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heliograph
he·li·o·graph / ˈhēlēəˌgraf/ • n. 1. a signaling device by which sunlight is reflected in flashes from a movable mirror. ∎ a message sent in such a way; a heliogram. 2. a telescopic apparatus for photographing the sun. 3. hist. a type of early photographic engraving made using a sensitized silver plate and an asphalt or bitumen varnish. • v. [tr.] 1. dated send (a message) by heliograph. 2. hist. take a heliographic photograph of. DERIVATIVES: he·li·o·graph·ic / ˌhēlēəˈgrafik/ adj. he·li·og·ra·phy / ˌhēlēˈägrəfē/ n. |
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"heliograph." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. "heliograph." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O999-heliograph.html "heliograph." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-heliograph.html |
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heliograph
heliograph [Gr.,=sun-writer], signaling device using flashes of sunlight. It has two mirrors that are used to reflect sunlight on a distant point and a shutter through which the sunlight passes so that messages may be transmitted in telegraphic code by means of long and short flashes. It was used in ancient times and as recently as the 19th cent. by the U.S. army in the SW United States and by the British army in India. |
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Cite this article
"heliograph." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. "heliograph." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1E1-heliogra.html "heliograph." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-heliogra.html |
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heliograph
heliograph
•barf, behalf, calf, chaff, coif, giraffe, Graf, graph, half, laugh, scarf, scrum half, staff, strafe, wing half
•headscarf • mooncalf • bar graph
•telegraph • polygraph • epigraph
•serigraph • cardiograph • radiograph
•spectrograph • micrograph
•lithograph • heliograph
•choreograph • tachograph
•stylograph • holograph • seismograph
•chronograph, monograph
•phonograph • paragraph
•cinematograph • pictograph
•autograph • photograph • flagstaff
•jackstaff • distaff • tipstaff • epitaph
•pikestaff • cenotaph
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Cite this article
"heliograph." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. "heliograph." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O233-heliograph.html "heliograph." Oxford Dictionary of Rhymes. 2007. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-heliograph.html |
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