1) Apparatus 2) Setup 3) To photograph by sunlight 4) To send a heliograph
Found on
https://www.crosswordclues.com/clue/heliograph
A heliograph (Ἥλιος helios, meaning `sun`, and γραφειν graphein, meaning `write`) is a wireless solar telegraph that 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...
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http://en.wikipedia.org/wiki/Heliograph
instrument for measuring intensity of sunlight
Found on
http://phrontistery.info/h.html
• (n.) A picture taken by heliography; a photograph. • (n.) An apparatus for telegraphing by means of the sun`s rays. See Heliotrope, 3. • (n.) An instrument for taking photographs of the sun. • (v. t.) To photograph by sunlight. • (v. t.) To telegraph, or signal, with a heliograph.
Found on
http://thinkexist.com/dictionary/meaning/heliograph/
(from the article `military communication`) Another instrument was added to the techniques for visual signaling through the development of the heliograph. It employed two adjustable mirrors so ... British scientist and engineer who invented the heliograph, a signaling device that employs two mirrors to gather sunlight and send it to a ....
Found on
http://www.britannica.com/eb/a-z/h/33
A device for recording the positions of sunspots.
Found on
http://www.daviddarling.info/encyclopedia/H/heliograph.html
He'li·o·graph noun [
Helio- +
-graph .]ets>
1. A picture taken by heliography; a photograph.
2. An instrument for taking photographs of the sun.
3. An apparatus for telegraphing by means of the sun's rays. See
Heliotrope , 3.
Found on
http://www.encyclo.co.uk/webster/H/28
Heliograph, or heliostat is the name given to various contrivances for reflecting the sun's light either temporarily or continuously to an observer at a distance. The simplest heliostat is a mirror hung up at a distant station so as to reflect a flash to the observer whose station may be many miles from it. This mirror is generally so adjusted that...
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http://www.probertencyclopaedia.com/browse/AH.HTM
[
n] - an apparatus for sending telegraphic messages by using a mirror to turn the sun`s rays off and on 2. [v] - signal with a heliograph
Found on
http://www.webdictionary.co.uk/definition.php?query=heliograph
heliograph 1. An instrument that reflects sunlight to a remote station; used especially in signaling and surveying. 2. Name given to an engraving obtained by a process in which a specially prepared plate is acted on chemically by exposure to light. 3. An apparatus for taking photographs of the sun. 4. An instrument for measuring the intensity of s...
Found on
http://www.wordinfo.info/words/index/info/view_unit/2724/32
noun an apparatus for sending telegraphic messages by using a mirror to turn the sun`s rays off and on
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.
