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MOTION PICTURE PROJECTION 21
MOTOR REGULATOR. An adjustable rheostat used to regulate the speed of the motor.
MOVIES. Motion pictures.
MULTIPLE. Multiple connection is when each lamp draws its supply direct from the main and is not depending on any other lamp or set of lamps for supply.
MULTIPLE-REEL. A photoplay of more than a thousand feet of film in length.
NEGATIVE. The opposite to positive; the pole to which the current is supposed to flow.
NEGATIVE. The developed film, after being exposed in a camera.
NEGATIVE STOCK. Light, sensitive film intended for motion-picture camera use.
NON CONDUCTOR. Any material that does not conduct electricity.
OBJECTIVE. The picture-forming member (lens) of the optical system. The objective lens of a moving picture machine generally consists of four lenses, two in the front combination and two in the rear. The two lenses in the front are cemented together with Canada Balsam and called the compound lens. The back combination consists of two lenses separated by a metal ring, called the duplex lens.
The convex or greatest convex side of a lens always faces the screen.
OHM. The unit of electrical resistance.
OSCILLATION. A moving backward and forward; swinging like a pendulum.
OPTIENCE. A collection of persons assembled to see motion pictures.
PAM. Contraction for panorama.
PANORAM. The act of, or device for, turning a motionpicture camera horizontally, to photograph a moving object, or to embrace a wide angle of view.
PHOTOPLAY. A story in motion pictures.
POLARITY. Pertaining to the two opposite poles of a circuit; the positive and negative.
POLYPHASE. More than one phase, multiphase.
POSITIVE. The developed film, after being printed through a negative.
POSITIVE STOCK. The light-sensitive film intended to be printed upon through a negative.