Sound is still more reliable, easy to produce and receive, cheaper electronics involved and can carry more info if needed. You also don't need to focus it. Why not to go with this solution?
On Tue, Dec 28, 2021 at 7:24 PM Robin <mixent...@aussiebroadband.com.au> wrote: > In reply to Jones Beene's message of Wed, 29 Dec 2021 02:16:22 +0000 > (UTC): > Hi, > [snip] > > Here's one to look at > >https://en.wikipedia.org/wiki/Optical_telegraph > > > Actually I considered a mirror system, but it wouldn't work on cloudy days. > Regards, > > Robin van Spaandonk <mixent...@aussiebroadband.com.au> > >
