five shells

COMPUTEDThe five layers, classified by the CIE 1931 2° tables. Orange (600 nm) is spectral. Purple is non-spectral, on the line of purples. Green is spectral, and it is purple's complement (≈564 nm). Yellow is spectral at about 580 nm, but also matchable by a red+green mixture with no 580 nm light in it (a metamer), so it is the layer that is both. Then the void.

LITPattern: spectral, non-spectral, spectral, spectral-or-mixture, nothing. Each ring is drawn at its computed sRGB. Tap to let the outer yellow ring flip between the 580 nm line and its red+green twin; the screen colour stays the same.

flip yellow

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on