Studies on the Transmission of the Infra-red Radiation through Smoke Layers (1)

Abstract

The transmissivity of the infrared radiation through smoke layers of 9 kinds was measured for different amounts of smokes. Smoke amount was at first represented relatively by the transmissivity of the visible light. Then the relation between the transmissivity of the visible light and the actual smoke amount was investigated experimentally. The relation between smoke amount and the transmissivity of the infrared radiation was shown in fig. 6.
Finally the ratio of the infrared transmissivity of these smokes to that of fog given by Mr. Saito was calculated and the controlling power for infrared radiation of fog and these smokes was compared.