American Journal of Physics
Harsch, J. and Walker, Jearl D., "Double Rainbow and Dark Band in Searchlight Beam" (1975). Physics Faculty Publications. 136.
Harsch, J. and Jearl D. Walker. "Double Rainbow and Dark Band in Searchlight Beam." American Journal of Physics 43 (1975): 453-455.
Copyright 1975 American Association of Physics Teachers. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Association of Physics Teachers. The following article appeared in American Journal of Physics 43 (1975): 453-455 and may be found at http://ajp.aapt.org/resource/1/ajpias/v43/i5/p453_s1?isAuthorized=no.