Heliograph (disambiguation)

Heliograph (disambiguation)

Heliograph is a word derived from "helios" (Greek Ἥλιος / ἥλιος "sun") and "graphein" (γραφειν "to write"). It has several uses:
* the heliograph, a device used for optical signalling
* a type of sunshine recorder
* a solar telescope, a telescope especially adapted for viewing the surface of the sun (obsolete).
* a camera especially adapted for photographing the sun; also called a "photoheliograph" (obsolete).


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Steampunk — This article is about the genres of fiction and associated sub culture. For other uses, see Steampunk (disambiguation). A steampunk themed photo Steampunk is a sub genre of science fiction, fantasy, alternate history, and speculative fictio …   Wikipedia

  • Mirror — looking glass redirects here. For other uses, see Looking Glass (disambiguation). This article is about wave reflectors (mainly, specular reflection of visible light). For other uses, see Mirror (disambiguation). A mirror, reflecting a vase A… …   Wikipedia

  • Semaphore line — This article is about the communication system using towers with pivoting shutters. For other uses, see Semaphore (disambiguation). For the now closed railway in Adelaide, Australia, see Semaphore railway line, Adelaide. A Chappe telegraph at… …   Wikipedia

  • Beacon — For other uses, see Beacon (disambiguation). A beacon is an intentionally conspicuous device designed to attract attention to a specific location. Beacons can also be combined with semaphoric or other indicators to provide important information,… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”