Photoflash performance, graph (Redstone, CO) - 1953

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Description: (curated)

Graph illustrating the candlepower distribution for 1000 lumens in 60 degree cone, with (H. E. Edgerton's? annotations); likley posted at the June 1953 Heiland Engineering Conference in Redstone, Colorado. (CC)

HEE-SC-07804

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