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

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  • Опубліковано 10 вер 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
    _________________________________________________________________
    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...

КОМЕНТАРІ • 216

  • @skiggywiggy8386
    @skiggywiggy8386 3 роки тому +21

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

  • @dareleven
    @dareleven 6 років тому +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!

  • @46pi26
    @46pi26 6 років тому +103

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

    • @ineedken5400
      @ineedken5400 6 років тому +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 років тому +17

      rigurously, it's more like math ∈ art.

    •  2 роки тому +3

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

  • @conoroneill8067
    @conoroneill8067 6 років тому +200

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

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому +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 років тому +56

      yes please!

    • @NoNameAtAll2
      @NoNameAtAll2 6 років тому +10

      @@ThinkTwiceLtu yes, would be great

    • @beenaalavudheen4343
      @beenaalavudheen4343 6 років тому +6

      Yes please!

    • @denisfuryaev8166
      @denisfuryaev8166 6 років тому +5

      We want

  • @JustMe-ui9bv
    @JustMe-ui9bv 6 років тому +45

    It's fricking beautiful! I love this content.

  • @avocadosauce6840
    @avocadosauce6840 6 років тому +88

    PLEASE do a video on the Taylor series.

    • @farisakmal2722
      @farisakmal2722 6 років тому +1

      I second that

    • @devanshgarg31
      @devanshgarg31 6 років тому +1

      Yep

    • @natasadjurdjevic3533
      @natasadjurdjevic3533 6 років тому +8

      3blue1brown has a great video about it

    • @Saltofreak123
      @Saltofreak123 6 років тому +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 років тому +1

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

  • @michaelren8110
    @michaelren8110 6 років тому +37

    spectacular video

  • @DarkLightning96
    @DarkLightning96 5 років тому +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 років тому +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 років тому +21

    Very smooth! Subbed instantly

  • @dominicjung4950
    @dominicjung4950 4 роки тому +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 років тому

    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!

  • @nicuradu911
    @nicuradu911 6 років тому +12

    Made my day! Content quality

  • @azialifaziz6652
    @azialifaziz6652 6 років тому +3

    It's great to see this Chanel getting sponsorship!

  • @dnickaroo3574
    @dnickaroo3574 Рік тому

    These animations which derive formulae visually are very helpful.

  • @theskycuber4213
    @theskycuber4213 6 років тому +1

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

  • @seanwrfps
    @seanwrfps 5 років тому +3

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

  • @deepakvyavahare7436
    @deepakvyavahare7436 6 років тому +6

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

  • @farisakmal2722
    @farisakmal2722 6 років тому +8

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

    • @columbus8myhw
      @columbus8myhw 6 років тому +4

      Channels _want_ sponsors.

    • @mather468
      @mather468 6 років тому +5

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

  • @quahntasy
    @quahntasy 6 років тому +6

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

  • @maxng7916
    @maxng7916 4 роки тому

    This is getting better than mindyourdecisions.

  • @rajeevaggarwal2937
    @rajeevaggarwal2937 5 років тому

    Your videos change my underrstanding about formulas and derivation

  • @MagicGonads
    @MagicGonads 6 років тому +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 років тому

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

    • @antoniolewis1016
      @antoniolewis1016 6 років тому +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.

  • @jameroth7661
    @jameroth7661 4 роки тому

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

  • @6lbs._onion
    @6lbs._onion 6 років тому +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 років тому +1

      Cavalieri is older then the way we do integrals now

  • @illumilenny8543
    @illumilenny8543 6 років тому +1

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

  • @Goku17yen
    @Goku17yen 5 років тому +2

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

  • @iVideoCommenter
    @iVideoCommenter 6 років тому +1

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

  • @PaulFisher
    @PaulFisher 4 роки тому

    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.

  • @gentko2159
    @gentko2159 6 років тому

    underrated channel for such mesmerizing content

  • @06kokoko
    @06kokoko Рік тому

    Holy crap…this is mind blowing

  • @DerAlfredman
    @DerAlfredman 5 років тому +1

    *Mind Blowing*

  • @sethbracken
    @sethbracken 6 років тому

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

    • @ThinkTwiceLtu
      @ThinkTwiceLtu  6 років тому

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

  • @Sam_on_YouTube
    @Sam_on_YouTube 6 років тому

    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.

  • @banderfargoyl
    @banderfargoyl 6 років тому

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

  • @manuelhoffmann4470
    @manuelhoffmann4470 6 років тому +4

    I like this. Especially the music! 😁

  • @rodrigo-vl7bi
    @rodrigo-vl7bi 6 років тому

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

  • @rutamodelsagency
    @rutamodelsagency 5 років тому

    Best math channel !!!

  • @rahul7270
    @rahul7270 6 років тому +2

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

  • @everr.r
    @everr.r 6 років тому

    absolutely beautiful. simple and efficient.

  • @elenajonikiene5999
    @elenajonikiene5999 5 років тому

    Elegantiška, paprasta, gražu. Super Think twice

  • @liaailia4454
    @liaailia4454 8 місяців тому

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

  • @MJMECH
    @MJMECH 4 роки тому

    Superb...easy way to learn

  • @Pedritox0953
    @Pedritox0953 5 років тому

    You won a subscriber

  • @JorgetePanete
    @JorgetePanete 6 років тому +1

    i love this channel, it really help us

  • @oussamanhairech5178
    @oussamanhairech5178 6 років тому +1

    Thank for this , I am really amazed

  • @rzsny6036
    @rzsny6036 6 років тому

    This is beyond satisfying

  • @nintendogos61
    @nintendogos61 5 років тому

    Cute lil shapes💛

  • @eccentricOrange
    @eccentricOrange 5 років тому

    Absolutely love it! Seen all your videos

  • @emirkandemir58
    @emirkandemir58 3 роки тому

    beautiful explanation, thanks!

  • @CinnamonyPasteline
    @CinnamonyPasteline 4 роки тому +1

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

  • @yamansanghavi
    @yamansanghavi 6 років тому

    Mind = Blown

  • @NeilDeshpande313
    @NeilDeshpande313 3 роки тому

    Utterly satisfying

  • @manjulata9680
    @manjulata9680 5 років тому

    Your videos are best

  • @cyrill2357
    @cyrill2357 5 років тому +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 років тому

      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

  • @wenhanzhou5826
    @wenhanzhou5826 6 років тому

    Wow, this was surprisingly good!

  • @tas378
    @tas378 5 років тому

    This is art I love it so aesthetic

  • @goncalosanhudodeportocarre9591
    @goncalosanhudodeportocarre9591 6 років тому

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

  • @anisbentafat8862
    @anisbentafat8862 3 роки тому

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

  • @cosimobaldi03
    @cosimobaldi03 4 роки тому

    OHH SHEEIT NEVER REALIZED THAT BUT IT'S SO PERFECT

  • @hindigente
    @hindigente 5 років тому

    Simply beautiful!

  • @elgeogran5485
    @elgeogran5485 5 років тому

    I get nothing but I do like to watch this videos

  • @deidara_8598
    @deidara_8598 6 років тому +1

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

    • @ThePharphis
      @ThePharphis 6 років тому

      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

  • @lithostheory
    @lithostheory 5 років тому +1

    Nice!

  • @HoaPham-yk5wn
    @HoaPham-yk5wn 5 років тому

    very interesting. thank u

  • @basil9633
    @basil9633 Рік тому

    W video , helped with hw

  • @Snowflake_tv
    @Snowflake_tv 2 роки тому

    Great! I appreciate it.

  • @Mayur7Garg
    @Mayur7Garg 6 років тому

    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.

  • @SVP-uy9qb
    @SVP-uy9qb 6 років тому

    This channel is great!

  • @beenaalavudheen4343
    @beenaalavudheen4343 6 років тому

    Great video! Hope u are feeling better now.

  • @ethangilchrist3534
    @ethangilchrist3534 6 років тому

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

  • @lampofthestreet
    @lampofthestreet 6 років тому

    Best channel

  • @POZZETTO-i1x
    @POZZETTO-i1x 6 років тому

    another amazing video!!👏👏👏👏 keep going

  • @freeshavaacadooo1095
    @freeshavaacadooo1095 4 роки тому

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

  • @minionologyforyou301
    @minionologyforyou301 6 років тому

    These videos are so great!

  • @joseffnic3560
    @joseffnic3560 6 років тому

    Super cool.

  • @zergdeveloper9227
    @zergdeveloper9227 2 роки тому

    Thanks 👍

  • @InTheBeginningTheUniverseWas
    @InTheBeginningTheUniverseWas 5 років тому

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

  • @lualalsa
    @lualalsa 6 років тому

    Superb.

  • @luizfelipegarcia4676
    @luizfelipegarcia4676 6 років тому

    Very nice

  • @anthonycannet1305
    @anthonycannet1305 4 роки тому

    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

  • @randomcosmonaut8150
    @randomcosmonaut8150 5 років тому

    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?

  • @jabo5008
    @jabo5008 6 років тому

    Beautiful!

  • @gazalisameer4173
    @gazalisameer4173 5 років тому

    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

  • @idrissmo418
    @idrissmo418 6 років тому

    How do you make these animations?

  • @Yamn911
    @Yamn911 5 років тому

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

  • @funkysagancat3295
    @funkysagancat3295 5 років тому

    awesome video :) keep up with the good work!

  • @damianmatma708
    @damianmatma708 4 роки тому +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

  • @musicalBurr
    @musicalBurr 5 років тому

    Lovely!

  • @kaustubha7371
    @kaustubha7371 6 років тому +3

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

  • @sarikabhoir9439
    @sarikabhoir9439 6 років тому

    Make a video on Bassal problem

  • @vpambs1pt
    @vpambs1pt 6 років тому

    Loved it

  • @abrarshaikh2254
    @abrarshaikh2254 6 років тому

    Holly shit!!!
    I am stunned!

  • @markdenversorino4136
    @markdenversorino4136 4 роки тому

    Nice paradox

  • @natasadjurdjevic3533
    @natasadjurdjevic3533 6 років тому +5

    Do the cone volume

  • @cavver3523
    @cavver3523 6 років тому

    Pretty good!!!

  • @vanshgarg9560
    @vanshgarg9560 6 років тому

    You are the best

  • @ayeariola
    @ayeariola 5 років тому +1

    Cylinder-Cone=Hemisphere

  • @SimchaWaldman
    @SimchaWaldman 5 років тому

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

  • @moonwatcher2001
    @moonwatcher2001 4 роки тому

    Gorgeous