Apparent Directionaｌ Emittances on the v-Groove and the Circular Groove　Rough Surfaces

摘要

The radiaｔions from the solid surfaces whose surface roughness random are complicated phenomena. ln this paper as a ｆirst step，therefore，are the apparent directional emittances of the simplified rough surfaces，supposing that these are composed of the same v-grooves and the same circular ｇrooves，calculaled two dimensionally，the emittances of the specimens of aluminum are measured experimentally，and the caｌculation vaｌues are　compared　with　the measurerment values.