Today's @cs4fn.bsky.social Christmas Computing Advent Calendar picture is of a candle which made me think of optical fibre, which reminded me of optical illusions, so this is a light-hearted (sorry) look at those, shining a torch (or candle) into the CS4FN archives :) cs4fn.blog/advent/
Every day in December a new ‘door’ will open and a new blog post about computing that is currently hidden behind it will become unlocked. We originally ran our advent calendar in 2021 a…
