heliograph
heliograph · heliographs
An apparatus for signalling by means of a moveable mirror which reflects flashes of…An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
US/ˈhiː.li.əˌɡɹæf/
Значення
значень: 5An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
A heliogram.
An instrument for measuring the intensity of sunlight.
A device for photographing the sun.
(застаріле)A photograph.
Ще визначення
- an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
Походження
From helio- + -graph.From helio- + -graph.
Wiktionary, CC BY-SA 4.0 · source
Форми
множина: heliographs| Однина | heliograph |
|---|---|
| Множина | heliographs |
правильне