A soldier of the Northern Nigeria Regiment signalling with a heliograph, 1907 (c)
Photograph, West Africa, 1907 (c).
A heliograph was a device that used Morse code flashes of sunlight reflected by a mirror to send messages. The flashes were produced by momentarily pivoting the mirror, or by interrupting the beam.
From a collection of 41 lantern slides, collected between 1907-1911, by Lieutenant H R S Massy, Royal Artillery, attached to the Northern Nigeria Regiment, West African Frontier Force.
NAM Accession Number
NAM. 1999-02-15-20
Copyright/Ownership
National Army Museum, Out of Copyright
Location
National Army Museum, Study collection
Object URL
https://collection.nam.ac.uk/detail.php?acc=1999-02-15-20
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