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

They would not have been true Boy Scouts if they had not before now learned how to wigwag with flags, or lanterns, as well as use a looking-glass in the sun in heliograph telegraphy.

From The Boy Scouts in the Blue Ridge Marooned Among the Moonshiners by Carter, Herbert

The heliograph has told us the whole story, and now we know that the Boers had entrenched the whole of the north bank of the river for miles on either side of Colenso.

From With Rifle and Bayonet A Story of the Boer War by Brereton, F. S. (Frederick Sadleir)

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