  The paper describes a method for measuring the thermal diffusivity of
materials having a high thermal conductivity. The apparatus is rather simple
and low-cost, being therefore suitable in a laboratory for undergraduate
students of engineering schools, where several set-ups are often required. A
recurrence numerical approach solves the thermal field in the specimen, which
is depending on the thermal diffusivity of its material. The numerical method
requires the temperature data from two different positions in the specimen,
measured by two thermocouples connected to a temperature logger.
