Light is fundamental to life, and Earth’s 24-hour light–dark cycle directly impacts our physiology and behavior. Indoors, reduced exposure to daylight and increased exposure to electric light after dark interferes with circadian rhythms. This course examines how circadian rhythms affect human performance, health, and well-being, the receptors in the eye that send visual and nonvisual responses to the brain, the action spectrum for circadian stimulus, and the metrics used to quantify circadian-stimulus light. Also presented are methods for applying circadian-effective lighting systems to satisfy the requirements of WELL Building Standard™ v2, Light, Feature L03, Circadian Lighting Design.

Presented by various experts on behalf of Spectrum Lighting.