This phenomenon results from atmospheric refraction, where different wavelengths of light are bent by the atmosphere. Green ...

When a wave or light ray moves from one medium to another its speed changes. The direction of the ray may also change. This property of waves is called refraction and commonly occurs with light rays.

Light changes speed as it passes from one medium to another. This is called refraction. The frequency of light does not change as it refracts. The refractive index of a material is a measure of ...

We demonstrate the importance of atmospheric differential refraction, present calculations to predict the effect of atmospheric differential refraction, and finally discuss the implications of ...

Stargazers in Wotton-under-Edge were treated to an incredible spectacle on the night of the 17th April, as beams of white light lit up the sky. Whilst many mistook this beautiful wonder as the Aurora ...