US Army Signal station combining a heliograph with a telephone, 1908-1919. The heliograph wirelessly signaled Morse code with flashes of sunlight reflected in a mirror and timed by a hand operated shutter (BSLOC_2017_1_20)

US Army Signal station combining a heliograph with a telephone, 1908-1919. The heliograph wirelessly signaled Morse code with flashes of sunlight reflected in a mirror and timed by a hand operated shutter (BSLOC_2017_1_20)
SuperStock offers millions of photos, videos, and stock assets to creatives around the world. This image of US Army Signal station combining a heliograph with a telephone, 1908-1919. The heliograph wirelessly signaled Morse code with flashes of sunlight reflected in a mirror and timed by a hand operated shutter (BSLOC_2017_1_20) by Courtesy Everett Collection/Everett Collection is available for licensing today.
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DETAILS
Image Number: 4048-22159478Rights ManagedCredit Line:Courtesy Everett Collection/Everett Collection/SuperStockCollection:Everett CollectionContributor:Courtesy Everett CollectionModel Release:NoProperty Release:NoResolution:3000×2312
1910s
20th Century|
40-50 years old|
adult s|
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