| | Encyclopedia :: encyclopedia : Radio (Site not responding. Last check: 2007-11-01) |
 | | Radio was used to transmit pictures visible as television as early as the 1920s. |
| | Radio was used to pass on orders and communications between armies and navies on both sides in World War I; Germany used radio communications for diplomatic messages once its submarine cables were cut by the British. |
| | Radio remote control: Use of radio waves to transmit control data to a remote object as in some early forms of guided missile, some early TV remotes and a range of model boats, cars and aeroplanes. |
| www.hallencyclopedia.com /Radio (3909 words) |
