Discussion about Wilbur Smith's Ballantyne series


Postby Ramon » Mon Apr 02, 2007 2:36 am

In "Men of men" a gizmo called a Heliograph is being used. I had never heard of that before, and although I understood how it worked from the book, I searched the Internet and found this on Wikipedia.


The best part in that article is:

By the time the mirror instruments were retired in 1941, they were seldom used for signalling. Still, the army hated to see them go as "They made damn fine shaving mirrors."
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Re: Heliograph

Postby Danny Ramone » Sun Oct 21, 2007 3:17 am

Definitely a good way of doing it before the invention of the radio, can send information over long distances in a relatively short time. I can see how they made good shaving mirrors. These days the wing mirror on the landy is a good subsitute
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