During the construction of the Hubble Space Telescope’s mirror, a device called a null corrector was used to shine a beam of...

Stories from Physics 11-14 14-16

A cloud of gas in the Milky Way was observed refracting the radio wave emissions of a distant quasar, to form multiple images...

Stories from Physics 11-14 14-16

Refraction due to the temperature gradients in the atmosphere can cause a number of mirage effects.

Stories from Physics 11-14 14-16

In around AD 200, Alexander of Aphrodisius observed that, during rain, the area between primary and secondary rainbows appears...

Stories from Physics 11-14 14-16

The green flash is a rare optical phenomenon visible at sunrise and sunset.

Stories from Physics 11-14 14-16