Heliograph crew, 1900 (c)
Photograph, Boer War (1899-1902), 1900 (c).
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 album of 160 photographs compiled by Private William Joseph North, Royal Army Medical Corps.
NAM Accession Number
NAM. 1975-04-28--105
Copyright/Ownership
National Army Museum, Out of Copyright
Location
National Army Museum, Study collection
Object URL
https://collection.nam.ac.uk/detail.php?acc=1975-04-28--105