Heliograph
From Cyborg Anthropology
Revision as of 22:31, 7 June 2012 by Caseorganic (Talk | contribs)
Heliograph - wireless solar telegraph that signals by flashes of sunlight http://en.wikipedia.org/wiki/Heliograph
Heliograph - wireless solar telegraph that signals by flashes of sunlight http://en.wikipedia.org/wiki/Heliograph