A telescope which produces a magnified image by refracting light through a series of lenses housed in a tube, with a light-gathering objective lens at one end and an eyepiece at the other.

(optics) The angle between the perpendicular and a ray refracted at a surface

plural of refracting telescope

plural of angle of refraction

The separation of an incident ray of light into two refracted rays, polarized in perpendicular planes.

Synonym of atmospheric refraction

The apparent angular elevation of the heavenly bodies above their true places, caused by the refraction of the rays of light in their passage through the Earth's atmosphere.

Synonym of atmospheric refraction