A surprising trick that allows a beam of light to be completely absorbed even in the thinnest of layers: Using mirrors and lenses, a 'light trap' can be constructed, in which the light beam is steered ...

Over time researchers have found fewer of the insects turning up in light traps, suggesting they may be less attracted to some kinds of light than they once were. By Veronique Greenwood It used to be ...

Whether in photosynthesis or in a photovoltaic system: If you want to use light efficiently, you have to absorb it as completely as possible. However, this is difficult if the absorption is to take ...