Refraction is the bending of light rays. Normally, light travels in a straight line, and changes direction and speed when it passes from one transparent medium to another, such as from air into glass.

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or ...

Google has marked the 340th anniversary of the discovery of the speed of light in its latest Doodle. The image on the search page features Danish astronomer Olaus (Ole) Roemer, who is considered ...

The 340th anniversary of Ole Roemer's experiment to demonstrate the speed of light has been celebrated in a Google doodle. But who is the astronomer and how did he make this significant discovery?