Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000129
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
March 28, 2024
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LIGHT CONDITIONS 113 can only be secured by the use of the best grade carbons of the correct size and type for the amperage employed. (d) — The carbons may not be properly aligned. These should be examined and corrected if they are found faulty. (e) — A draughty lamphouse is another common cause for this trouble. In this case, the gas is being blown out of the crater by strong air currents on the carbon tips. Ample ventilation and clean vents are extremely important. Avoid openings which allow strong air currents to blow on the lamp or on the carbon tips. 11. Poor Lighting With Reflector Arc (a) — Crater position is bad, crater angles, etc. Look under section headed, Light Source. (b) — The mirror may not be at a correct distance from the arc and is therefore wasting the light. This should be corrected. (c) — Look for oil or dirt on the lenses and see whether the mirror is dirty, for these are constant sources of this trouble. 12. Lighting Glarey and Harsh When Light Source Is Changed (a) — In all probability the screen is not adapted to the new lighting. The various arcs such as