Here's one to look at https://en.wikipedia.org/wiki/Optical_telegraph
Giovanni Santostasi <gsantost...@gmail.com> wrote: What is the rate of transfer of information? Only a single bit one time? On Tue, Dec 28, 2021 at 5:43 PM Robin <mixent...@aussiebroadband.com.au> wrote: In reply to Giovanni Santostasi's message of Tue, 28 Dec 2021 17:35:35 -0800: Hi, Very inventive. :) However no human intervention possible. Method preferably electronic. >An arrow with a message written on a piece of paper wrapped around the >arrow. 50 meters should be a relatively easy shot.
