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280 RICHARDSON'S BLUEBOOK OF PROJECTION
Rotating Shutter and Intermittent Speed, page 309
70. What is the relation between the speed of the intermittent movement and the width of the shutter master blade?
71. What is the relation between intermittent speed and the light that is allowed to pass by the rotating shutter ?
72. What are the limiting factors in intermittent speed?
The Modern Rotating Shutter, page 310
73. Did the old type of rotating shutter have any effect on the heat applied to the film?
74. Does the modern type rear shutter have any effect on the heat applied to the film?
The Disc Type Rear Shutter, page 311
75. How far is the rear shutter located from the aperture?
76. What is the relation of the rotary speed of the master blade edges to the distance between the shutter shaft and the center of the light beam ?
77. Though the time interval of cutting the beam is short why is its effect considerable ?
78. May either blade of most disc type rear shutters be used as the master blade ?
79. Do rear shutters create an air current at the aperture and thereby reduce aperture temperature?
The Horizontal, Cylindrical Type Shutter, page 312
80. Describe the horizontal cylinder type rotating shutter.
81. Describe the location and housing of the horizontal, cylindrical type shutter.
82. Why does the ratio between width and speed of the disc type shutter blades not apply to the Motiograph shutter ?
83. Does either blade of the Motiograph shutter act as both, master and cut-off blade?
84. Describe the double shutter of the Simplex E-7 projector.
85. How is it these shutters rotate in the same direction, yet have the effect of rotating in opposite directions?