- A material, usually a thin mica sheet, which on one side has a light-sensitive surface, and on the other a photoemissive surface. It is used in TV camera tubes, where the optical image is focused upon the first surface, and the equivalent electrical charge patterns produced on the other face are scanned by the electron beam of said tube. Also called mosaic (1).
- The pattern formed by the photosensitive globules of a photomosaic (1).
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