In an art gallery or museum, the lighting is typically designed to reduce shadows and illuminate work using a spectrum that approximates, but rarely achieves, that of natural daylight. But daylight at ...

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 ...

Scientists have used a new lens to focus all the colors of the rainbow into one point. This is the first time a single lens has been used to focus the entire spectrum of light, including white light.