# Sphere Demo Planning Meeting
**Date:** 2026-03-27, 17:09 UTC (12:09 PM ET)
**Participants:** Joshua Widdicombe, Stephen Guerin, Gregory Kestin, Devon Bryant
**Recording:** [Zoom](https://harvard.zoom.us/recording/detail?meeting_id=gcx3YZ7dTAaxl5sYQC42Pw%3D%3D)

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## Action Items

- [ ] **Greg** -- Create Google Drive folder "April Sphere LED Lightning Demo in Cabot" and invite everyone (Harvard emails). Share brainstorming doc and idea list. *(Done during meeting)*
- [ ] **All** -- By end of next week (~April 3): each pick at least one "showstopper" demo idea and document it in the shared Google Doc.
- [ ] **All** -- Internal demo day ~April 6 (Monday): show MVPs to each other, iterate on feedback. Stephen joins via Zoom.
- [ ] **Josh** -- Lock down the date for the faculty event (target April 13 at noon, fallback April 20). Confirm with Susan/Cabot Library.
- [ ] **Josh** -- Prepare technical setup: 4 monitors (2 sphere, 1 control, 1 content capture), capture card for laptop input, Mad Mapper mappings.
- [ ] **Josh** -- Build TouchOSC-to-Mad Mapper interface demo with Lunar Reconnaissance Orbiter and Mars satellite imagery datasets.
- [ ] **Stephen** -- Work on equirectangular projection warping (WebGPU/WebGL), user content submission workflow, and a time-based event layer demo (e.g., hurricane, pandemic spread, air traffic).
- [ ] **Stephen** -- Reach out to Martin Wattenberg (Harvard CS) about potential collaboration.
- [ ] **Stephen** -- Coordinate with Greg on the applet-creation workflow (Claude Code to sphere pipeline).
- [ ] **Greg** -- Explore particle physics visualizations (LHC collisions, light shell theory from his PhD thesis) for sphere content.
- [ ] **Greg** -- Reach out to Harvard faculty (exoplanets, climate science, EPS, astro, CS) for research collaboration ideas. CC the team on any outreach to avoid overlap.
- [ ] **Devon** -- Prepare 5-10 min demo of his C4D virtual 360-camera workflow for creating sphere content, showing the dome camera setup and equirectangular rendering pipeline.
- [ ] **Stephen** -- Keep April 13 open (9 AM - 2 PM) until date is confirmed.
- [ ] **All** -- Mid-next-week: schedule a follow-up call via email.

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## Summary

The team met to plan a faculty presentation/demo of the LED sphere display at Cabot Library's "Discovery Bar." The event targets approximately April 13 at noon, with a 20-30 minute structured presentation followed by freeform exploration. The audience will be Harvard science faculty, with food provided.

### Event Format
- 20-30 minutes of lightning demos (a few minutes each)
- Freeform Q&A and hands-on exploration afterward
- Two spheres active, each as a separate demo station during freeform time
- ~15-person audience with chairs, casual/open format

### Individual Contributions

**Josh Widdicombe** -- TouchOSC iPad interface controlling Mad Mapper and Notch. Lunar/Mars satellite imagery with rotation controls (east-west rotation; north-south distorts too heavily). Also covering sphere technical overview (how it works, pixel pitch, projection).

**Stephen Guerin** -- Three focus areas: (1) equirectangular projection warping via WebGPU/WebGL for content from different formats, (2) user content submission and playlist management with authentication (Harvard email, curation workflow, URL-based submissions), (3) time-based event visualization with layers (hurricanes, pandemics, air traffic, weather archives). Also proposed: photo geolocation from laptops (no upload needed, runs locally), semantic research mapping on the sphere, and AI-assisted paper visualization (demoed converting Greg's PhD thesis into sphere visuals).

**Greg Kestin** -- Particle collider visualizations from his particle physics background (LHC collisions, light shell theory). Brainstormed interactive audience demos: wave propagation, tsunamis, pandemic spread, tectonic plates, species migration, lightning/thunder visualization. Emphasized keeping demos short and varied ("sprinkles of ideas") to inspire faculty.

**Devon Bryant** -- Cinema 4D virtual 360-camera workflow. Will demonstrate the dome camera setup (inward-pointing camera capturing all directions), the equirectangular output, and how it maps back onto the sphere. Plans to use the Discovery Bar's interior screen alongside the sphere.

### Interactive/Audience Participation Ideas
- Phone-based interaction via QR code (like SimTable): tap to create waves, trigger events
- Wave propagation on the globe (ocean waves, sound, tsunamis)
- Collaborative agent simulations where each audience member controls an agent
- Time slider for historical events (air traffic changes, weather, pandemic spread)
- Speed-of-light and speed-of-sound visualizations on the globe

### Technical Specs
- Content format: **1920x960** equirectangular (2:1 ratio) preferred; 1920x1080 also works (Mad Mapper scales)
- Setup: 4 monitors off one machine (2 sphere, 1 control, 1 content capture via NDI)
- Alternative: laptop with capture card for contributor-controlled demos
- Interactive content: separate UI window captured alongside content window

### Faculty Outreach
- John Shaw's priority: engage researchers across disciplines
- Target departments: climate science, computer science, EPS, astronomy, exoplanets
- Martin Wattenberg (Harvard CS, formerly Google) as potential collaborator
- Goal: faculty submit their own content/research for the sphere

### Key Quotes
- Greg: "If you go on Claude Code and say, make me this applet... you can just drop it on here. They will love that."
- Stephen on AI paper visualization: "It's a talking dog demo. You don't care what the dog says, the fact that it's talking is interesting."
- Stephen: "Think of the whole portfolio that John manages as research... you could lay it out in equirectangular on the sphere."