Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 61
motionbe varied ? MOTION PICTURES 2,715 Ans. By making the disc large in proportion to the cross. The interval of movement can be reduced as much as desired inproportion to the interval of rest, but the characteristic features ofstarting and stopping the film gradually will be lost directly in… … Fig 3 856.—Powers motion picture machine or Cameragraph; view showing lamp house andmachine with covers removed, exposing mechanism. 2,716 HAWKINS ELECTRICITY Illumination for Motion Picture Projection.—Both gasand electricity are used to produce illumination for motion pictureprojection. The…
Electrical engineering
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