In 1665, Isaac Newton discovered the spectrum of light by passing a beam of sunlight through a glass prism in his room. He also experimented with his own eyes by inserting a bodkin (a blunt needle) ...

Sundogs, also known as mock suns or parhelia, are bright patches of light that appear to the left, right, or sometimes on both sides of the real sun.

This important exhibition at the National Gallery in London is exactly the kind of thing our biggest public galleries – in ...

Our idea of historical figures is usually shaped by grand portraits, imposing sculptures, and movie versions enhanced with ...