a perforated metal plate situated behind the faceplate of a color television picture tube and having holes aligned to insure that each of three electron beams strikes only its corresponding red, green, or blue phosphor dot.
(television) a perforated metal sheet mounted close to the phosphor-dotted screen in some colour television tubes. The holes are positioned so that each of the three electron beams strikes the correct phosphor dot producing the required colour mixture in the image
noun, Navigation. 1. a vertical pin set in an azimuth instrument or at the center of a compass card, indicating by the direction of its shadow the azimuth of the sun.
noun 1. a show in which shadows of puppets, flat figures, or live actors are projected onto a lighted screen. noun 1. a theatrical entertainment using shadows thrown by puppets or actors onto a lighted screen
- Shadow price
noun 1. (economics) the calculated price of a good or service for which no market price exists
- Shadow ram
operating system A memory area in PC-AT compatibles used to store frequently accessed ROM code to speed up operation. (1995-01-16)