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A thermoelectric method is described which enables the temperature of a point contact to be determined. Measurements have been made on a germanium diode at various positions on the voltage - current characteristic and it is found that voltage turnover occurs at a critical contact temperature, which is constant for a given specimen. The result also shows that temperature gradients in the neighbourhood of a hot point contact can increase the contact resistance. An interpretation of this observation is proposed.
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Tipple et al. (1953) studied this question.
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