Ultraviolet Wallpapers
Ultraviolet Wallpapers for your desktop, free to download
Ultraviolet Wallpapers for your desktop, free to download
Set in the late 21st century, a subculture of humans have emerged who have been modified genetically by a vampire-like disease (Hemophagia), giving them enhanced speed, incredible stamina and acute intelligence, and as they are set apart from "normal" and "healthy" humans, the world is pushed to the brink of worldwide civil war (a war between humans and hemophages) aimed at the destruction of the "diseased" population. In the middle of this crossed-fire is - an infected woman - Ultraviolet (Jovovich), who finds herself protecting a nine-year-old boy who has been marked for death by the human government as he is believed to be a threat to humans.

LiveScience.com - Set your ultraviolet rays to stun. Researchers have now developed a molecular on-off switch that can paralyze animals when they are exposed to ultraviolet beams.

LiveScience.com - Scientists claim to have created a form of aluminum that's nearly transparent to extreme ultraviolet radiation and which is a new state of matter.

AP - International cancer experts have moved tanning beds and other sources of ultraviolet radiation into the top cancer risk category, deeming them as deadly as arsenic and mustard gas.

Overcast days are the enemy of solar energy. Most photovoltaic cells respond to only a relatively narrow part of the sun’s spectrum--and it just happens to be the one that clouds tend to block out. Manufacturers deal with the problem by layering different materials in the cell, but that approach makes them more expensive.Led by chemist Malcolm Chisholm, a team at Ohio State University took a different tack. They doped a polymer commonly used for semiconductor applications, called oligothiophene, with atoms of the metals molybdenum and tungsten. The result was a substance that generates power in response to light of wavelengths from 300 (ultraviolet) to 1,000 nanometers (the near infrared). In contrast, traditional, silicon-based cells function best starting from 600 (orange) to 900 nanometers (deep red). The polymer can work at such a wide range because it both fluoresces and phosphoresces.