photometer.md

(Yellow‑zone draft)

Photometer#

Photometers measure light intensity. Their behavior is stable but sensitive to spectral assumptions and detector drift.

Dimensional Core (SET)#

• Spin: not relevant
• Elec: detector response
• Temp: affects noise and sensitivity

Why Yellow‑Zone#

Photometers rely on spectral assumptions and detector calibration that drifts over time.

Regime Notes#

• pos‑regime: stable illumination
• Q‑regime: spectral mismatch, detector drift
• neg‑regime: saturation, unstable sources

Alignment Notes#

Needs explicit spectral‑response notes.