title: Divine countenance or witches' brew?
authors.affiliation: University of California Davis, 4860 Y Street, Suite 2400, Sacramento, CA 95817, USA. irschwab@ucdavis.com
authors.forename: I R
authors.initials: IR
authors.lastname: Schwab
mesh_terms: D006801:Humans; D008685:Meteorological Concepts; D009903:Optical Illusions; D055095:Optics and Photonics; D010781:Photography; D012542:Scattering, Radiation