Raster scan
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A raster scan, or raster scanning, is the rectangular pattern of image capture and reconstruction in television. By analogy, the term is used for raster graphics, the pattern of image storage and tran
Raster-scan display sample; visible gaps between the horizontal scan lines divide each character
Monochrome CRTs lack individual pixels. Instead, they draw the picture as a series of continuous lines varying in luminosity, as in this image from a slow-scan TV broadcast of Apollo 7. (Click the image to englarge.)
Cathode ray tube
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A cathode ray tube is a vacuum tube containing one or more electron guns, which emit electron beams, which are directed and controlled to display images on a phosphorescent screen. The images may repr
Raster scan
…and is dwarfed in effect by screen convexity and other modest geometrical imperfections. There is a misconception that once a scan line is complete, a cathode-ray tube (CRT) display in effect suddenly jumps internally, by analogy with a typewriter or printer's paper advance or line feed, before creating the next scan…
Oscilloscope cathode ray tube
A Macintosh computer from the 1990s with integrated CRT display
The rear of an LG.Philips Displays 14-inch color cathode ray tube showing its deflection coils and electron guns
Typical 1950s United States monochrome CRT TV