Skip to Main Content

ultraviolet
Ultraviolet
UV
Electromagnetic radiation resembling visible light, but of shorter wavelength. The eye cannot see UV, and much of it is absorbed by ozone, a variant of oxygen, at altitudes of 30-40 km


Click for citation

ultraviolet radiation
Ultraviolet radiation
The energy range just beyond the violet end of the visible spectrum. Although ultraviolet radiation constitutes only about 5 percent of the total energy emitted from the sun, it is the major energy source for the stratosphere and mesosphere, playing a dominant role in both energy balance and chemical composition.


Click for citation

USAF
United States Air Force
USGS
United States Geological Survey
USRP
Undergraduate Student Research Program

Undergraduate Student Research Program