HSH-1012 - CRT Phosphor Persistence and Decay Modeling in Terminal Canvases

Living Document Notice
Published 2026-09-27. Living revisions and interconnected notes live in the Stax Digital Garden.

CRT Phosphor Persistence and Decay Modeling in Terminal Canvases

Modern high-refresh displays render telemetry data with clinical sharpness that lacks spatial history. Simulating historical P4 and P31 CRT phosphor persistence curves provides human operators with visual trailing context during high-frequency telemetry spikes.

Phosphor Persistence Dynamics

1. Exponential Decay Blending: Rendering loops compute alpha falloff using physical millisecond half-life decay curves ($e^{-\lambda t}$).
2. Double-Buffering Decay Textures: WebGL offscreen buffers retain decayed frame traces, accumulating high-frequency waveform pulses.
3. Beam Blur & Raster Jitter: Subtle chromatic aberration shaders emulate electron gun bloom without degrading text legibility.

Visualizing real-time telemetry streams through modeled decay buffers allows immediate identification of anomalous signal spikes against background noise.

---

• Directus Target: hushwire-blog
• Garden Source Reference: MOC - hushwire-telemetry, MOC - Systems Operations, LOG-1001 - Append-Only Temporal Logs