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 Herbert Carter
To this shot the heliograph flashed a cordial expression of approval.
From The Siege of Mafeking (1900) by J. Angus Hamilton
Then a piece of mica, or a little pool, or even a highly polished leaf will flash like a heliograph.
From The Second Jungle Book by Rudyard Kipling
