catoptrics
நிழலுருவியல், இயற்பியலின் ஔதயியற் கூறான எதிர் ஔதக்கோட்ட இயல் துறை.
Ca*top"trics, n. Etym: [Cf. F. catoptrique. See Catropric.] (Physics) Defn: That part of optics which explants the properties and phenomena of reflected light, and particularly that which is reflected from mirrors or polished bodies; --- formerly caled anacamptics.