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A woman examining prisms with a loupe, 1937

At a bench beside other women, a worker in a light blouse lifts a small triangular block of glass from rows of identical pieces and holds it close to the loupe in her eye; in close view her fingers turn the prism so that its faces catch the light. Prisms of this kind folded the light path in binoculars and rangefinders, instruments for which the army and navy were placing ever larger orders.

Period
c. June 26, 1937–October 8, 1937
Credit
Julien BryanLibrary of CongressDigitalisierung und Bearbeitung: © zb Media GmbH

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Specifications

Clip name
HFE026853
Length
0' 14"
Aspect Ratio
0:1
Frames per Second
24 fps
Chroma Subsampling
yuv422p10le
Resolution
1920 × 1080
Format
MOV
File Size
293,131,038 bytes
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