The motion picture projectionist (Nov 1930-Oct 1931)

March, 1931 Motion Picture Projectionist 39 sound track and pictures. BASE. (1) Celluloid component of film. This is the usual meaning of the word in cinematography. (2) In chemistry, a hydroxide. BATH. Any chemical solution used in treating photographic materials. BATTERY, "A," "B," and "C." See respective letters. BEATS. Vibrations produced by interference between two or more wave-lengths. BEE. Equals ten decibels. BINAURAL. Pertaining to both ears. BLANKET, MIKE. See microphone blanket. BLEEDING. Distortion of image, due !o spreading of colors, in tinting or toning film. BLIMP. Soundproofed covering built around the camera. Interchangeable term Lor bungalow. Dull thud emitted in due to a poorly made To prepare a bloopiug BLOOP, noun, sound reproduction, blooping patch. BLOOP, verb, patch. BLOOPING PATCH. Triangular or oval Mack section introduced over a splice in the positive sound track, to prevent the noise which the splice would otherwise cause during reproduction. The patch effects a relatively gradual diminution in the transmitted light, followed by gradual restoration to the original value. The sound frequency due to a properly blooped patch is too low to be heard ; but see bloop. BLOPS, O. K. ON THE. See O. K. on the blops. a , BLUE GLASS. A monocle-shaped glass of special blue tint used by cinematograph ers to determine color values of a set, when photographing on orthochromatic emulsions, or to judge the lighting conditions on the set when photographing with panchromatic emulsions. (In the latter case the glass is not necessarily blue ; any glass of low transmission, with which the cinematographer has had experience, will do.) BLUE LIGHT. In certain studios, signal that monitor man is ready and standing by for a take. BOOM, MICROPHONE. See microphone boom. BOOMY. Same as all bottom. BOOTH, CAMERA. See camera booth. BOTTOM. Low-frequency sounds. BOUNCE. Same us brilliance, particularly with regard to the factor of reverberation. BREAKAWAY. A prop or set that has been especially prepared to fall apart or fracture easily. BREAKER, CIRCUIT. See circuit breaker. BREEZING. Said to occur when projected picture is blurred as a result of distortion of focus in camera, printer, or projector— due to uneven shrinkage of negative or positive, or to perforations of uneven pitch. BRIDGING AMPLIFIER. Any amplifier of relatively high input impedance, so that a number of such units may be connected in multiple across a relatively low impedance circuit without materially affecting its electrical condition and without reaction on one another. Abbreviated B.A. BRIGHT. Refers to brilliance. BRILLIANCE. A sound record possesses brilliance if it contains plenty of high frequencies and is therefore rich in overtones, and if it is recorded inadequately reverberant surroundings. BROAD, BROADSIDE. Type of incandescent flood lamp. BROMIDING. As developer is used over and over, bromide is deposited in it by the emulsion developed. The presence of this bromide increases the inertia of the developed film. BUCKLING. Jamming of film in camera, printer, or projector, usually due to intense heat, or to improper threading up. BUG. An insect that flies acros the set while the camera is operating, usually requiring that the scene be done over again. BULL SWITCH. Electrical switch for controlling lights. BUMPS. Low-frequency sounds, heard HIGH INTENSITY SPOTLIGHT MORE AND BETTER STAGE LIGHTING AT LESS EXPENDITURE OF ELECTRICAL ENERGY. MOST REMARKABLE RESULTS ON LARGE STAGE SETS. HALL & CONNOLLY, INC. 24 Van Dam St. New York, N. Y. Your Preference, Please! THE editors of THE MOTION PICTURE PROJECTIONIST solicit your aid to the end that this publication may be of the maximum service to you. Every subscriber can do his bit to improve this service by using the space provided below to indicate his preference for special articles and other material in which he may be particularly interested. Let us know your preference, please. All requests will receive attention in the order of their receipt, so act quickly. Use the blank below to tell us in just what subject you are particularly interested. Do it now! Editor, M. P. PROJECTIONIST: I am interested in the following subjects, on which I should like to see information in THE MOTION PICTURE PROJECTIONIST: 1. 2 3 4 NAME ADDRESS