Scientists Test Auto Ignition

Two engineers at the US Bureau of Standards use a cathode ray oscillograph to test characteristics and effectiveness of various types of sparks used for automobile engine ignition, Washington DC, August 22, 1931. (Photo by Underwood Archives/Getty Images)
Two engineers at the US Bureau of Standards use a cathode ray oscillograph to test characteristics and effectiveness of various types of sparks used for automobile engine ignition, Washington DC, August 22, 1931. (Photo by Underwood Archives/Getty Images)
Scientists Test Auto Ignition
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Credit:
Underwood Archives / Contributor
Editorial #:
529089973
Collection:
Archive Photos
Date created:
August 22, 1931
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Release info:
Not released. More information
Source:
Archive Photos
Barcode:
ARC0001598_019
Object name:
1-Sci-W-M_2HR.jpg
Max file size:
4800 x 3812 px (16.00 x 12.71 in) - 300 dpi - 7 MB