The mathematical physics of rainbows and glories (2001) [pdf]

📝 Discussion Summary (Click to expand)

Three prevalent themes

Disappointment with the monochrome PDF – “137 pave pdf on rainbows and it's in black and white. Pretty upset about this :)" – nirgunarthy
Praise for Atmospheric Optics as a resource – “If you're at all interested in this stuff, Atmospheric Optics is a fantastic resource that illustrates and explains these phenomena with both depth and accessibility.” – devindotcom
Appreciation for preserving old‑school references – “Super old school, love that it's still online.” – devindotcom

🚀 Project Ideas

Curated, black‑and‑white PDF compendium of atmospheric optical phenomena (rainbows, glories, halos, etc.) with high‑resolution vector illustrations and clear explanatory text.
Value: Provides a printable, offline reference that solves the frustration of inaccessible color‑only or poorly formatted online content.

Key	Value
Target Audience	Hobbyist scientists, educators, amateur astronomers, and weather enthusiasts who want offline, printable resources.
Core Feature	Downloadable PDF packs per phenomenon, searchable index, downloadable individual pages, citation links to original Atmospheric Optics articles.
Tech Stack	Static site generator (e.g., Hugo), LaTeX → PDF conversion, GitHub Pages for hosting, PDF.js for preview.
Difficulty	Medium
Monetization	Revenue-ready: Freemium (free basic PDFs, $7 per premium pack)

HN commenters explicitly asked for a “pave pdf on rainbows” in black and white, indicating demand for a clean, printable PDF.
The project leverages the existing Atmospheric Optics site, adding value by packaging its content into ready‑to‑print PDFs.
Potential for community contributions and ongoing updates as new phenomena are added.

Interactive web tool that lets users select a specific atmospheric optical phenomenon and instantly generate a printable black‑and‑white PDF with customizable formatting and annotations.
Value: Solves the need for tailored, offline PDFs of favorite topics without manual editing.

Key	Value
Target Audience	Students, teachers, science communicators, and curious HN users who want quick, custom PDFs of specific phenomena.
Core Feature	Dropdown of phenomena, preview of vector diagram, auto‑generated PDF with explanatory text, option to add personal notes.
Tech Stack	React front‑end, d3‑force for SVG diagrams, jsPDF library, Node.js API for PDF rendering.
Difficulty	Medium
Monetization	Revenue-ready: Subscription (Basic free, $4.99/month for unlimited downloads)

Directly addresses the “pretty upset about this :)” comment regarding missing black‑and‑white PDFs.
Provides practical utility for printing or sharing on forums, increasing shareability on HN.
Can be extended with community‑submitted templates.

Browser extension that converts any Atmospheric Optics page into a clean, black‑and‑white, printable PDF with one‑click, plus offline storage and annotation tools.
Value: Eliminates the manual steps users currently perform to save web content as PDFs, providing a seamless workflow.

Key	Value
Target Audience	Web browsers who frequently reference Atmospheric Optics, researchers, and HN participants looking for offline access.
Core Feature	One‑click “Save as PDF” button, automatic grayscale conversion, preserves vector graphics, adds a built‑in annotation sidebar.
Tech Stack	Chrome Extension (Manifest V3), Puppeteer for PDF rendering, IndexedDB for offline storage.
Difficulty	Low
Monetization	Revenue-ready: Freemium (free basic conversion, $3 one‑time for premium features like batch export)

Users mentioned “Super old school, love that it's still online,” indicating appreciation for the site but need for easier offline capture.
Directly solves the pain point expressed in the discussion about wanting a “pave pdf on rainbows.”
Easy to adopt, can gain traction quickly through HN posts and tech community shares.