heliograph

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Many of the instruments used in early operations of the United States Army Signal Corps were adaptations of equipment used by the Plains Indians, particularly that of the heliograph.

From SAT Tests

In the flash of heliograph signals in the North Sea haze and the speaking of great naval guns, the world has lately read a certain statement about the British Empire.

From Time Magazine Archive

To this shot the heliograph flashed a cordial expression of approval.

From The Siege of Mafeking (1900) by Hamilton, J. Angus

Then, you know, we could have carried on our little confab by flashes of the heliograph.

From The Boy Scouts Under Fire in Mexico by Payton, Lieut. Howard

It is used for visual signalling by hand, flag, Ardois lights, torches, heliograph, lanterns, etc., and for sound signalling with buzzer, whistle, etc.

From Scouting For Girls, Official Handbook of the Girl Scouts by Bacon, Josephine Dodge Daskam