A source of light makes light. The Sun and other stars, fires, torches and lamps all make their own light and so are examples of sources of light. Some animals, such as fireflies and glow-worms ...

the question is just how many light sources should a living room have. As we find ourselves in 2025, our journey of discovering more showstopping living room lighting ideas continues on from last ...

This story appears in the March 2015 issue of National Geographic magazine. Watch. Steven Haddock, one of the world experts on life-forms that make light, is about to nudge the animal with a glass ...

A demonstration of how a source of light is required to see objects in the dark. The presenter shines a torch around a dark room and sees shiny and white objects. The presenter also shows Boffin ...

The emergence of convenient sources of broadband light spanning the visible and near-infrared is proving increasingly useful for applications involving spectroscopy, imaging and metrology ...