A bit of retro-technology for your Sunday afternoon :)
A magic lantern in a St. Petersburg museum, from
kavery
If you've read about these before, and want to see one closer up, as well as how it works, do take a look! This entry was originally posted at https://med-cat.dreamwidth.org/3340953.html. You can comment here, or there using OpenID if you prefer.
kavery
If you've read about these before, and want to see one closer up, as well as how it works, do take a look! This entry was originally posted at https://med-cat.dreamwidth.org/3340953.html. You can comment here, or there using OpenID if you prefer.