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Heliograph, c1900

Heliograph, c1900

C045/3478

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Credit

ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY

Caption

Heliograph, c1900. The Heliograph, a visual telegraph for sending and receiving messages by means of mirrors and sunlight. Here a British signal unit in tropical kit is flashing a message to the fort in the distance. Trade card for Liebig Meat Extract.

Release details

Model release not required. Property release not required.

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