The audio-visual handbook (1942)

Record Details:

Title:
The audio-visual handbook
Date:
1942
Publisher:
Chicago : Society for Visual Education, Inc.
Volume:
The audio-visual handbook
Leaf #:
00066
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
May 09, 2024
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50 The Audio-Visual Handbook other may be made almost instantly. It is possible, therefore, to supplement available glass slides with reflected pictures which the teacher might select for special teaching situations. Photo Courtesy Spencer Lens Co. Opaque Projector in Classroom Use It is possible, also, to secure a filmslide attachment for the opaque projector but usually desirable to secure a separate filmslide projector, in order that the two units might be used simultaneously in different parts of the building or school system. A filmslide attachment costs $38.50 and good separate filmslide projectors range in price from $25.00 to $52.00, so the inconvenience of moving the entire projector from place to place in order to use the attachment is not offset by a comparable saving in cost. Accordingly, it is recommended that the more convenient separate filmslide projector be used. Limitations: Although there are many points in favor of the opaque projector, there are some limitations which should be mentioned. The greatest, perhaps is that a rather thorough darkening of the room is necessary for opaque projection. Since the picture is reproduced by reflection rather than by projection, much of the light is lost. If the room in which the projector is to be used can be darkened thoroughly, the result will be rather satisfactory. In some