Nipkow disk
part · 1884 · Electric age
A spinning disc with holes for scanning an image.
Principles and materials it uses
- Steel — is made of. The disk is metal, with holes arranged in a spiral.
- Persistence of vision — uses. The lines merge into a frame thanks to persistence of vision.
Where it is used
- Mechanical television — is part of. Scanning with a Nipkow disk.