8 Nov
2006
8 Nov
'06
12:20 p.m.
At 05:30 AM 11/8/2006, you wrote:
I wonder if there were any electrically-operated
semaphore stations
around which pre-date wired telegraphy? Most countries had networks
of optical semaphores which could of course route a message (the
original idea seems to have cropped up in the 1600's) - but to my
knowledge they were all manual and only operable in daylight,
despite electricity being available long before the last ones closed
(mid 1800's I think). However it seems strange if the transition was
made straight to wired telegraphy with no intermediate system using
electric light.
cheers
Jules
Didn't the Indians use smoke signals? Also, I believe I
have read that in the middle ages in Europe they used bonfires to signal.
Cheers
Charlie Fox
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