Abstract: A light engine that produces UVA1 light, but not UVA2 or UVB radiation, that will provide a human or animal subject a beneficial application of artificial UVA1 light without the deleterious effect of the UVA2 and UVB light. Methods of providing UVA1 light to the human or animal subject over various periods of time provide positive treatments that can reduce stress, reduce anxiety, increase a pain threshold, and induce interferon production. Exposure to UVA1 wavelength light (360-400 nm) provides a positive effect on both humans and animals. This is especially true when the humans or animals do not receive UVB and UVA2 at the time that the UVA1 light is received, and the ratio of UVA1 light to (UVA1 light+visible light) is greater than 10%.

Abstract: A light engine that produces UVA1 light, but not UVA2 or UVB radiation, that will provide a human or animal subject a beneficial application of artificial UVA1 light without the deleterious effect of the UVA2 and UVB light. Methods of providing UVA1 light to the human or animal subject over various periods of time provide positive treatments that can reduce stress, reduce anxiety, increase a pain threshold, and induce interferon production. Exposure to UVA1 wavelength light (360-400 nm) provides a positive effect on both humans and animals. This is especially true when the humans or animals do not receive UVB and UVA2 at the time that the UVA1 light is received, and the ratio of UVA1 light to (UVA1 light+visible light) is greater than 10%.

Abstract: Methods of utilizing light during incubation of avian eggs to influence characteristics of avian pre- and post-hatch. Specific amounts of energy are provided to incubated eggs through a light source, having particular wavelengths, to accelerate embryo development and promote myogenesis post hatch. Green, red, or blue wavelengths of light, or combinations thereof, are provided to eggs in a temperature controlled incubator to increase myoblast and satellite cell production in avian eggs. The light can be administered to avian eggs in a manner that entrains an embryo's circadian rhythm in the egg.

Abstract: A system for entraining a circadian rhythm of a living organism. A lighting system with at least one lighting element emitting light substantially concentrated in a narrow range between 360 NM-400 NM to be absorbed by neuropsin. A controller having a timing mechanism to provide the light substantially concentrated in the narrow range between 360 NM-400 NM at intervals during a day. The controller configured to set the intervals during the day based on a local time to entrain the circadian rhythm of the living organism.