Raster Graphics - Etymology

Etymology

The word "raster" has its origins in the Latin rastrum (a rake), which is derived from radere (to scrape). It originally referred to the raster scan of cathode ray tube (CRT) video monitors, which paints the image line by line by magnetically steering a focused electron beam. By association, it came also to refer to a rectangular grid of pixels. See also rastrum, a device for drawing musical staff lines.

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