A clock (from the Latincloca, "bell") is an instrument for measuring time and for measuring time intervals of less than a day—as opposed to a calendar. Those used for technical purposes, of very high accuracy, are usually called chronometers. A portable clock is called a watch. The clock in its most common modern form (in use since at least the 14th century) displays the hours, minutes and, sometimes, seconds that pass during a twelve- or twenty-four-hour period.
History
The clock is one of the oldest human inventions, requiring a physical process that will proceed at a known rate and a way to gauge how long that process has run. As the seasons and the phases of the moon can be used to measure the passage of longer periods of time, shorter processes had to be used to measure off hours and minutes. The sundial, which measures the time of day by the direction of shadows cast by the sun, was widely known in ancient times.
travel tidbits - Worcester Telegram Fri, 04 Jul 2008 08:42:51 -0000 travel tidbitsWorcester Telegram, MA - 13 hours agoWELLESLEY — More than 150 antiques dealers will show their wares at the third annual Antiques at Elm Bank event on the grounds of the Massachusetts ... New England antiques show features 150 dealers - The Canadian Press Fri, 04 Jul 2008 17:25:33 -0000 New England antiques show features 150 dealersThe Canadian Press, Mass. - 4 hours agoMore than 150 antiques dealers will show their wares at the third annual Antiques at Elm Bank event on the grounds of the Massachusetts Horticultural ... Antiques, art in North Hatley - The Gazette (Montreal) Fri, 04 Jul 2008 06:36:03 -0000 Antiques, art in North HatleyThe Gazette (Montreal), Canada - 15 hours agoHere's a chance to have it appraised at the 26th annual North Hatley Antique and Folk Art Show. The show runs from tonight to Sunday in the resort town on ... A slump is a good time to invest in antiques - NEWS.com.au Thu, 03 Jul 2008 23:04:51 -0000 A slump is a good time to invest in antiquesNEWS.com.au, Australia - 22 hours agoBy John Stapleton July 04, 2008 12:00am THE antique trade is booming, although retailers are not exactly sure why. Some put it down to the rocky state of ... Still time to get items on TV's antiques roadshow - Lynn News Fri, 04 Jul 2008 07:14:17 -0000 Still time to get items on TV's antiques roadshowLynn News, UK - 14 hours agoBy Mike Last PEOPLE with items too big to carry to BBC 1's Antiques Roadshow at Oxburgh Hall on Thursday, July 17, are being reminded to contact the ... Getting the facts straight on Antiques, Treasures Trove Act - Borneo Bulletin Fri, 04 Jul 2008 13:02:04 -0000 Borneo BulletinGetting the facts straight on Antiques, Treasures Trove ActBorneo Bulletin, Brunei Darussalam - 8 hours agoAll archaeological remains or antiques discovered on land or buried under the river, lake or sea are absolute property of Museums Department and a special ... Koziseks win luck of draw with antiques - Ellsworth Reporter Fri, 04 Jul 2008 05:16:33 -0000 Koziseks win luck of draw with antiquesEllsworth Reporter, KS - 16 hours agoI probably won’t get on the show, but at least I’ll get my antiques appraised and see what they say.” Recently, after applying directly to the show, ... Diverse Sales Upriver at Stair Galleries - New York Times Fri, 04 Jul 2008 05:10:59 -0000 Diverse Sales Upriver at Stair GalleriesNew York Times, United States - 16 hours agoBy WENDY MOONAN HUDSON, NY — Strolling through this humble city on the Hudson River, about 110 miles north of Manhattan, you see how green antiques can be. ... Along the Hudson, Searching for Old - New York Times Fri, 04 Jul 2008 05:10:59 -0000 New York TimesAlong the Hudson, Searching for OldNew York Times, United States - 16 hours agoMore Photos » Some antiques hunters believe heaven is the Clignancourt flea market outside Paris. But please; the euro has gotten very bossy with the dollar ... Business Spotlight: Persian Heritage Rugs & Antiques - Gay and Lesbian Times Thu, 03 Jul 2008 19:06:14 -0000 Business Spotlight: Persian Heritage Rugs & AntiquesGay and Lesbian Times, CA - Jul 3, 2008Persian Heritage Rugs and Antiques was the brainchild of Ahmad Farid, a self-taught businessperson born in Kabul, Afghanistan. As a child he learned the art ...
DXZone: Antique Radio daily Top 10
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Antique Horology - The Horological Foundation's directory of web sites for watches, clocks, instruments and barometers.
Meta Description: [ The Horological Foundation's directory for Antique Clocks, Antique Watches and Antique Barometers ]
Atmos Clocks From Jaeger-LeCoultre - Offering information on dating, history, care and restoration.
Meta Description: [ Complete Restoration and repair of all types of Antique
Clocks including American English, French & German movements; Specializing
in Swiss, Atmospheric Atmos Clocks by Jaeger-LeCoultre. Our services also
include, gold, bronze, brass and silver restoration, including dial and ca... ]
Attleboro Clocks Co. Research - Dedicated to research on antique clocks with Attleboro Clock Co. Attleboro Mass on the dial.
Barrie's Virtual Museum of Clocks - Pictures and information about antique and vintage clocks including grandfather, mantle and wall clocks. Electric and master clocks, time recorders and anything to do with horology.
Meta Description: [ Pictures and information on over 300 antique and vintage clocks in Barrie's Clock Museum ]
ClockHistory.Com - History and information about Westclox, trade name of the Western Clock Manufacturing Company. Important dates, patents, advertisements, catalogs and online ordering of select reproduction replacement parts.
Meta Description: [ Historical information about Westclox and Western Clock Company clocks and watches, Seth Thomas weight clocks and adamantine clocks, and early Telechron and Warren Clock Company clocks and motors. Standard Electric Time Company clocks. ]
Clocks and Time - Horological directory of web sites for organizations, museums for clocks and watches, mailing lists, book reviews and a watch and clock FAQ.
Meta Description: [ Horological site for organizations, museums for clocks, watches. Software for time synchronization and display. Clocks, Clocksmiths and Sundial mailing lists. Reviews, and dealers of books, magazines. Tables of contents. Horological science. ]
Clocks: A Collection - Listing and photographs of clocks in a personal collection.
Horology - A Great Hobby - Basic introduction to how electric clocks work. Hobbyist's collection gallery with animations and related links.
Interstate Time Company - Features a slide show on Collecting Illinois Watches Without Going Broke, and discussion on private labeled Bunn Specials.
Setclocks - Contains a history of the Standard Electric Time Company, links to various collections with images and several case studies of restorations of school systems.
The Astrolabe - The history and uses of the astrolabe, a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky.
Meta Description: [ Introduction to the astrolabe. ]
The Clockwork Historian - Specializing in research on the early clockmakers of New England. Has records of tower clock installations for Seth Thomas, E. Howard, Stevens and Schwalbach clock companies.
The Fascination of Old Clocks and Watches - Information and pictures on pocket watches, mantel clocks, carriage clocks, marine chronometers, electric clocks, and wristwatches.
Meta Description: [ alte Uhren, pendules anciennes, old clocks ]
Uk250.co.uk - Antiques Websites - A collection of UK websites for antiques.
Meta Description: [ A splendid collection of UK websites for antiques ]
Vienna Regulators - Includes illustrations and information on styles from 1815-1920 and clocks for sale.
This model is inspired by John Harrison's H1 clock. The balls in the middle of the red and green rods are magnetic poles ...