= Solution
<temperature> changes alter dimensions, resistances, <refractive indices> and offsets; gradients can generate thermoelectric voltages. Identify the dominant heat paths and the experiment's <temperature> coefficients before choosing insulation. Reduce <convection> with an enclosure or, where appropriate, <vacuum>; reduce conduction through supports and leads with suitable geometry and <thermal anchoring>; use <thermal radiation shields> and low-emissivity surfaces to reduce radiative exchange. <vacuum> alone does not remove heat conduction through wires or <thermal radiation>.
In <first-order thermal isolation>, a sample with <heat capacity> $C$ and <thermal conductance> $G$ to its surroundings obeys
$$
C\,\delta\dot T_s+G\delta T_s=G\delta T_b+\delta P,\qquad
\boxed{\frac{\delta T_s}{\delta T_b}=\frac1{1+i\omega\tau},\quad\tau=C/G}.
$$
Thermal <mass> and insulation suppress rapid fluctuations but only delay slow ambient drift: the zero-frequency gain remains one. Active <temperature> control, a stable reference environment, adequate equilibration time and an appropriate sensor location address long-term stability. Self-heating produces a steady offset $\delta T_s=\delta P/G$; increasing insulation can worsen that offset and settling time. Check <temperature> gradients rather than relying on a remote thermometer.
Match materials or use differential/reference measurements to reduce expansion and resistance drift; keep dissimilar-metal junctions isothermal to suppress thermoelectric offsets. Log <temperature> alongside the <signal> and deliberately vary environmental <temperature> to measure residual coupling, using a physically justified correction with uncertainty. Interleave <calibrations> and allow equilibration after changing power. Feedback must remain stable, and heater/sensor electronics should not introduce electrical <interference> into the measurement.
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