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Think Twice
United States
Registrace 16. 01. 2017
Mathematics in motion.
Generating Conic Sections with Circles | Part 3. The Hyperbola
Learn mathematics in a fun and interactive way at:
brilliant.org/ThinkTwice
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Help me create more videos by supporting Think Twice on:
► Patreon: patreon.com/Think_twice
► Twitter: thinktwice2580
► Instagram: thinktwice_ltu
(@thinktwice_ltu)
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Contact me:
► thinktwiceask@gmail.com
brilliant.org/ThinkTwice
-----------------------------------------------------------------------------------------------------------
Help me create more videos by supporting Think Twice on:
► Patreon: patreon.com/Think_twice
► Twitter: thinktwice2580
► Instagram: thinktwice_ltu
(@thinktwice_ltu)
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Contact me:
► thinktwiceask@gmail.com
zhlédnutí: 26 075
Video
Generating Conic Sections with Circles | Part 2. The Parabola
zhlédnutí 26KPřed 3 lety
Strengthen your problem-solving skills at: brilliant.org/ThinkTwice Let C be a circle centered at F and let L denote a line on the same plane as C which doesn't intersect C. Then construct a variable circle tangent to L and C and denote its center as X. A collection of all such possible centers X is a parabola. Help me create more videos by supporting the channel on: ► Patreon: patreon.com/Thin...
Generating Conic Sections with Circles | Part 1. The Ellipse
zhlédnutí 37KPřed 3 lety
Learn key problem-solving techniques at: brilliant.org/ThinkTwice Take any circle and pick any one of its interior points. Then the collection of the centers of circles passing through that point and tangent to the initial circle is an ellipse. Help me create more high-quality videos by supporting Think Twice on: ► Patreon: patreon.com/Think_twice ► Twitter: thinktwice2580 (@thinktw...
Euler's Formula V - E + F = 2 | Proof
zhlédnutí 54KPřed 3 lety
Explore the world of 3-dimensional geometry by signing up for free at: brilliant.org/ThinkTwice Proofs for two theorems used in this video: ► Polygon triangulation: czcams.com/video/2x4ioToqe_c/video.html ► Area of a spherical triangle: czcams.com/video/Y8VgvoEx7HY/video.html Euler's polyhedron formula is one of the simplest and beautiful theorems in topology. In this video we first derive the ...
Every Polygon can be Triangulated Into Exactly n-2 Triangles | Proof by Induction
zhlédnutí 44KPřed 4 lety
Learn more about propositional logic and dive into the world of beautiful geometry at: brilliant.org/ThinkTwice Help me create more content by supporting Think Twice on: ► Patreon: patreon.com/Think_twice ► Twitter: thinktwice2580 (@thinktwice2580) ► Instagram: thinktwice_ltu (@thinktwice_ltu) Contact me: ► thinktwiceask@gmail.com 🎵 Music by : Jonkyoto - www.fiverr.co...
Spherical Geometry: Deriving The Formula For The Area Of A Spherical Triangle
zhlédnutí 64KPřed 4 lety
For more fun and challenging 3D geometry problems head to: brilliant.org/ThinkTwice Please consider supporting Think Twice on: ► Patreon: patreon.com/Think_twice ► Twitter: thinktwice2580 (@thinktwice2580) ► Instagram: thinktwice_ltu (@thinktwice_ltu) Summary: ► A spherical triangle is a surface area of a sphere bounded by 3 arcs of great circles. ► Any spherical tria...
The Fermat Point of a Triangle | Geometric construction + Proof |
zhlédnutí 69KPřed 4 lety
Learn more theorems in Euclidean geometry and their applications at: brilliant.org/ThinkTwice Please consider supporting Think Twice on: ► Patreon: patreon.com/Think_twice ► Twitter: thinktwice2580 (@thinktwice2580) ► Instagram: thinktwice_ltu (@thinktwice_ltu) Summary: The Fermat point of a triangle ABC is a point P such that the sum of distances PA PB PC is a minimu...
A fun probability puzzle with a neat geometric solution.
zhlédnutí 52KPřed 4 lety
Spread the love of math by gifting your friends a Brilliant Premium subscription : brilliant.org/ThinkTwice Please consider supporting Think Twice on: ► Patreon: patreon.com/Think_twice ► Twitter: thinktwice2580 (@thinktwice2580) ► Instagram: thinktwice_ltu (@thinktwice_ltu) Any further questions: ► thinktwiceask@gmail.com Programs used: ► Cinema 4D ► Processing Music...
Constructing a Square of Equal Area to a given Polygon
zhlédnutí 105KPřed 4 lety
Explore the world of Euclidean geometry by solving geometry puzzles at: brilliant.org/ThinkTwice Please consider supporting Think Twice on: ► Patreon: patreon.com/Think_twice ► Twitter: thinktwice2580 (@thinktwice2580) ► Instagram: thinktwice_ltu (@thinktwice_ltu) About the video: 1. Pick any polygon 2. Split it up into triangles (While it is trivial to triangulate an...
Alternating series #2 | Visual solution |
zhlédnutí 33KPřed 5 lety
You can learn more about CuriosityStream at curiositystream.com/thinktwice Support my animations on: www.patreon.com/Think_twice Any further questions: Email: thinktwiceask@gmail.com Twitter: thinktwice2580 Instagram: @thinktwice_ltu thinktwice_... Programs used: - Cinema 4D - Processing Music by: miras2hot
Visual Calculus: Derivative of sin(θ) is cos(θ)
zhlédnutí 225KPřed 5 lety
Build an understanding behind different concepts of calculus that will help you tackle challenging problems at: brilliant.org/ThinkTwice Proof: Derivative of sin(θ) is cos(θ) Support my animations on: www.patreon.com/Think_twice Any further questions: Email: thinktwiceask@gmail.com Twitter: thinktwice2580 Instagram: @thinktwice_ltu thinktwice_... Programs used: - Cinem...
What is the area under an arc of a cycloid curve?
zhlédnutí 50KPřed 5 lety
Build an understanding behind different concepts of geometry that will help you tackle challenging problems at: brilliant.org/ThinkTwice Why does the area under a cycloid curve equal to 3 times the area of the circle used to trace out that curve? Support my animations on: www.patreon.com/Think_twice Any further questions: Email: thinktwiceask@gmail.com Twitter: thinktwice2580 Instag...
Napoleon's theorem | Proof |
zhlédnutí 59KPřed 5 lety
Explore the world of geometry at: brilliant.org/ThinkTwice Napoleon's theorem: "On each side of a triangle, erect an equilateral triangle, lying exterior to the original triangle. Then the segments connecting the centroids of the three equilateral triangles themselves form an equilateral triangle." Support my animations on: www.patreon.com/Think_twice Any further questions or ideas: Email: thin...
Cavalieri's Principle in 3D | Volume of a sphere |
zhlédnutí 106KPřed 5 lety
To improve your problem solving skills, go to: brilliant.org/ThinkTwice 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) Support my animations on: www.patreon.com/Think_twice Any further questions or ideas: Email - thinktwiceask@gmail.com Twitter - thinktwice2580 Programs used: - Cinema 4D Mu...
Alternating series #1 | Visual solution |
zhlédnutí 44KPřed 5 lety
A short animation about a visual solution to an alternating series:) Support my animations on: www.patreon.com/Think_twice Any further questions or ideas: Email - thinktwiceask@gmail.com Twitter - thinktwice2580 Programs used: - Cinema 4D Music: " Gone For Now "- czcams.com/video/bkJ-5Pb-514/video.html
Pythagorean theorem | 3 Visual Proofs |
zhlédnutí 62KPřed 5 lety
Pythagorean theorem | 3 Visual Proofs |
Approximating Pi ( Monte Carlo integration ) | animation
zhlédnutí 93KPřed 5 lety
Approximating Pi ( Monte Carlo integration ) | animation
Finding the general formula for nth octagonal number | Visual proof |
zhlédnutí 38KPřed 6 lety
Finding the general formula for nth octagonal number | Visual proof |
Arithmetic mean vs Geometric mean | inequality among means | visual proof
zhlédnutí 50KPřed 6 lety
Arithmetic mean vs Geometric mean | inequality among means | visual proof
Infinite Sums | Geometric Series | Explained Visually
zhlédnutí 133KPřed 6 lety
Infinite Sums | Geometric Series | Explained Visually
Geometry of Binomial Theorem | Visual Representation | 2 examples
zhlédnutí 56KPřed 6 lety
Geometry of Binomial Theorem | Visual Representation | 2 examples
Four squares with constant area | Visual Proof | Squaring the segments |
zhlédnutí 54KPřed 6 lety
Four squares with constant area | Visual Proof | Squaring the segments |
Geometry: Viviani's theorem | Visualization + Proof |
zhlédnutí 146KPřed 6 lety
Geometry: Viviani's theorem | Visualization Proof |
Fitting a Cube Through a Copy of Itself | Rupert's Cube |
zhlédnutí 319KPřed 6 lety
Fitting a Cube Through a Copy of Itself | Rupert's Cube |
Chaos Game | Fractals emerging from chaos | Computer simulation |
zhlédnutí 330KPřed 6 lety
Chaos Game | Fractals emerging from chaos | Computer simulation |
Unfolding The Dragon | Fractal Curve |
zhlédnutí 189KPřed 6 lety
Unfolding The Dragon | Fractal Curve |
Double pendulum | Chaos | Butterfly effect | Computer simulation
zhlédnutí 3,9MPřed 6 lety
Double pendulum | Chaos | Butterfly effect | Computer simulation
Cutting a Möbius strip in half (and more) | Animated Topology |
zhlédnutí 437KPřed 6 lety
Cutting a Möbius strip in half (and more) | Animated Topology |
Area of dodecagon | Beautiful geometry | Visual mathematics
zhlédnutí 123KPřed 6 lety
Area of dodecagon | Beautiful geometry | Visual mathematics
Sum of first n odd numbers | Visual mathematics |
zhlédnutí 89KPřed 6 lety
Sum of first n odd numbers | Visual mathematics |
Physics can be beautiful🎉
Mag ich sehr gerne zuschauen!!😊
Are there any other examples of this where the sum of powers, is equal to another power of sums? I.e. where the 1^a + 2^a + 3^a + ... + n^a = (1 + 2 + 3 + ... + n)^b?
beautiful ! instant like and subscription!
Nice video, thanks for posting 😊
Лектор доказал эту теорему на занятии по математическому анализу, но не назвал её. Спасибо!
What software do you use to create the animation?
Why the B'AB is measure as 60° ?
The most epic introduction for a laptop ( play from 1:44 at 2x) Edit: Edited timestamp
In minute 1:36, why is (4 x pi x r squared) divided by 2 pi
Great proof
Amazing video; very clear!
Thanks a lot.
i just found ur channel and i neeeeeeeeed u i have trig identities test
please please please upload again
Anyone here from codeforces CodeTon?
"slightly"
fy!
That's literally the best video I have ever seen.
Thank you.
Super nice video!! Your efforts are really appreciated, if you could make a video like these for all geometry theorems in Olympiad it would be pretty cool and I guess would blow up pretty fast. I know it takes a tremendous amount of efforts so thanks!!! (PS how do you animated your videos?)
A great way to explain it by cutting the strips and then twisting them, thanks. I have one for you. If the formula for the surface area of a circle is πr2, should the volume of a sphere be πr3? I would love to see a visual explanation of that.
my hurt heads
The mathematical arm
I love this because it disproves that its chaos and unpredictable the verry fact it is simulated means it is predicted
12 hues of the color wheel. 12 tribes on planet earth. Chaos.
please come back! your vids are amazing please come back
this shit made me feel like i was in a coldplay concert
This is very usefull thank you
for the quadrilaterall, let A,B,C,D in order be the points of the quadrilateral and x the candidate for the "fermat" point. we want to minimize |x-A|+|x-B|+|x-C|+|x-D|. We take the gradient with respect to x and get (x-A)/|x-A|+....+(x-D)/|x-D|=0 for the minimum (assuming it exists). So let a,b,c,d be the vectors that are in the same direction as x-A,...,x-D but with unit length. This means we want a+b+c+d=0, since vector adition is tip to tail this means that we have a quadrilateral with lengths of the same size, ergo they consititue a rombus ergo it is a parallelopiped, so a+c=0, b+d=0. This means that x is between A and C as well as B and D. Meaninf that x is the intersection of AC and BD.
Beautiful vishuvalization
Bravo 👏
i build this in minecraft
Question, how do we know that every polygon has at least one convex vertex ( I assume that is a vertex that has an angle < 180 with its neighbouring sides?) in the first place, so that the diagonal algorithm can work?
Ну и как мне к этой хуйне придумать 5 вопросов?
Why did last fractal not have pentagonal symmetry?
dragon curve is copied on one end and rotated 90°, julia set is complex square rooted, which is halved angles on one point and copied 180° around it and square rooted distances. dragon curve kinda looks like julia sets. I'll try make a mandelbrot set for dragon curves and see if it's fractal or something boring like circle. the most obvious way of doing it with moving the point of copy and rotate is circle.
thank you, this animations make every thing clear to me
thank you, this annumation make every thing clear to me
The pentagonal fractal might me wrong. I made my own code and it looks nothing like the video; plus, you would expect it to be rotationally symmetrical
Did this process upto 19 iterations on AutoCAD and the result looks amazing
This is such an amazing site to learn, once again, the concepts we knew only as written proofs. Please keep up the good work and you may want to take a look at the geometrical shapes of the ancient Astronomical Clock "Jantar Mantar"
This blew my mind, and was extremely visually satisfying. Well done!
Great video. Can you please do a series on how Hindu mathematicians dervived sine, cos, arctan and pi and tan. What was their understanding of series. This would be a wonderful series😊.
Looks like Brownian motion.
wtf
Now do triple pendulum
Thanks for this amazing video. I could write this algorithm in C to support triangulation of OBJ files in my 3d-ascii-viewer program. There are more efficient algorithms in literature but this one I could understand.
it's brilliant! thanks for making this vedio. it was really helpful to prepare shcool presentation!