3blue1brown
@3blue1brown·8.4M subscribers·240 videos
Why slicing a cone gives an ellipse (beautiful proof)
Posted
August 1, 2018
Views
2,339,327
Likes
67,884
Comments
2,593
Engagement
3.01%
August 1, 2018
2,339,327
67,884
2,593
3.01%
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12:52Now PlayingDandelin spheres, conic sections, and a view of genius in math.
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Thoughts on the recent change to be sponsor-free:
Video on Feynman's lost lecture
I originally saw the proof of this video when I was reading Paul Lockhart's "Measurement", which I highly recommend to all math learners, young and old.
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The 3d animations in the video were done using Grapher, while 2d animations were done using
If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then "add subtitles/cc". I really appreciate those who do this, as it helps make the lessons accessible to more people.
Music by Vincent Rubinetti:
Thanks to these viewers for their contributions to translations
Hebrew: Omer Tuchfeld
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