Heliographs

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Neilster
Posts: 3011
Joined: Mon Oct 27, 2003 1:52 pm
Location: Devonport, Tasmania, Australia

Heliographs

Post by Neilster »

A short video on heliographs, which were Victorian Era solar communication devices. This guy's channel is excellent and covers a wide range of older technologies, many of them military.

https://www.youtube.com/watch?v=zhFevbuwS88
Cheers, Neilster
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altipueri
Posts: 1109
Joined: Sat Nov 14, 2009 9:09 am

Re: Heliographs

Post by altipueri »

My father maintained that he was the last person alive who knew how to assemble and use a British Army heliograph - still being used in India in WW2.
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