 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
 |
Most people have one or more T.V.'s in their house. Television is used for entertainment and to get information. Almost all T.V.'s today use a very important part called a Cathode Ray Tube (CRT) to display images. The tube is filled with gas and the power of a vacuum. The ray generates, and aims beams of color made up of electrons at the screen. The part we see is a screen covered with phosphor. |
| Phosphor is a material that, when exposed to energy gives off visible light. When the beam hits the screen, it will light up the setion it hit. Since the beam is very thin, the CRT has to scan across the screen many times to make an image appear. When the electron beam strikes the phosphor inside the screen, it makes the screen glow. This magnificent | |
|
Home | Communication
| Entertainment | Games
| About-Us | Credits
| Thinkquest |
|