wikipedia
English
Noun
en-noun
- An 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.
- obsolete A photograph.
Verb
en-verb
- transitive To send a message by heliograph.
- intransitive To send a heliograph.
Derived terms
heliographer
heliographic
heliography
Category:Light
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