Licht, Ruhe- 



174 



Lichthof 



1., skylight. Ruhe- unmodulated 

 light, no-modulation 1., average 

 or steady illumination, no-sound 

 lighting (in sound recording). 

 See- marine phosphorescence. 

 Sofitten- overhead scoop, scaf- 

 fold light. Spitzen- highlights 

 (of a picture). Streu- stray 

 light. Sucher- searchlight. Süd- 

 aurora australis. Ton- exciter 

 lamp (operating a cell). Wechsel- 

 brightness variations (striking 

 photo-cell), light intensity v. 



Licht-abstufung gradation of light, 

 -anzeiger, Glimm- flashograph, 

 Tune-A-Light tuning device, 

 -ausbreitung auf Film distribu- 

 tion of exposure on film. 



Lichtbild photo-image, photograph. 

 -, unverg'angl iches imperishable 

 picture or photograph, -entzer- 

 rung rectification of aerial photo- 

 graphs, -kunst, Klein- micro- 

 photography, photomicrography. 



Licht-blende light stop, diaphragm, 

 apertured partition; light shield 

 (in sensitometer). -blitz pulse 

 of light, flash of 1., scintilla- 

 tion, -bogen, Erdungs- arcing 

 ground. 



lichtbogenbeständig arc-proof, a. 

 resistant. 



Lichtbogen-erdung arcing ground, 

 -loschkammer arc quench chamber. 



lichtbrechend optically refracting, 

 light r., refractive or refringent. 



Licht-brechungsvermogen (optical) 

 refractive power, refractivity. 

 -bUndel vi gnetti erung vignetting 

 of cone of light, -chaos chaotic 

 light (of eye or retina), photop- 

 sy. 



1 1chtchemisch photo-chemical, actinic. 



Lichtdampfer silk, light softener 

 (ro.p. studio). 



lichtdicht (sealed) light-tight or 

 1. -proof . 



Lichtdruck photo-mechanical printing; 

 photographic p. ; radiometer -vane 

 effect. 



lichtdurchlässig light transmissive 



or transmitting, diaphanous, per- 

 vious or permeable to light rays, 

 transparent, translucent. 



Lichtdurchlässigkeit light trans- 

 mittance, (specific) light trans- 

 mittancy. 



licht-echt fast to light, non-fading. 

 -elektrisch (cf photo-) photo- 

 electric; electronogenic. -elek- 

 trische, -empfindliche Zelle photo 

 (-electric) cell, light microphone, 

 -empfindlich machen photo-sensitize. 



Lichtempf Indl ich-keit photosensitivi- 

 ty; actinism, -keitskurve des Auges 

 response curve of eye. 



lichtentwickelnd emitting light, pro- 

 ducing 1., photogenic, with lumino- 

 phor properties. 



Lichter highlights (in pictures), 

 lights, transparent spots or areas 

 (in photography, printing, etc.). 

 -, gedeckte covered lights. 



lichterzeugend emitting light, pro- 

 ducing light, photogenic, with 

 luminophor powers. 



Licht-farbendruck photo-chemical 

 color printing, -filter light 

 filter, color f. -fleck hot spot 

 (on film); spot (of light), -fleck- 

 verzerrung spot distortion. 



lichtfreundlich favoring high lights 

 over shadows, photophilic, photo- 

 phi lous. 



Lichtfreundlichkeit light transmit- 

 tancy, 1. transmissivity. 



lichtgebend giving or emissive of 

 light, luminous, photogenic, with 

 luminophor properties. 



Licht-gewinn light increment, 1. 

 gain, -grammophon sound-track film 

 player (without pictorial accompani- 

 ment), -hahn electromagnetic 

 mirror vibrator (often) with oil 

 damping (for film recording by 

 variable-area method), -haut 

 cathode glow, -hof halation, halo, 

 -hof. Reflexions- halation by re- 

 flection. 



1 ichthoffreie Platte non-halation 

 plate, plate free from halo. 



Lichthof-schutzmi ttel anti-halo 



