Spectroscopic Study of the Emission from Solids （1st report） -Monochromatic emittance and total emittance of the smooth and the rough surfaces of metals-

摘要

The monochromatic emittances of smooth and rough surfaces of aluminum and brass were measured directly，at 200℃ specimen temp., whose surfaces were scratched by the sand papers of various grain size. The rolled surfaces of metals on the market were used for the smooth surfaces. At the same time, the total emittances on these surfaces were measured by the vacuum radiometer of thermo-couple type. Agreement was obtained between the total emittance calculated from definite integral of the monochromatic emittance and the total emittance measured directly.