Jekyll2026-01-28T22:33:22+01:00https://wejn.org/feed/by_tag/color_wonkery.xmlWejn.orgWejn's corner on the interwebs, containing articles about computers (Linux), programming, system administration, and whatever else takes my fancy.Michal JirkůVisualize those pesky rainbows (interactively)2026-01-14T18:25:00+01:002026-01-14T19:00:34+01:00https://wejn.org/2026/01/visualize-those-pesky-rainbows-interactivelyMichal JirkůIn the previous post (On the unreasonable difficulty of plotting pretty rainbow, fast) I spent many words coming up1 with the Ultimate Rainbow™ for visible light spectra. Well, stealing from Dr. Young, really. ↩On the unreasonable difficulty of plotting pretty rainbow, fast2026-01-10T14:56:00+01:002026-01-10T20:40:31+01:00https://wejn.org/2026/01/on-the-unreasonable-difficulty-of-plotting-pretty-rainbow-fastMichal JirkůThe problemFailing to calibrate flame-s-vis-nir-es spectrometer2025-07-31T19:09:00+02:002025-12-25T19:24:21+01:00https://wejn.org/2025/07/failing-to-calibrate-flame-s-vis-nir-esMichal JirkůProblem statementPhilips Hue White Ambiance is actually terrible…2025-07-17T15:53:00+02:002025-12-25T19:24:21+01:00https://wejn.org/2025/07/philips-hue-white-ambiance-is-actually-terribleMichal JirkůIntroductionTorch Bearer Spectrometer UI2025-07-05T11:20:00+02:002025-12-25T19:24:21+01:00https://wejn.org/2025/07/torchbearer-spectroscope-uiMichal JirkůProblem statement