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It isn't explained but what is that image at the beginning and what are the things sticking out the sides?
by politelemon 3y ago
It isn't explained but what is that image at the beginning and what are the things sticking out the sides?
- Swizec 3y agoThat’s an example of the optical telegraph the article is about. A person inside uses levers to move those arms into different positions. Each position has a meaning, similar to naval flags. Other towers in visual range can then re-transmit the message to towers further down range. Same as clacks in Discworld – https://discworld.fandom.com/wiki/Clacks https://discworld.fandom.com/wiki/Clacks edit: here’s a wikipedia with more examples of different semaphor towers https://en.wikipedia.org/wiki/Optical_telegraph https://en.wikipedia.org/wiki/Optical_telegraph