Richardson's handbook of projection (1930)

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
0008
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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Important Notice Electric Current Action IN this work I shall adopt the latest theory of electric action, which holds that what we term electric current consists of minute particles of negatively charged electricity called "Electrons." Current flow is the movement of these particles. They flow or move from negative to positive, and not from positive to negative as was the formerly accepted theory. I am not proposing to take any part in any argument as to whether this theory is right or wrong. I merely am telling you it is now the theory accepted by scientists, hence we shall use it in this work. I make this explanation from the fact that at the time the Bluebook was compiled the positive-to-negative electrical movement was still held to be correct. The acceptance of the new theory is very recent. I commend this, my latest work, to projectionists, with full confidence that it will be welcomed and approved by them. It will be revised and improved from time to time, as may seem necessary.