An invisible band of radiation with wavelengths from 400 to 10 nm, ultraviolet (UV) light starts at the end of visible light and ends at the beginning of X-rays. The primary source of ultraviolet ...

For these people and those born without a lens, UV light looks like a pale blue or pale violet, Bok said. In a famous example, impressionist painter Claude Monet saw more blue and purple overtones ...

The UV light “excites” the electrons in the ink ... The flow chart below shows how they are different and gives examples of each type. Content provided by Young Post is pleased to partner ...

Three RIKEN physicists have discovered how tiny tubes of carbon spit out light that is more energetic than the light shone on them. This finding could help to exploit the process in applications such ...

"Though the storm appears red to the human eye, in this ultraviolet image, it appears darker because high-altitude haze particles absorb light at these wavelengths," NASA wrote. "The reddish ...