thermocouple.md

(Red‑zone draft)

Thermocouple#

Thermocouples measure temperature via junction voltage. Their operation is simple but highly substrate‑dependent and prone to drift.

Dimensional Core (SET)#

• Spin: not relevant
• Elec: junction voltage
• Temp: primary axis

Why Red‑Zone#

Thermocouples operate in a fragile thermal‑electrical regime.
Junction contamination, oxidation, and material drift create large uncertainties.

Regime Notes#

• pos‑regime: clean junction, stable environment
• Q‑regime: oxidation, thermal cycling
• neg‑regime: rapid shocks, chemical contamination

Containment Notes#

Requires explicit material‑stability and drift boundaries.