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Indian signallers operating a heliograph, 1935 (b/w photo)

IMAGE number
NAM5924598
Image title
Indian signallers operating a heliograph, 1935 (b/w photo)
Auto-translated text View Original Source
Artist
Unknown photographer, (20th century)
Location
National Army Museum, London
Medium
black and white photograph
Date
1935 AD (C20th AD)
Image description

Indian signallers operating a heliograph, 1935. Photograph, India, North-West Frontier, 1935. The heliograph used a mirror to reflect sunlight to a distant observer. By moving the mirror, flashes of light could be used to send Morse code. It was an ideal tool in the mountainous wilderness of the North-West Frontier of India as it allowed long distance communication without a fixed infrastructure. From an album of 387 photographs compiled by Captain (later Major) Wynne Howes-Roberts, 1st Battalion 13th Frontier Force Rifles, 1935.

Photo credit
© National Army Museum / Bridgeman Images
Image keywords
signalling / communications / heliograph / Photograph / Photography / Mzphoto
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Copyright status
No Additional Copyright
Largest available format 4776 × 3653 px 12 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB]
Large 4776 × 3653 px 404 × 309 mm 11.7 MB
Medium 1024 × 783 px 87 × 66 mm 748 KB

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