heliograph


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Words related to heliograph

an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on

Related Words

signal by means of a mirror and the using the sun's rays

References in periodicals archive ?
In 1890, he equipped some Signal Corps units with the first heliographs in the Army, which used mirrors to reflect sunlight over long distances.
Gernsheim rushed to London, where he discovered that the tarnished mirror indeed was Niepce's heliograph.
When dense smoke rising from the chimneys of the Carnegie works rendered signaling with flags impossible, the penetrating power of the heliograph flash enabled troops on opposite sides of the river to maintain almost constant communication by day.
Bitumen of Judea is similar to asphalt and took ages to dry and the 1826 heliograph, literally meaning ``sun-written'', took a day to go off so although this process was the first, successful attempt, it was a dinosaur in relation to the development of photography.
The squadron included three signallers equipped with a heliograph, Begbie lamp and flags.
The Soldiers went to the post museum and to Tombstone where the NETCOM/9th ASC Historian Vince Breslin told them about the early life of the post, the capture of Geronimo and how heliograph stations (mirrors used to communicate) stretching east to central New Mexico and north to Flagstaff allowed the Army to keep in contact over long distances.
They set up their heliograph on monkey island, and maintained watch on the shore.
TradeFlow TPM was formerly a product of HelioGraph Ltd.
5 million worth of convertible subordinated notes during the quarter and announced two new business opportunities -the acquisition of London-based HelioGraph Ltd.
CheckFree Corporation today announced that it has completed the acquisition of HelioGraph Ltd.
HelioGraph, the financial messaging specialist, today announced the opening of its New York office in Manhattan, to support its growing North American client base and two key executive signings.
The CIF was tasked to operate forward of lines of communication and wireless had moved to the top of the list of alternatives, displacing everything from pigeons to heliographs.
AriaraOs decorative flair is accentuated by striking wall hangings, heliographs and ceramics made by Filipino artist Ugu Bigyan.
In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke, semaphore telegraphs, signal flags, and optical heliographs, or audio messages via coded drumbeats, lung-blown horns, or sent by loud whistles, for example.
Mosques and minarets flash like heliographs in the brilliant sunlight.