1) German invention
Found on
https://www.crosswordclues.com/clue/nipkow-disk
A Nipkow disk (sometimes Anglicized as Nipkov disk; patented in 1884), also known as scanning disk, is a mechanical, geometrically operating image scanning device, invented by Paul Gottlieb Nipkow. This scanning disk was a fundamental component in mechanical television through the 1920s. == Design == The device itself is nothing more than a mechan...
Found on
http://en.wikipedia.org/wiki/Nipkow_disk
(from the article `Nipkow, Paul Gottlieb`) ...who discovered television`s scanning principle, in which the light intensities of small portions of an image are successively analyzed and ... ...sensors to convert an optical image into a sequence of electrical signals—in other words, to generate the primary components of the picture ....
Found on
http://www.britannica.com/eb/a-z/n/44
<microscopy> An opaque circular disk perforated with small holes arranged at equal angular separations and in an Archimedes spiral. The holes trace a raster scanning pattern when the disk is spun around its centre. The Nipkow disk was used in early experiments on television and more recently in Petrans confocal microscope. ... (05 Aug 1998) Ã...
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.
