| | Learn more about Radio in the online encyclopedia. (Site not responding. Last check: 2007-11-01) |
 | | It was Heinrich Rudolf Hertz who, between 1886 and 1888, first validated Maxwell's theory through experiment, demonstrating that radio radiation had all the properties of waves (then called Hertzian waves), and discovering that the electromagnetic equations could be reformulated into a partial differential equation called the wave equation. |
| | Radio was unique among dramatic presentation that it used only sound. |
| | Another effect is that the shorter radio waves act more like light, travelling in straight lines that are not reflected back towards the Earth by the ionosphere, resulting in a shorter effective reception range. |
| www.onlineencyclopedia.org /r/ra/radio.html (2589 words) |
