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Heliograph   Listen
Heliograph

verb
1.
Signal by means of a mirror and the using the sun's rays.





WordNet 3.0 © 2010 Princeton University


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"Heliograph" Quotes from Famous Books



... of Brother Leo. The original autograph, which is preserved in the treasury of Sacro Convento, has been very well reproduced by heliograph.[27] ...
— Life of St. Francis of Assisi • Paul Sabatier
... by any "visual" method of signaling, such as flags, heliograph or lamp, it is necessary for the receiver to keep his eyes steadily fixed upon the sender, probably using binoculars or telescope, which makes it difficult, if not impossible, for him to write down ...
— The Emma Gees • Herbert Wes McBride


Words linked to "Heliograph" :   sign, signal, setup, apparatus, signalize, signalise


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