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  • The next meeting of the AK-Thermophysics Working Group will take place in 2025 in Berlin.

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Various thermophysical variables are described on the following pages. The facilities and options available to measure thermophysical material properties within the working group can be downloaded as tables in pdf format.

The thermal expansion

The thermal expansion of a solid is a function of temperature. The linear expansion coefficient α at constant pressure p is calculated with:

whereby l0 is the length of the sample at a defined reference temperature, e.g. 273.15 K.