Terms for subject Optics

English	German
critical angle	kritischer Winkel (total internal reflection)
critical angle	Grenzwinkel (total internal reflection)
critical angle condition	Grenzwinkelbedingung
critical aperture	kritische Blende (the aperture or stop opening at which maximum resolution occurs)
critical flicker frequency	kritische Frequenz
critical focussing	genaue Scharfeinstellung
critical focussing	Scharfeinstellung
critical fusion frequency	Verschmelzungsfrequenz
critical illumination	kritische Beleuchtung (method of microscopical illumination in which an image of the source is focussed by the substage condenser in the plane of the specimen)
critical illumination system	kritisches Beleuchtungssystem
critical slit width	kritische Spaltbreite (slit width below which no increase in resolution can be observed)
curve of the critical isotherm	Verlauf der kritischen Isotherme
sine of the critical angle	Sinus des Grenzwinkels