HELIOGRAPH

heliograph

(noun) an apparatus for sending telegraphic messages by using a mirror to turn the sun’s rays off and on

heliograph

(verb) signal by means of a mirror and the using the sun’s rays

Source: WordNet® 3.1


Etymology

Noun

heliograph (plural heliographs)

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

A heliogram.

An instrument for measuring the intensity of sunlight.

A device for photographing the sun.

(obsolete) A photograph.

Verb

heliograph (third-person singular simple present heliographs, present participle heliographing, simple past and past participle heliographed)

(transitive) To send a message by heliograph.

(intransitive) To send a heliograph.

(transitive, dated) To photograph by sunlight.

Source: Wiktionary


He"li*o*graph, n. Etym: [Helio- + -graph.]

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.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

1 February 2025

GRIP

(noun) an intellectual hold or understanding; “a good grip on French history”; “they kept a firm grip on the two top priorities”; “he was in the grip of a powerful emotion”; “a terrible power had her in its grasp”


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Coffee Trivia

An article published in Harvard Men’s Health Watch in 2012 shows heavy coffee drinkers live longer. The researchers examined data from 400,000 people and found out that men who drank six or more coffee cups per day had a 10% lower death rate.

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