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

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  • Опубликовано: 9 сен 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
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    Programs used:
    - Cinema 4D
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    Music:
    " [[FREE]] LoFi Type Beat - "4 am" "
    • [[FREE]] LoFi Type Bea...

Комментарии • 216

  • @skiggywiggy8386
    @skiggywiggy8386 3 года назад +21

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

  • @dareleven
    @dareleven 6 лет назад +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!

  • @JustMe-ui9bv
    @JustMe-ui9bv 6 лет назад +45

    It's fricking beautiful! I love this content.

  • @46pi26
    @46pi26 6 лет назад +103

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

    • @ineedken5400
      @ineedken5400 6 лет назад +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 лет назад +17

      rigurously, it's more like math ∈ art.

    •  2 года назад +3

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

  • @conoroneill8067
    @conoroneill8067 6 лет назад +200

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

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 лет назад +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 лет назад +56

      yes please!

    • @NoNameAtAll2
      @NoNameAtAll2 6 лет назад +10

      @@ThinkTwiceLtu yes, would be great

    • @beenaalavudheen4343
      @beenaalavudheen4343 6 лет назад +6

      Yes please!

    • @denisfuryaev8166
      @denisfuryaev8166 6 лет назад +5

      We want

  • @michaelren8110
    @michaelren8110 6 лет назад +37

    spectacular video

  • @avocadosauce6840
    @avocadosauce6840 6 лет назад +88

    PLEASE do a video on the Taylor series.

    • @farisakmal2722
      @farisakmal2722 6 лет назад +1

      I second that

    • @devanshgarg31
      @devanshgarg31 6 лет назад +1

      Yep

    • @natasadjurdjevic3533
      @natasadjurdjevic3533 6 лет назад +8

      3blue1brown has a great video about it

    • @Saltofreak123
      @Saltofreak123 6 лет назад +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 лет назад +1

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

  • @djb903
    @djb903 6 лет назад +21

    Very smooth! Subbed instantly

  • @DarkLightning96
    @DarkLightning96 5 лет назад +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 лет назад +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.

  • @nicuradu911
    @nicuradu911 6 лет назад +12

    Made my day! Content quality

  • @faith3174
    @faith3174 6 лет назад

    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!

  • @dominicjung4950
    @dominicjung4950 4 года назад +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

  • @seanwrfps
    @seanwrfps 5 лет назад +3

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

  • @azialifaziz6652
    @azialifaziz6652 6 лет назад +3

    It's great to see this Chanel getting sponsorship!

  • @farisakmal2722
    @farisakmal2722 6 лет назад +8

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

    • @columbus8myhw
      @columbus8myhw 6 лет назад +4

      Channels _want_ sponsors.

    • @mather468
      @mather468 6 лет назад +5

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

  • @dnickaroo3574
    @dnickaroo3574 Год назад

    These animations which derive formulae visually are very helpful.

  • @quahntasy
    @quahntasy 6 лет назад +6

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

  • @deepakvyavahare7436
    @deepakvyavahare7436 6 лет назад +6

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

  • @theskycuber4213
    @theskycuber4213 6 лет назад +1

    There should be a double like button on RUclips, extremely elegant explanation.

  • @maxng7916
    @maxng7916 4 года назад

    This is getting better than mindyourdecisions.

  • @illumilenny8543
    @illumilenny8543 6 лет назад +1

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

  • @Goku17yen
    @Goku17yen 5 лет назад +2

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

  • @MagicGonads
    @MagicGonads 6 лет назад +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 лет назад

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

    • @antoniolewis1016
      @antoniolewis1016 6 лет назад +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.

  • @rajeevaggarwal2937
    @rajeevaggarwal2937 5 лет назад

    Your videos change my underrstanding about formulas and derivation

  • @DerAlfredman
    @DerAlfredman 5 лет назад +1

    *Mind Blowing*

  • @PaulFisher
    @PaulFisher 4 года назад

    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.

  • @06kokoko
    @06kokoko Год назад

    Holy crap…this is mind blowing

  • @iVideoCommenter
    @iVideoCommenter 6 лет назад +1

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

  • @gentko2159
    @gentko2159 6 лет назад

    underrated channel for such mesmerizing content

  • @rahul7270
    @rahul7270 6 лет назад +2

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

  • @manuelhoffmann4470
    @manuelhoffmann4470 6 лет назад +4

    I like this. Especially the music! 😁

  • @jameroth7661
    @jameroth7661 4 года назад

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

  • @6lbs._onion
    @6lbs._onion 6 лет назад +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 лет назад +1

      Cavalieri is older then the way we do integrals now

  • @rutamodelsagency
    @rutamodelsagency 5 лет назад

    Best math channel !!!

  • @banderfargoyl
    @banderfargoyl 6 лет назад

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

  • @sethbracken
    @sethbracken 6 лет назад

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

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 лет назад

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

  • @rodrigo-vl7bi
    @rodrigo-vl7bi 6 лет назад

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

  • @rzsny6036
    @rzsny6036 6 лет назад

    This is beyond satisfying

  • @JorgetePanete
    @JorgetePanete 6 лет назад +1

    i love this channel, it really help us

  • @MJMECH
    @MJMECH 4 года назад

    Superb...easy way to learn

  • @nintendogos61
    @nintendogos61 5 лет назад

    Cute lil shapes💛

  • @NeilDeshpande313
    @NeilDeshpande313 3 года назад

    Utterly satisfying

  • @Sam_on_YouTube
    @Sam_on_YouTube 6 лет назад

    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.

  • @everr.r
    @everr.r 6 лет назад

    absolutely beautiful. simple and efficient.

  • @liaailia4454
    @liaailia4454 8 месяцев назад

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

  • @Pedritox0953
    @Pedritox0953 5 лет назад

    You won a subscriber

  • @eccentricOrange
    @eccentricOrange 5 лет назад

    Absolutely love it! Seen all your videos

  • @oussamanhairech5178
    @oussamanhairech5178 6 лет назад +1

    Thank for this , I am really amazed

  • @manjulata9680
    @manjulata9680 5 лет назад

    Your videos are best

  • @elgeogran5485
    @elgeogran5485 5 лет назад

    I get nothing but I do like to watch this videos

  • @lithostheory
    @lithostheory 5 лет назад +1

    Nice!

  • @elenajonikiene5999
    @elenajonikiene5999 5 лет назад

    Elegantiška, paprasta, gražu. Super Think twice

  • @emirkandemir58
    @emirkandemir58 3 года назад

    beautiful explanation, thanks!

  • @wenhanzhou5826
    @wenhanzhou5826 6 лет назад

    Wow, this was surprisingly good!

  • @cyrill2357
    @cyrill2357 5 лет назад +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 лет назад

      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 лет назад +1

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

    • @ThePharphis
      @ThePharphis 6 лет назад

      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

  • @tas378
    @tas378 5 лет назад

    This is art I love it so aesthetic

  • @Snowflake_tv
    @Snowflake_tv 2 года назад

    Great! I appreciate it.

  • @yamansanghavi
    @yamansanghavi 6 лет назад

    Mind = Blown

  • @cosimobaldi03
    @cosimobaldi03 4 года назад

    OHH SHEEIT NEVER REALIZED THAT BUT IT'S SO PERFECT

  • @SVP-uy9qb
    @SVP-uy9qb 6 лет назад

    This channel is great!

  • @hindigente
    @hindigente 5 лет назад

    Simply beautiful!

  • @anisbentafat8862
    @anisbentafat8862 3 года назад

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

  • @CinnamonyPasteline
    @CinnamonyPasteline 4 года назад +1

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

  • @joseffnic3560
    @joseffnic3560 6 лет назад

    Super cool.

  • @HoaPham-yk5wn
    @HoaPham-yk5wn 5 лет назад

    very interesting. thank u

  • @basil9633
    @basil9633 Год назад

    W video , helped with hw

  • @lampofthestreet
    @lampofthestreet 6 лет назад

    Best channel

  • @musicalBurr
    @musicalBurr 5 лет назад

    Lovely!

  • @POZZETTO-i1x
    @POZZETTO-i1x 6 лет назад

    another amazing video!!👏👏👏👏 keep going

  • @minionologyforyou301
    @minionologyforyou301 6 лет назад

    These videos are so great!

  • @kaustubha7371
    @kaustubha7371 6 лет назад +3

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

  • @luizfelipegarcia4676
    @luizfelipegarcia4676 6 лет назад

    Very nice

  • @SimchaWaldman
    @SimchaWaldman 5 лет назад

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

  • @lualalsa
    @lualalsa 6 лет назад

    Superb.

  • @zergdeveloper9227
    @zergdeveloper9227 2 года назад

    Thanks 👍

  • @funkysagancat3295
    @funkysagancat3295 5 лет назад

    awesome video :) keep up with the good work!

  • @goncalosanhudodeportocarre9591
    @goncalosanhudodeportocarre9591 6 лет назад

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

  • @jabo5008
    @jabo5008 6 лет назад

    Beautiful!

  • @freeshavaacadooo1095
    @freeshavaacadooo1095 4 года назад

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

  • @beenaalavudheen4343
    @beenaalavudheen4343 6 лет назад

    Great video! Hope u are feeling better now.

  • @Mayur7Garg
    @Mayur7Garg 6 лет назад

    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.

  • @gazalisameer4173
    @gazalisameer4173 5 лет назад

    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

  • @moonwatcher2001
    @moonwatcher2001 4 года назад

    Gorgeous

  • @abrarshaikh2254
    @abrarshaikh2254 6 лет назад

    Holly shit!!!
    I am stunned!

  • @SxB1337
    @SxB1337 6 лет назад

    Amazing!

  • @damianmatma708
    @damianmatma708 4 года назад +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

  • @InTheBeginningTheUniverseWas
    @InTheBeginningTheUniverseWas 5 лет назад

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

  • @cavver3523
    @cavver3523 6 лет назад

    Pretty good!!!

  • @randomcosmonaut8150
    @randomcosmonaut8150 5 лет назад

    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?

  • @markdenversorino4136
    @markdenversorino4136 4 года назад

    Nice paradox

  • @ethangilchrist3534
    @ethangilchrist3534 6 лет назад

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

  • @vanshgarg9560
    @vanshgarg9560 6 лет назад

    You are the best

  • @sarikabhoir9439
    @sarikabhoir9439 6 лет назад

    Make a video on Bassal problem

  • @shubhrajit2117
    @shubhrajit2117 4 года назад

    Oh, Awesome!

  • @natasadjurdjevic3533
    @natasadjurdjevic3533 6 лет назад +5

    Do the cone volume

  • @anthonycannet1305
    @anthonycannet1305 4 года назад

    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

  • @gurpreetbhatnagar
    @gurpreetbhatnagar 4 года назад

    wow!

  • @fisholea2154
    @fisholea2154 6 лет назад

    Bravo.