Time's Eye
What is a heliograph as noted in the book, Time’s Eye?
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Asked by
Jill W
Last updated by
Jill W
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Heliographs are simple, portable signaling devices which are primarily mirrors on foldaway tripods. A series of heliograph communication posts were set up around the hills between Jamrud and the Khyber and back towards Peshawar as well.
Time’s Eye