Our eyes work hard every single day, helping us see the world, read, work, and even relax by watching our favourite shows.

Lots of different sources produce light. Earth's main source of natural light is the Sun. At night, moonlight is created by the moon reflecting the Sun's light. This allows us to see at night ...

Architecture, which for millenniums was dependent on natural sources of light, has in the past century increasingly turned to artificial sources. In the long run it must perfect the integrated use ...

You are currently logged out. Please sign in to download the issue PDF. Architecture, which for millenniums was dependent on natural sources of light, has in the past ...

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 ...