Astronomical clock

Astronomical clock
Clock Clock (kl[o^]k), n. [AS. clucge bell; akin to D. klok clock, bell, G. glocke, Dan. klokke, Sw. klocka, Icel. klukka bell, LL. clocca, cloca (whence F. cloche); al perh. of Celtic origin; cf. Ir. & Gael. clog bell, clock, W. cloch bell. Cf. {Cloak}.] 1. A machine for measuring time, indicating the hour and other divisions; in ordinary mechanical clocks for domestic or office use the time is indicated on a typically circular face or dial plate containing two hands, pointing to numbers engraved on the periphery of the face, thus showing the hours and minutes. The works of a mechanical clock are moved by a weight or a spring, and it is often so constructed as to tell the hour by the stroke of a hammer on a bell. In electrical or electronic clocks, the time may be indicated, as on a mechanical clock, by hands, but may also be indicated by direct digital readout, with the hours and minutes in normal Arabic numerals. The readout using hands is often called analog to distinguish it from the digital readout. Some clocks also indicate the seconds. Clocks are not adapted, like the watch, to be carried on the person. Specialized clocks, such as {atomic clocks}, may be constructed on different principles, and may have a very high precision for use in scientific observations. [1913 Webster +PJC]

2. A watch, esp. one that strikes. [Obs.] --Walton. [1913 Webster]

3. The striking of a clock. [Obs.] --Dryden. [1913 Webster]

4. A figure or figured work on the ankle or side of a stocking. --Swift. [1913 Webster]

Note: The phrases what o'clock? it is nine o'clock, etc., are contracted from what of the clock? it is nine of the clock, etc. [1913 Webster]

{Alarm clock}. See under {Alarm}.

{Astronomical clock}. (a) A clock of superior construction, with a compensating pendulum, etc., to measure time with great accuracy, for use in astronomical observatories; -- called a regulator when used by watchmakers as a standard for regulating timepieces. (b) A clock with mechanism for indicating certain astronomical phenomena, as the phases of the moon, position of the sun in the ecliptic, equation of time, etc.

{Electric clock}. (a) A clock moved or regulated by electricity or electro-magnetism. (b) A clock connected with an electro-magnetic recording apparatus.

{Ship's clock} (Naut.), a clock arranged to strike from one to eight strokes, at half hourly intervals, marking the divisions of the ship's watches.

{Sidereal clock}, an astronomical clock regulated to keep sidereal time. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Astronomical clock — Astronomical As tro*nom ic*al ( [i^]*kal), a. [L. astronomicus, Gr. astronomiko s: cf. F. astronomique.] Of or pertaining to astronomy; in accordance with the methods or principles of astronomy. {As tro*nom ic*al*ly}, adv. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Astronomical clock — An astronomical clock is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the sun, moon, zodiacal constellations, and sometimes major planets. DefinitionThe term is loosely used to… …   Wikipedia

  • astronomical clock — astronominis laikrodis statusas T sritis Standartizacija ir metrologija apibrėžtis Laikrodis, kuriame laikas nusakomas dangaus kūnų judėjimo periodiškumu. atitikmenys: angl. astronomical clock; observatory clock vok. astronomische Uhr, f rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • astronomical clock — astronominis laikrodis statusas T sritis fizika atitikmenys: angl. astronomical clock; observatory clock vok. astronomische Uhr, f rus. астрономические часы pranc. horloge astronomique, f …   Fizikos terminų žodynas

  • astronomical clock — noun 1. : a high precision clock (as a Riefler clock or a quartz crystal clock) used in an astronomical observatory to time the movements of celestial bodies or assist in locating them or to serve as the basis of standard time 2. : a clock with… …   Useful english dictionary

  • astronomical clock — 1. a clock indicating or representing the movements of the sun or planets, the phases of the moon, or the sky visible at a given time, used as a means of establishing time or for additional information, as locating celestial bodies or timing… …   Universalium

  • astronomical clock — /ˌæstrənɒmɪkəl ˈklɒk/ (say .astruhnomikuhl klok) noun a clock which reads sidereal time …   Australian English dictionary

  • Astronomical Clock Apartment — (Прага,Чехия) Категория отеля: 3 звездочный отель Адрес: Týnská ulička …   Каталог отелей

  • Prague Astronomical Clock — The clock tower The Prague Astronomical Clock or Prague Orloj (Czech: Pražský orloj [praʃskiː orloj]) is a medieval astronomical clock located in Prague, the capital of the Czech Republic, at …   Wikipedia

  • Strasbourg astronomical clock — The Strasbourg astronomical clock is located in the Strasbourg Cathedral, in the city of Strasbourg, Alsace, which was annexed by France in the late 17th century.The current clock dates from 1843. Its main features, besides the automata, are a… …   Wikipedia

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