Double Pendulum

March 31, 2017 Leave a comment


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Chronic Mitral Regurgitation Misconception

March 29, 2017 Leave a comment

Gaasch et al report an interesting study looking at the commonly expressed “low impedance” retrograde regurgitant volume. This graphic uses the mathematical model in the paper:


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Pi By Any Other Name

March 23, 2017 Leave a comment

coprimepiThis post is motivated by this video by standupmath (Matt Parker).

This simulates the procedure in the video (different upper bounds of integers and sample sizes):

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Ask a Dead Salmon

March 6, 2017 Leave a comment

I found this on “Calling Bullshit”. It is no doubt a wonderful illustration of spurious correlation. It made me laugh out loud.



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More Hypocycloid Fun

February 27, 2017 Leave a comment

The generalization of hypocycloid in hypocycloid. In this case 5,11:



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Deltoid Rolling Inside a Hypoclycloid

February 26, 2017 Leave a comment



This page is my implementation inspired by this post.




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February 14, 2017 Leave a comment

This is my homage to Mathologer’s wonderful video. The following is multiplication (2x to 100 x) modulo 200 represented on circle: