Welcome • User Guide
ToS • Privacy • Canary
Donate • Bugs • License

©2025 Poal.co

You are currently inside a comment thread.
Click here to see all the comments (5).
[–] • 1 pt

Read about these monstrosities in the book "Wunder der Wellen" (Miracles of Waves) by Eduard Rhein, when I was but a wee lad. The scanning disks were called "Nipkow-Scheibe".

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