https://observablehq.com/@pamacha/three-points-in-a-plane
A unique circle passes through any three noncollinear points in a plane. The parameters of the circle can be derived with a little linear algebra. Three points...
three pointspaul chaikinplaneobservable
https://observablehq.com/@pamacha/chladni-figures
If you sprinkle sand onto a metallic plate and vibrate it with a violin bow or an amplifier, the sand will jitter into an intricate interference pattern. These...
chladni figurespaul chaikinobservable