Illustration showing a Mance Heliograph, a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror

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Illustration showing a Mance Heliograph, a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror

5311590 Illustration showing a Mance Heliograph, a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror. Henry Christopher Mance (1840-1926), of the British Government Persian Gulf Telegraph Department, developed the first widely accepted heliograph about 1869 in British India. 1880; (add.info.: Date: 1880); Universal History Archive/UIG

Media ID 38363336

© Universal History Archive/UIG / Bridgeman Images

1869 1880 British India C (european Economic Community) C (european Union) Heliograph Mirror Morse Code Reflected Signal Signals Solar Telegraph Wireless

EDITORS COMMENTS
This illustration showcases the innovative Mance Heliograph, a wireless solar telegraph developed by Henry Christopher Mance in 1869. The heliograph was used to signal messages using flashes of sunlight reflected by a mirror, typically employing Morse code for communication. This particular image dates back to 1880 and provides a glimpse into the fascinating world of early telecommunications technology. Henry Christopher Mance, who worked for the British Government Persian Gulf Telegraph Department, played a significant role in advancing long-distance communication with his groundbreaking invention. The heliograph proved to be an effective method for transmitting messages over vast distances where traditional telegraph lines were not feasible. The intricate details of this illustration capture the essence of this historical device, highlighting its importance in connecting people across great distances. The use of sunlight as a means of communication is both ingenious and practical, showcasing human ingenuity at its finest. As we admire this piece of technological history, we are reminded of the remarkable advancements that have shaped our modern world. The Mance Heliograph stands as a testament to human innovation and serves as a reminder of how far we have come in the realm of telecommunications.

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