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

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000698
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
June 04, 2024
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680 RICHARDSON'S BLUEBOOK OF PROJECTION very thin sheets by natural cleavage. It has an electrical resistance of 84,000,000,000,000 ohms per cubic centimeter when pure. Not affected by high temperatures, hence much used for arc lamp insulation. Mil A unit of length equal to 1/1000 of an inch. Employed for measuring electric conductors. â– Mil Foot Standard of Resistance Standard unit for measurement of resistance. It is the resistance offered by a wire one mil in diameter by one foot in length made when the wire is at normal temperature. For commercial copper it amounts to 10.50 ohms per mil foot. Millimeter Unit of length equaling 0.03937 of an inch. Usually expressed as mm, m.m. or m/m. Mis frame (a) An improperly made splice in which two adjoining frames are not present in their entirety, (b) Picture not in proper register over the projector aperture. Monitor Horn A loud speaker installed in the projection room. Multi Phase Term applied to systems having two or more current phases coupled together. "Polyphase" is the term more commonly applied. National Electric Code A book of rules and regulations* established by the National Board of Fire Underwriters for electric wiring and apparatus. *A copy should be in the library of every projectionist. It may be had by addressing the National Board of Fire Underwriters, Electrical Department, 85 John Street, New York City, New York. Enclose ten cents in stamps to cover nostap-p