The Effect of Rain and Fog on the Propagation of Very Short Radio Waves

The purpose of this paper is to investigate theoretically the effect of rain, fog, or clouds on the propagation of short raidio waves. The theory of the propagation of electromagnetic waves in a medium in which are suspended spherical particles of an arbitrary material is first reviewed. The available physical data on fog and rain is then referred to. The conclusion is arrived at that for waves greater than 5 cm in length, the effect of ordinary rain or fog on the absorption is negligible.