title: The physics of light and sunlight.
abstract: The physical properties of light, both natural and artificial, play a significant role in its interaction with humans. Although there is a yet-to-be-explained duality between light as waves and light as photons, we do understand many of the characteristics of light that affect living things. Here I review the general history of light and its properties, especially those that affect human health.
authors.affiliation: Department of Physics, Emory University, Atlanta, GA 30322-2430, USA. physp@emory.edu
authors.forename: Sidney
authors.initials: S
authors.lastname: Perkowitz
mesh_terms: D006801:Humans; D008027:Light / Q000009:adverse effects*; D008029:Lighting; D055585:Physical Phenomena; D010825:Physics; D013472:Sunlight / Q000009:adverse effects*