DIOPTRICS


Meaning of DIOPTRICS in English

noun the science of the refraction of light; that part of geometrical optics which treats of the laws of the refraction of light in passing from one medium into another, or through different mediums, as air, water, or glass, and ·esp. through different lenses;

— distinguished from catoptrics, which refers to reflected light.

Webster English vocab.      Английский словарь Webster.