Definitions for heliograph
ˈhi li əˌgræf, -ˌgrɑfhe·li·o·graph

Princeton's WordNetRate this definition:5.0 / 1 vote

1. heliographverb

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

2. heliographverb

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

WiktionaryRate this definition:1.0 / 1 vote

1. heliographnoun

   An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.

2. heliographnoun

   A heliogram.

3. heliographnoun

   An instrument for measuring the intensity of sunlight.

4. heliographnoun

   A device for photographing the sun.

5. heliographnoun

   A photograph.

6. heliographverb

   To send a message by heliograph.

7. heliographverb

   To send a heliograph.

WikipediaRate this definition:0.0 / 0 votes

1. Heliograph

   A heliograph (from Ancient Greek ἥλιος (hḗlios) 'sun', and γράφειν (gráphein) 'to write') is a solar semaphor or optical telegraph system that emits signals by flashes of sunlight (generally using Morse code) reflected by a mirror. The flashes are produced by momentarily pivoting the mirror, or by interrupting the beam with a shutter. The heliograph was a simple but effective instrument for instantaneous optical communication over long distances during the late 19th and early 20th century. Its main uses were military, survey and forest protection work. Heliographs were standard issue in the British and Australian armies until the 1960s, and were used by the Pakistani army as late as 1975.

ChatGPTRate this definition:0.0 / 0 votes

1. heliograph

   A heliograph is a wireless telegraph communication device that uses sunlight reflection to convey messages, typically through Morse code. It uses mirrors or other types of reflective surfaces to reflect sunlight to a distant observer. Historically, it is mainly used for military or surveying purposes.

Webster DictionaryRate this definition:1.0 / 1 vote

1. Heliographnoun

   a picture taken by heliography; a photograph

2. Heliographnoun

   an instrument for taking photographs of the sun

3. Heliographnoun

   an apparatus for telegraphing by means of the sun's rays. See Heliotrope, 3

4. Etymology: [Helio- + -graph.]

WikidataRate this definition:0.0 / 0 votes

1. Heliograph

   A heliograph is a wireless solar telegraph that signals by flashes of sunlight reflected by a mirror. The flashes are produced by momentarily pivoting the mirror, or by interrupting the beam with a shutter. The heliograph was a simple but effective instrument for instantaneous optical communication over long distances during the late 19th and early 20th century. Its main uses were military, survey and forest protection work. Heliographs were standard issue in the British and Australian armies until the 1960s, and were used by the Pakistani army as late as 1975.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Heliograph

   hē′li-o-graf, n. an apparatus for signalling by means of the sun's rays: an engraving obtained by a process in which a specially prepared plate is acted on chemically by exposure to light: an apparatus for taking photographs of the sun.—v.t. to signal to by means of the sun's rays.—n. Heliog′rapher.—adjs. Heliograph′ic, -al.—adv. Heliograph′ically.—ns. Heliog′raphy, a method of communicating swiftly between distant points by means of the sun's rays reflected from mirrors: photography; Heliogrā′vure (or hā-li-ō-gra-vür′), photo-engraving, or a print obtained by this process. [Gr. hēlios, the sun, graphē, a painting—graphein, to write.]

The Standard Electrical DictionaryRate this definition:0.0 / 0 votes

1. Heliograph

   An apparatus for reflecting flashes of light to a distant observer. By using the Morse telegraph code messages may thus be transmitted long distances. When possible the sun's light is used.

Matched Categories

1. • Signal

Usage in printed sourcesFrom: 

1. [["1808","1"],["1815","1"],["1817","1"],["1843","1"],["1854","1"],["1855","7"],["1856","1"],["1857","1"],["1858","3"],["1859","6"],["1861","2"],["1862","46"],["1863","5"],["1864","12"],["1865","4"],["1866","1"],["1867","2"],["1868","16"],["1869","2"],["1870","10"],["1871","7"],["1872","3"],["1874","40"],["1875","17"],["1876","6"],["1877","34"],["1878","11"],["1879","20"],["1880","53"],["1881","222"],["1882","91"],["1883","76"],["1884","47"],["1885","55"],["1886","51"],["1887","59"],["1888","40"],["1889","113"],["1890","49"],["1891","66"],["1892","51"],["1893","153"],["1894","102"],["1895","108"],["1896","128"],["1897","128"],["1898","224"],["1899","241"],["1900","558"],["1901","315"],["1902","250"],["1903","177"],["1904","155"],["1905","168"],["1906","134"],["1907","152"],["1908","213"],["1909","149"],["1910","105"],["1911","177"],["1912","121"],["1913","105"],["1914","124"],["1915","132"],["1916","138"],["1917","232"],["1918","192"],["1919","111"],["1920","133"],["1921","54"],["1922","110"],["1923","105"],["1924","84"],["1925","53"],["1926","98"],["1927","58"],["1928","73"],["1929","76"],["1930","99"],["1931","85"],["1932","50"],["1933","32"],["1934","55"],["1935","70"],["1936","130"],["1937","87"],["1938","87"],["1939","63"],["1940","64"],["1941","54"],["1942","39"],["1943","27"],["1944","48"],["1945","27"],["1946","76"],["1947","49"],["1948","48"],["1949","96"],["1950","82"],["1951","89"],["1952","40"],["1953","55"],["1954","91"],["1955","100"],["1956","86"],["1957","72"],["1958","97"],["1959","77"],["1960","115"],["1961","78"],["1962","140"],["1963","141"],["1964","181"],["1965","213"],["1966","172"],["1967","140"],["1968","161"],["1969","241"],["1970","196"],["1971","223"],["1972","160"],["1973","192"],["1974","153"],["1975","147"],["1976","137"],["1977","192"],["1978","194"],["1979","187"],["1980","165"],["1981","108"],["1982","122"],["1983","172"],["1984","171"],["1985","187"],["1986","176"],["1987","191"],["1988","173"],["1989","256"],["1990","282"],["1991","151"],["1992","210"],["1993","192"],["1994","154"],["1995","190"],["1996","234"],["1997","150"],["1998","297"],["1999","359"],["2000","323"],["2001","321"],["2002","308"],["2003","412"],["2004","585"],["2005","478"],["2006","462"],["2007","605"],["2008","1231"]]

How to pronounce heliograph?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say heliograph in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of heliograph in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of heliograph in Pythagorean Numerology is: 9

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=heliograph
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Heliograph
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Heliograph
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/heliograph
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=heliograph
7. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=heliograph
8. ^ The Standard Electrical Dictionary
   https://www.gutenberg.org/cache/epub/26535/pg26535-images.html#:~:text=heliograph
9. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=heliograph