| |
| | CalendarHome.com - Horizon - Calendar Encyclopedia |
 | | At many locations, the true horizon is obscured by trees, buildings, mountains, etc. The resulting intersection of earth and sky is instead known as the visible horizon. |
 | | While similar in ways to the geometical horizon described above, in this context a horizon may be considered to be a plane in space, rather than a line on a picture plane. |
 | | The distance of the horizon on earth, in a plain (standing on the ground or on a tower, or from an airplane) or on a hill or mountain surrounded by plains, is approximately |
| encyclopedia.calendarhome.com /Horizon.htm (736 words) |
|