| Kieli | Käännökset |
|---|---|
| italia | eliografo, eliofanografo |
| ranska | héliographe |
| suomi | heliografi |
| Partisiipin perfekti | heliographed |
| Imperfekti | heliographed |
| Partisiipin preesens | heliographing |
| Monikko | heliographs |
| Yksikön kolmannen persoonan indikatiivin preesens | heliographs |
An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
Fig. 1: Signaling with a Mance heliograph; Alaska–Canada border, 1910.
An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
Fig. 2: German heliograph made by R. Fuess in Berlin (on display at the Museum of Communication in Frankfurt)
An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
Fig. 3 Turkish / Ottoman Empire heliograph military crew at Huj during the First World War, 1917