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With a strength of three billion beam candle power
Photograph of a British anti-aircraft search light in London. Invented by a "Maj. J. Savage", it casts a wide beam in the form of a grid.
27.5 x 10.2 cm
- still image
- These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.
- The Janet A. Ginsburg Chicago Tribune Image Collection
- Chicago Sunday Tribune (December 27, 1931), p. 7
- Associated Press