My name is Professor Lee, and I'll be showing you the way television and
computer screens work.The
Big Picture: Learn how the eye forms a single image from a collection of
dots, and how television sets use techniques like scanning to "fool"
our perception. Black
and White TV Screens: This section introduces you to the TV of the
ancient past, complete with Beaver Cleaver. Find out about cathode ray tubes and
electron beams. Use a magnet to steer an electron beam and watch it affect the
picture. Color TV
Screens: How many different colors make up your favorite shows? Learn
about the different ways that color is mixed, and how your TV makes yellow from
red and green. Laptop
Screens: Do laptop screens differ from desktop computer screens?
Discover how liquid crystal displays use the principle of polarization.