Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 273
en, it is necessary toturn the valves slowly, so as to be able to stop when the 266 MOTION PICTURE ELECTRICITY right proportion is reached. The surface of the limeshould be about one-eighth to one-fourth of an inch fromthe opening of the jet, to obtain the best results. ADJUSTMENT OF LIGHT… … Fig. 127 a sharp clear image on the screen, remove slide and slide-holder, and examine the illuminated circle. If the lightis centered and the lamp correctly adjusted this circle willbe clear and entirely free from coloration or shadows. Fig. 127 illustrates the results of defective…
Motion picture theaters · Electric lighting
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