There is not much to do during spring break in Smallville except for going out and making your own fun. Now what I mean by that is you can have good fun. For example, you can go bowling, have a party or just chill out with your friends. Then there is bad fun.
Color television was demonstrated by John Baird as early as 1928, and a year later by Bell Telephone Laboratories. Experimental color broadcasting was initiated in 1940, when the Columbia Broadcasting System (CBS) publicly demonstrated a field sequential color television broadcasting system. This system employed successive fields scanned one at a time in one of the three primary colors; red, blue, or green. On the receiver end, a mechanical color wheel was used to reconstitute the primary colors in sequence to enable reproduction of the colors in the original scene.
A color TV screen differs from a black-and-white screen in three ways: 1  There are three electron beams that move simultaneously across the screen. 2  They are named the red, green and blue beams. 3  The screen is not coated with a single sheet of phosphor as in a black-and-white TV.o create a black dot, all three beams are turned off as they scan past the dot. All other colors on a TV screen are combinations of red, green and blue. In the next section, you'll learn about the color TV signal.