F. H. Richardson's bluebook of projection (1935)

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092 RICHARDSON'S BLUEBOOK OF PROJECTION Screen, Brilliancy (a) Brilliancy of screen surface as measured in footcandles by a photometer, (b) Apparent brilliancy of screen as viewed from the auditorium. Screen Setting Immediate surroundings of the screen. Secondary Coil In a transformer, the coil that delivers secondary current. Secondary Current The current induced in the secondary coil of a transformer. The current delivered by a transformer. Secondary E.M.F. The power induced in a secondary transformer coil. Self Contained Term used to designate a machine all the essential parts of which are attached to one frame or carried on one foundation. Self Oiling Bearings Machine bearings that are oiled by some action of the machine itself. Series As applied to electrical equipment, lamps, etc., a connection so made that the current must pass successively through two or more of the devices so connected. Series Wound Dynamo One in which all current generated passes through the coils of the field magnet. Series Shunt Dynamo A dynamo, the field coils of which are wound with both shunt coils and a series winding.