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If a person from 1700 asked you your job, would they understand your answer, and if not, how would you explain it to them? (lemm.ee)

submitted 8 months ago by JackGreenEarth@lemm.ee to c/asklemmy@lemmy.ml

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[–] hperrin@lemmy.world 1 points 8 months ago* (last edited 8 months ago)

Check it out:

https://en.wikipedia.org/wiki/Optical_telegraph

Optical telegraphs, also called semaphores, were invented in 1684, and first experimented in 1767. The most popular system was invented in 1792. There are a lot of hills around the US and Europe named “Telegraph Hill” because they used to be where an optical telegraph station was set up.

You’re thinking of the electric telegraph, which was indeed invented in 1837, and very quickly supplanted optical telegraphs. We now use the term telegraph almost exclusively to describe the electric telegraph, but someone from the 1700s wouldn’t know that.