Researchers in Denmark have set a new world record in efficiency for converting sunlight into electricity by using new ...

Radiation within the visible spectrum can appear black if it is low ... People are good at adapting to a wide range of light levels, from sunlight to starlight. So our perception of color and ...

A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow, which is slightly larger and fainter than the first – and the colours are in the opposite ...

When we go out in the sun, our body tries to defend itself from the harmful ultraviolet (UV) rays in sunlight by producing ... normally only faintly visible to the naked eye, but clearly absorbing ...

(NEXSTAR) – A treat awaits sky gazers in the month of March – the moon will take on a deep, reddish hue as it slips into the Earth’s shadow during a total lunar eclipse. The celestial ...