A pulse calorimeter for measuring the specific heat of electrical conductors from 300 to 1500°K is described. The technique employed is unique in that a digital voltmeter, which is capable of recording 2000 readings/sec to a readability of 0.01% of full scale, is utilized to measure the transient temperature and power signals requisite to the method. Using this technique a calculated determinate accuracy of 99$ has been achieved to 1200°K. Above 1200°K, the accuracy is at least 98$. Measurements of the specific heat of pure iron from 300 to 1500°K were repeatable to within +0.5$ and confirmed the above accuracy statements. The calorimeter is capable of measuring the specific heat and electrical resistivity rapidly at temperature intervals as small as 0.03 degree, and the significance of such capability is discussed, particularly with regard to the nature of the specific heat of iron near its Curie transformation.
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