Abstract

No one needs to be convinced that snow is white. But those who have observed white snow on countless occasions may never have noticed that holes in snow are sometimes deep blue. So also are crevasses in glaciers blue. And sometimes the bubbly ice of frozen waterfalls may have a bluish-green hue. The purpose of this paper is to discuss these observations in the light of a simple theory (Bohren and Barkstrom, 1974), which has been critically discussed by van de Hulst (1980) and by Warren (1982).

© 1983 Optical Society of America