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

Far in rear, upon a hill-top, a heliograph blinked and flickered in the sun.

From Across the Cameroons A Story of War and Adventure by Gilson, Charles

The only heliograph with the column had vanished in the stampede, and Carleton, encircled by musketry, knew that he was as powerless to obey the order as to acknowledge it.

From History of the War in South Africa 1899-1902 v. 1 (of 4) Compiled by Direction of His Majesty's Government by Great Britain. War Office

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