The history of optical telegraphs (Language of Coins 5/9)

Title:
The history of optical telegraphs (Language of Coins 5/9)
Description:

History of optical telegraph signals from simple display to the eighteenth century semaphore telegraph. We will follow the ideas of Polybius, Aeneas Tactics, Sushruta, Francis Bacon, Robert Hooke and others.

Sources:
Communications: An International History of the Formative Years (Burns)
Understanding Media (McLuhan)
The Mathematical Theory of Communication (Shannon)
The Histories (Polybius)
translation link: http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Polybius/home.html)

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Video Language:
English
Duration:
09:20
http://www.youtube.com/watch?v=WrNDeYjcCJA
Format: Youtube
Primary
Original
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Format: Youtube
Primary
Original