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Heliograph operating, South Africa, 1900
Photograph, Boer War (1899-1902), 1900.
Heliographs used a small mirror mounted on a tripod to reflect sunlight in order to flash messages in Morse code. In clear weather conditions and on open terrain their signals could be seen many miles away.
From an album of 144 photographs compiled by Sgn W H Harland, 17th (Duke of Cambridge's Own) Lancers, 1900-1901.
NAM Accession Number
NAM. 1966-10-59-111
Copyright/Ownership
National Army Museum, Out of Copyright
Location
National Army Museum, Study collection
Object URL
https://collection.nam.ac.uk/detail.php?acc=1966-10-59-111