Welcome to Part 3 of our 5 part series on Communication Evolution
                                                                       The heliograph

A heliograph (from Ancient Greek ἥλιος (hḗlios) 'sun', and γράφειν (gráphein) 'to write') is a semaphore system that signals by flashes of sunlight (generally using Morse code) reflected by a mirror. The flashes are produced by momentarily pivoting the mirror, or by interrupting the beam with a shutter.[1] The heliograph was a simple but effective instrument for instantaneous optical communication over long distances during the late 19th and early 20th century.[1] Its main uses were military, survey and forest protection work. Heliographs were standard issue in the British and Australian armies until the 1960s, and were used by the Pakistani army as late as 1975.[2]

In this episode we learn about this forgotten form of communication. The heliograph is the forerunner to fiber optics. 

Using the idea of mirrors its important to discuss how our communications mirrors 
The UC Moment is:
Our actions Mirrors our thoughts. Our words are the mirror of our soul. 

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