Question

define atmoshpheric refraction

Answer 1

Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through theatmosphere due to the variation in air density as a function of height. ... Astronomical or celestial refractioncauses astronomical objects to appear higher in the sky than they are in reality.

Answer 2

the bending up of light rays due to different optical density of atmosphere is known as atmospheric refraction