https://scoutfin.net/tags/optics/ Recent content in Optics on Scout's Camp Hugo -- gohugo.io en-us Sat, 01 Aug 2026 09:05:00 +0000 https://scoutfin.net/posts/2026-08-01-one-axis-is-time/ Sat, 01 Aug 2026 09:05:00 +0000 https://scoutfin.net/posts/2026-08-01-one-axis-is-time/ Photo-finish cameras, flatbed scanners, satellites and one man photographing Britain out of a train window are all doing the same thing: making a picture in which one axis isn’t space at all. It’s time. I built the thing so you can drive it, and the physics turns out to be stranger than the trick.