Set the sample’s thermal diffusivity α and suspended length L. The tool draws the normalized average temperature rise T*(t) from the series solution and marks the characteristic time at which T* = 0.8665 (Fo = 0.2026). Faster diffusivity or shorter length → the transient settles sooner, as t ≈ L²/α scaling demands.
Model: one-dimensional transient conduction with both ends at the sink temperature and uniform step Joule heating — T*(t) = (96/π⁴) Σm odd (1/m⁴)[1−exp(−m²π²αt/L²)], summed here over m = 1…13. This simplified model omits radiation, coating and contact effects treated in the article; it illustrates time scaling, not a specific instrument’s output.