from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of catoptric.
from the GNU version of the Collaborative International Dictionary of English
- n. That part of optics which explains the properties and phenomena of reflected light, and particularly that which is reflected from mirrors or polished bodies; -- formerly called anacamptics.
from The Century Dictionary and Cyclopedia
- n. That branch of the science of optics which explains the properties of incident and reflected light, and particularly the principles of reflection from mirrors or polished surfaces.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. branch of optics dealing with formation of images by mirrors
Sorry, no etymologies found.
Whatever the reasons, the fact is that considerable progress had already been made in both catoptrics, the study of reflected light, and dioptrics, the study of refraction.
The law of reflection was known as early as the time of Euclid, about 320 b.c., and to this geometrician was attributed, although probably erroneously, a "Treatise on Mirrors", in which the principles of catoptrics were correctly set forth.
30 This case contradicts a received principle in catoptrics