http://scienceblogs.com/dotphysics/2010/07/how_fast_is_the_beacon_of_gond.php
Around the Civil War [sic], Morse signals from Washington DC could be sent to San Francisco. This is how the news of Lincoln's assassination was dissiminated. Of course when it was raining, you had to wait. Under ideal conditions, it took about a few hours or so.
http://en.wikipedia.org/wiki/Heliograph
Larry
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