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MANAGERS AND PROJECTIONISTS
The Exciting Lamp
What does the exciting lamp do? 1103
Describe the exciting lamp condenser 1103
What is the purpose of the exciting lamp condenser? 1103 Is it absolutely essential to good results that the
exciting lamp filament be in perfect condition?... 1057 Name the requisites for perfect performance, in so far as has to do with the exciting lamp and its
optical system 1057
What attention will the conscientious projectionist
give the exciting lamp every day ? 1057
Is it true economy to use an exciting lamp which has
a blackened globe or a sagged filament? 1059
Why will a sagged filament work harm to the results? 1059 Should you and how may you have a spare exciting
lamp ready for immediate use in case one fails?.. 1061 How would you proceed to test the exciting lamp filament image for correctness as to sidewise position? 1059
Describe the process of adjusting a Western Electric exciting lamp in the spare bracket so it will be
ready for immediate use. 1061
What should you do when you have completed the adjustment of an exciting lamp in the spare socket? 1066
The Slit
What is the "slit"? Describe it 1104
Name one prime requisite if the film sound recording
(variable density) is to be picked up correctly 1104
Why is the slit assemblage sealed in position? 1105
What would happen if the slit were not in exactly
its proper position ? 1105
Would the projectionist be justified in breaking the
slit assemblage seal under any condition? 1106
What amount of space on the film does the slit light
beam illuminate ? 1 106
Is the light from the slit of unvarying brilliancy
when it reaches the film sound band ? 1106
Is the light on the photo-electric side of the film
sound track of steady, unvarying brilliancy? 1106
What will the pick-up light beam on the P. E. side
of the film sound track be a reproduction of?.... 1107
Western Electric Disc Record Pick-Up System
What must be understood before the Western Electric Disc Record Pick-Up System can be itself understood ? 1 109