| A | B |
|---|
| electronic signal | where the TV broadcast starts |
| broadcast | a signal sent from a transmitter |
| filament | thin wire, usually made of tungsten, that emits light when heated by an electric current |
| backlight | very bright light source located at the back of the TV |
| filter | what happens to the light waves so that they all move along the same path |
| liquid crystal | plasma displays (LCD) |
| helix | shape that looks like a strand of DNA |
| pixel | the red, green and blue filters together |
| plasma | they have millions of tiny cells filled with a mixture of gases that release UV light |
| ionize | charged |
