where แรมด้า is the thermal conductivity of the sample (W/m K), q is the thermal unit of heater per time and length (W), t1, t2 is time (s), T1, T2 is temperature at t1, t2 (K).
where แรมด้า is the thermal conductivity of the sample (W/m K), q is the thermal unit of heater per time and length (W), t1, t2 is time (s), T1, T2 is temperature at t1, t2 (K).