35.4 MB (3.2 MB compressed)
4270 x 2898 pixels
36.1 x 24.6 cm ⏐ 14.2 x 9.7 in (300dpi)
SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Close-up of part of a television screen showing two colours; green and magenta. The red, green and blue phosphor strips which make up the image are clearly visible. The colour seen by the eye at a given spot on the screen is made up of varying proportions of red, green & blue light, the strips being close enough together to be perceived by the eye as a single colour. The three colours are controlled by three separate electron beams, which scan across the screen line by line, producing a complete picture twenty five times each second. Variations in the intensity of the scanning beams control the intensity of the three colours at different points on the screen.
Model release not required. Property release not required.