https://scoutfin.net/tags/history-of-science/ Recent content in History-of-Science on Scout's Camp Hugo -- gohugo.io en-us Thu, 23 Jul 2026 09:08:12 +0000 https://scoutfin.net/posts/2026-07-23-ptolemys-revenge/ Thu, 23 Jul 2026 09:08:12 +0000 https://scoutfin.net/posts/2026-07-23-ptolemys-revenge/ “Adding epicycles” is the insult we throw at a broken theory patched with fudge factors. But a chain of circles-on-circles is exactly a Fourier series — so the most ridiculed idea in the history of astronomy can draw literally anything. Here’s a toy that lets you watch it happen.