Abstract
A non-steady-state method for measuring the thermal conductivity and thermal diffusivity of transparent solids is described. A thin metal strip is pressed between two plane pieces of the material to be tested and, through electrical heating, works as a continuous plane heat source. The temperature distribution is monitored with uncollimated-beam interference, the experimental conditions of which are discussed in some detail. The method is tested on fused quartz and the accuracy and the internal consistency of the measurements are demonstrated.
Published Version
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