว

    Pretty good!!!

  • @mithat9398
    @mithat9398 6 ปีที่แล้ว

    You have to add some approximation techniques

  • @SxB1337
    @SxB1337 6 ปีที่แล้ว

    Amazing!