NO2 is the main source of nitrate aerosols, which form an important fraction of PM2.5 and, in the presence of ultraviolet light, of ozone.
A new polymer material that can repeatedly heal itself at room temperature when exposed to ultraviolet light presents the tantalizing possibility of products that can repair themselves when damaged.
Researchers have discovered that Arctic reindeer can see ultraviolet light that would blind humans.
In a trench dug by a University of South Florida Coastal Research Lab team, layers of oil-stained sand light up orange under ultraviolet light. Clean sand appears violet.
The latter type PROM is also known as an EPROM because it can be erased by ultraviolet light and reused.
During the final stage, the water is disinfected - by the addition of chlorine, hydrogen peroxide and other chemicals and by running it past ultraviolet lights.
The result is a “Russian-doll” droplet that, if the correct oily and aqueous liquids are chosen, can be made permanent by curing some of its layers into transparent polymers using ultraviolet light.
She and four other beagles all produce a fluorescent protein that glows red under ultraviolet light.
The supernova explosions that create and spread heavy elements also unleash a torrent of high-energy radiation: gamma rays, X-rays, and ultraviolet light.
If uncontrolled, the CFC assault on the ozone layer could increase the amount of hazardous solar ultraviolet light that reaches the earth's surface.
