why old TVs used to imprint the image of whatever show played on them on the screen permanently? 80 viewsFebruary 19, 2022 0 Question0 February 14, 2022 1 Comment why old TVs used to imprint the image of whatever show played on them on the screen permanently? In: 2 fox-mcleod commented February 14, 2022 Old TVs are made of a cathode Ray tube. The image was drawn by a beam of electrons striking a phosphorescent powder on the front of the screen. If the same image was displayed too long, the electron beam could “burn” a pattern into that powder leaving a “burn in image”. 0 Answers ActiveVotedNewestOldest Register or Login
Old TVs are made of a cathode Ray tube. The image was drawn by a beam of electrons striking a phosphorescent powder on the front of the screen.
If the same image was displayed too long, the electron beam could “burn” a pattern into that powder leaving a “burn in image”.