The advance of photography : its history and modern applications (1911)

Record Details:

Title:
The advance of photography : its history and modern applications
Date:
1911
Publisher:
London : K. Paul, Trench, Trübner & Co., Ltd.
Volume:
The advance of photography : its history and modern applications
Leaf #:
000438
Language:
English
Subjects:
Motion Pictures, Motion pictures--Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
November 02, 2023
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344 THE ADVANCE OF PHOTOGRAPHY the main lighting circuit, by using a suitable resistance in series. An arrangement of some sort is necessary to make and break the primary current at regular intervals. When this is done, a change of the magnetic field due to the core of the coil is constantly taking place, and a powerful current at a very high voltage is thus excited in the secondary circuit. For further details as to the action of this coil the reader Fig. 152. is referred to any one of the well-known text-books on magnetism and electricity. The general external appearance of the instrument is seen in the following diagram. A A are the primary terminals, to which the wires from the accumulators or other suitable source of electricity must be fastened. F F are the secondary terminals to which wires from the electrodes of the tube must be attached. Care must of course be taken to connect the kathode or negative