Een enorme stap in de technologie om berichten te versturen was de optische telegraaf. Een merkwaardig systeem met beweegbare palen en telescopen bovenop kerktorens.

Leeslijst:

• https://en.wikipedia.org/wiki/Optical_telegraph#/media/File:Chappe_semaphore.jpg
• https://krisdedecker.typepad.com/photos/uncategorized/2008/03/05/optische_telegraaf.jpg
• https://nl.wikipedia.org/wiki/Semafoor_(communicatie)
• https://en.wikipedia.org/wiki/Royal_Road
• https://en.wikipedia.org/wiki/Battle_of_Marathon
• https://historyofinformation.com/index.php?cat=56&start=1&end=41
• https://www.lowtechmagazine.be/2007/09/e-mail-in-de-18.html

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Attributions

Music:

Waltz (Tschikovsky Op. 40) by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/4605-waltz-tschikovsky-op-40- License: http://creativecommons.org/licenses/by/4.0/

The Machine Thinks by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/4498-the-machine-thinks License: http://creativecommons.org/licenses/by/4.0/

Duet Musette by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/3685-duet-musette License: http://creativecommons.org/licenses/by/4.0/

Thinking Music by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/4522-thinking-music License: http://creativecommons.org/licenses/by/4.0/

Whiskey on the Mississippi by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/4624-whiskey-on-the-mississippi License: http://creativecommons.org/licenses/by/4.0/

Part of logo: By Wikimedia Foundation, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=10309782

Duurt: 00:14:24

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