The Spectrum UV from ASP Inc. is a unique, multi beam-color tactical flashlight. In addition to its primary white light, it offers red, blue and UV beams, as well as a low level and strobe, for a ...

Our ancestors had evolved the ability to see the full-color spectrum of visible light, except for UV around 30 million years ago; a new study has demonstrated. The scientists have finished a detailed ...

In the study of why and how animals look the way they do, color is king—at least, the range of color humans can see. A University of Michigan study has examined a color range that humans can't see and ...

Comparing our vision with that of birds, well, at least we can claim opposable thumbs. Birds see a vastly different world than we do. They see more detail. They see more colors, by a factor of 10.