 |
| |||
| optical range; range of vision | |||
| local horizon; sensible horizon; terrestrial horizon; visible horizon | |||
| apparent horizon | |||
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips