Total Radiation from Nickel and Cobalt

Measurements have been made on the total radiation from nickel between 630^∘{}K and 1600^∘{}K and from cobalt between 672^∘{}K and 1590^∘{}K. The radiation was measured by means of a platinum-tellurium thermocouple and a high sensitivity galvanometer. A constant deflection method was used. The temperature of the metal was measured by means of a Holborn-Kurlbaum type of optical pyrometer, calibrated at the gold and palladium points, and by means of a platinum platinum-rhodium thermocouple. A comparison of the radiation with other properties of the metals is given.