Optical projection: a treatise on the use of the lantern in exhibition and scientific demonstration (1906)

Record Details:

Title:
Optical projection: a treatise on the use of the lantern in exhibition and scientific demonstration
Date:
1906
Author:
Wright, Lewis, 1838-1905
Publisher:
London, New York, Bombay : Longmans, Green and Co.
Volume:
Optical projection: a treatise on the use of the lantern in exhibition and scientific demonstration
Leaf #:
000118
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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LANTERNS AND THEIR MANIPULATION 103 sliding nozzle, and the whole pattern will closely resemble fig. 58. Such a lantern is often fitted with various objectives and a lengthening tube; and except as regards dissolving views, or dioramic effects, exhibits single slides in as perfect a manner as the more costly apparatus next to be described. . 58. — Single Mahogany Lantern 56. Dissolving Views. — This well-known effect of one picture imperceptibly melting into another, when first intro- duced, created an extraordinary sensation, but is produced in a perfectly simple manner. The fading and the coming slide each require a lantern, so that two lanterns are necessary : then the light is simply cut off gradually from one lantern, whilst it is as gradually turned on in the other. There is literally nothing else about it. The popularity of dissolving as an effect is largely a thing of the past ; but the method will be always used by exhibitors to a large extent, from its convenience in changing slides, the coming slide being placed ready in the dark lantern, ready to be dissolved into the other when required. The cases where it is of real value, are dioramic dissolving views ; such as where a ruin, first seen by day, changes gradually into a