bubblechambersimart/roadmap.md

Roadmap — artistic direction & development

This is the creative north star plus a staged plan. The technical backlog lives at the bottom; the top is about why, because every feature should serve a feeling.

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What these images are, and what they evoke

A bubble-chamber photograph is evidence of the invisible. You cannot see a particle; you can only see where it has been — a wake, a trace, a confession. The plate is the one proof that something happened. There is something devotional in that: faith made visible, an instrument straining to record the unseeable.

It is also a single millisecond, embalmed. The collision is over before the flash fires; what we keep is the frozen aftermath, an instant given the permanence of a relic. So the picture is always already a memory — which is why the worn, stained, scratched plate feels more true than a clean one. The damage is time itself, made visible alongside the event.

And it is a rhyme across scales. The δ-ray's tight logarithmic spiral is the nautilus, the fern, the hurricane, the galaxy arm. The radial shock disk is a sun, a pupil, a drain, a mandala, a struck bell. A subatomic event quotes the shapes of the cosmos. Stand a person in front of a four-metre print and the collapse of scale — the very small wearing the clothes of the very large — produces vertigo and recognition at once.

Finally there's the human urge to read it. We can't help scanning these tracks like entrails, tea leaves, constellations — looking for the message, the figure, the meaning in marks that were authored by chance under deterministic law. Order and chaos, in the same gesture.

The feelings to chase

• Awe / reverence at the unseen made manifest.
• Contemplative stillness — despite the violence of a collision, the plate is silent.
• Melancholy / nostalgia — the aged document, the people who once bent over it with calipers.
• Vertigo of scale — atom and galaxy in one frame.
• Uncanny familiarity — "I have seen this shape before," in water, smoke, bone, sky.
• The numinous — physics as a secular mysticism, the search for the fundamental.

Principles for invoking them

1. Scale is content. At wall size the viewer is inside the event, not looking at a diagram. Design for the body, not the thumbnail.
2. Depth and layering are time. A palimpsest of events reads as history; volumetric depth reads as a real chamber you could fall into. (This is your layered-print instinct, and Phase 1 & 3 below.)
3. Colour is transcendence — when it is meaningful. False-colour that encodes physics (charge, speed, depth, time) bridges the scientific and the mystical; arbitrary rainbow does not. Earn the colour.
4. Keep the hand in it. The smudge, the grease-pencil ring, the handwritten angle — traces of the human who studied the plate — are what separate "artifact" from "render."
5. The series is an argument. One plate is an image; a grid of them is a worldview (taxonomy, the archive, the scientific gaze). Becher typology energy.
6. Determinism is a feature. The seed as a true name. Every piece is reproducible, citable, ownable — a hash you can print on the frame.

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Staged plan

Phase 1 — Depth & exposure dynamics ✅ done

Make per-trail intensity mean something instead of being event-flat.

• Depth (z) per event/track → opacity, softness, and bubble size. Tracks near the focal plane sharp & dark; deep tracks faint, soft, slightly smaller. Turns the flat diagram into a volume.
• Event age → background events read as earlier in the cycle: fainter, fuzzier, slightly bloated bubbles (risen/diffused). Layering becomes time.
• Overall exposure → global dial for accumulated faint background trails + veiling fog. "Single trigger" ↔ "the chamber ran all night."
• Variation is driven by these axes, not free noise, so it reads as depth/time.

Phase 2 — Parameterised colour ("regimes") ◐ in progress

Colour as a first-class, seeded, swappable layer (palette.js abstraction; B&W default). Each regime is a mapping from physics → colour via palette hooks (ink/paper/feature/vign), consumed uniformly by all renderers.

• False-colour (scientific sublime): ✅ charge duotone and beta (velocity → spectral) shipped.
• Per-bubble colour hook: ✅ done — bubbleInk + per-bubble life/beta.
• Lifecycle: ✅ lifecycle feel — colour follows each particle birth→death.
• By particle type: ✅ kind (one hue per type) and kindlife/kindrise (type→hue, lifecycle→intensity, fading or rising). magentarise ✅ shows a composed, restrained feel (magenta family + burnt-orange disk).
• Saturation/intensity ✅ global dial.
• Paper toning & shading ✅ separate from ink (absolute paper tones: cream/ sepia/selenium/cool/olive/neutral + strength + brightness + gas-glow).
• Hue shift ✅ global hue rotation of any palette; psychedelic ✅ hue-cycle along trails (hueCycles); cyanotype ✅ a full chemistry (paper+ink override, blueprint). Renderers now choose blend by ground luminance, so light-on-dark chemistries composite correctly.
• Iridescent disk ✅ (diskSpectrum) — spectral hue across the sunburst striations/rings/rim (raster + SVG + PDF). Chromatic halo ✅ (halo,haloHue) — a hue-shifted blurred aura around trails: coloured drop-shadow on light grounds, neon glow on dark (raster; SVG/PDF approximation TBD via filter).
• Next: more chemistries (Van Dyke, platinum); per-bubble β (local velocity hue); SVG halo via feGaussianBlur+feFlood filter.
• Spectral / narrowband: astronomical palettes (Hubble SHO, emission lines) — the chamber as deep-sky object.
• Analog photographic: cyanotype, sepia/albumen, silver-gelatin, blueprint — alternate plate chemistries rather than hues.
• Psychedelic (mind set free): hue cycling along each track (rainbow wakes), hue-by-depth, complementary bloom/halation, solarisation, oil-on-water iridescence on the shock disk. Energy, synaesthesia, the numinous turned up.
• All seeded and parameterised; a "colour" axis orthogonal to geometry, so any existing seed can be re-coloured without changing its forms.

Phase 3 — Literal depth (the chamber as a volume)

Take "depth is time/space" all the way.

• Depth-of-field: true z-based blur in the raster compositor (cinematic focus).
• Stereo pairs / anaglyph: render two eye-views from the z-model → 3D diptych, or red/cyan anaglyph. Real bubble chambers were shot in stereo for exactly this.
• Translucent layered print: export the existing render layers (tracks / disk / damage / depth-bands) as separate files designed to be printed on acetate or film and physically stacked with air gaps — a real, three-dimensional plate the viewer can move around. The strongest fusion of your layered-print plan and the chamber's actual geometry.

Phase 4 — The archive & the human hand

• Plate series / typology: deterministic grids (MUON-001…024), contact-sheet- as-artwork, a fabricated catalogue with consistent archival furniture.
• Annotation fiction: hand-drawn measurement marks — angle arcs at vertices, momentum labels, grease-pencil circles around a "find," ruled scales, stamped plate numbers, a faux logbook caption. The forensic, studied layer.
• Archival apparatus: fiducial coordinate grids, exposure metadata, a "lab" identity system (letterpress-style headers, reference codes).

Phase 5 — Time & cross-modal (stretch / exhibition)

• Animation: the event forming — particles drawing inward, δ-rays spiralling to rest; a slow living plate for screens/projection.
• Sonification: map tracks/curvature/density to sound — the plate as score; long cosmics as drones, δ-ray spirals as glissandi.
• Field visualisation: optional rendering of the B-field the particles obey — the invisible cause behind the visible trace.

Cross-cutting

• Composition control: golden-ratio / thirds vertex placement, multi-vertex narratives, deliberate placement of the disk as anchor; "art-directed" seeds.
• Material & print: metallic / duotone inks, risograph, substrate tests; the hash printed on the frame as title/edition.
• Curation tools: favourite/lock seeds, a named collection manifest, side-by- side compare in the app.

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Immediate next steps

1. Phase 1 depth/exposure dynamics (answers the open "more per-trail variation?" question — yes, depth- and age-driven).
2. Phase 2 colour regimes, starting with charge duotone + a β false-colour, then the psychedelic set.
3. Decide Phase 3 direction with the physical print plan (acetate-stack test).

Guiding test for any new feature: does it deepen the sense that we are looking at a real trace of something unseen — and does it reward standing closer?