News tagged with uv radiation

Related topics: skin cancer

Using modern human genetics to study ancient phenomena

We humans are obsessed with determining our origins, hoping to reveal a little of "who we are" in the process. It is relatively simple to trace one's genealogy back a few generations, and there are many companies and products ...

Jul 31, 2015
popularity42 comments 7

Sorry, no news articles match your request. Your search criteria may be too narrow.

Ultraviolet

Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 10 nm to 400 nm, and energies from 3 eV to 124 eV. It is so named because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet.

UV light is found in sunlight and is emitted by electric arcs and specialized lights such as black lights. As an ionizing radiation it can cause chemical reactions, and causes many substances to glow or fluoresce. Most people are aware of the effects of UV through the painful condition of sunburn, but the UV spectrum has many other effects, both beneficial and damaging, on human health.

This text uses material from Wikipedia, licensed under CC BY-SA

Subscribe to rss feed