Why colliding blocks compute pi
6.4M views · Mar 13, 2025 · Education
Comments · 3.1K
@3blue1brown · 1 year ago · pinned
Here's the follow-on video about quantum computing: <a href="https://www.youtube.com/watch?v=RQWpF2Gb-gU">https://youtu.be/RQWpF2Gb-gU</a><br><br>In my original plan, that follow-on was going to be much more centered around the parallel with this block collision problem. In the end, that structure proved to be more confusing than helpful. I still show the connection, but only as a brief structured exercise at the end. It's based on this paper by my friend Adam Brown: <a href="https://arxiv.org/pdf/1912.02207">https://arxiv.org/pdf/1912.02207</a>
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@standupmaths · 1 year ago
For the record, I offered Grant a 'higher quality' Parker Square. He just laughed for a while.
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@polypolyman · 1 year ago
Always love it when the answer is “that’s beyond the scope of math” and not just “that’s beyond the scope of this video”
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@Elia2Tu · 11 months ago
Probably nobody will read this comment, but your original video is what inspired me to do what I did for my graduation project. I did a "physics simulation game" with different experiments to be used on a classroom, and the colliding blocks computing pi was the first one I did, and the one I spent the most time on. You quite literally changed my life and helped me find what I needed to complete my degree. I’ll be forever grateful for that video.
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@fiffy6572 · 1 year ago
babe wake up a new season of those colliding blocks came out
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@stellacollector · 1 year ago
You know things are gonna get serious when the blocks in the thumbnail turned 3D.
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@touhhoneyblock · 10 months ago
I love when math throws in random pi jumpscares when you actualy analyse how things behave
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@deleetiusproductions3497 · 1 year ago
crazy how it's been 6 years since that video already
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@AntiVectorTV · 1 year ago
Secretly genius to discuss the off-by-one error possibility and then post this one day before Pi day.
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@TheWinterscoming · 1 year ago
<a href="https://www.youtube.com/watch?v=6dTyOl1fmDo&t=164">2:44</a> love that you knew someone would complain about the sound even though it's an obvious simulation where you add "light" flashes and sound to demonstrate collisions
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@ReiSabio11235 · 1 year ago
Professor Sanderson.<br> When you released that video I was only a high school student, that met your channel while trying to self taught calculus.<br> Now I am a physics bachelor that has started its first day on a applied physics company, thank you very much for having been such a important teatcher for me during thosse years even if we haven't met.
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@pxlheart6237 · 1 year ago
The colliding blocks video was my first introduction to this channel. I'm now studying Computing & IT and Mathematics at university. Crazy how things change in such a short time. Keep doing what you're doing Grant, you'll inspire a million more mathematicians yet :D
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