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• Reference: Time: Alternative Systems  (5)

» Abbey Clock Clinic - Mark Headrick's Horology Page - Traditional horology website with information and mantainance tips. Technical descriptions and troubleshooting of escapements. Grandfather clocks, wall clocks, and watches.




» Allan Variance -- Overview by David W. Allan - Core algorithm of international time scale has multiple metrology applications, from atomic clock frequency characterization to definition of the meter. Equation, explanation and publications.




» Antique Horology - The Horological Foundation's directory of web sites for watches, clocks, instruments and barometers.




» Clocks and Time - Horological index for organizations, clock and watch museums, related software, mailing lists and links. Maintained by Gordon T. Uber.




» Cumbria Clock Company - Company specialized in all aspects of work connected with church clocks, public clocks, and tower clocks which includes the full historical restoration of antique clock movements.




» David Knight - Watchmaker from UK - Articles and pictures of the first two watches made by David Knight. Rich artistic pictures.




» Daylight Saving Time - History of daylight saving time and how we use it to save energy.




» Functionning of a Simple Mechanical Watch - Explanation of the roles of components of a wristwatch.




» Hampton Court Clock - The story of the famous Astronomical clock at Hampton Court Palace. By the author of the original official guide books with the extra omitted information.




» The History of Clocks and Watches - Learn about the history of clocks and watches, and discover the evolution of timekeeping devices from the first primitive sundials to the ultramodern atomic clocks. Includes a timeline.




» The Horology Source - Gateway to all aspects of clocks, watches, timekeeping, and the science of horology.




» Horology.com - Horology is the science of time, timekeeping and timekeepers. Organized collection of links to horological websites globally.




» 24 hour analog clocks - The 24 hour analog clock and watch site. History, software, and the places to find clocks with 24 h dials.




» How Stuff Works: Time - Complete five-part explanation of time and how it is measured, including information about clocks, time zones, calendars, BC and AD.




» How The Days of the Week Got Their Names - A short history of the week and each day of the week.




» Jens Olsen's Astronomical Clock - Description of the restoration of Jens Olsen's Astronomical Clock, a masterpiece in Copenhagen City Hall that consists of 15.448 individual parts.




» Layman's Guide to the Gent's Electric Turret Clock - A Layman's Guide to the working and restoration of a Gent's Pulsynetic Waiting Train Electric Pendulum Turret Clock.




» Leap Year Calculation for Year 2000 - A response to a VMS problem report giving a detailed explanation of why 2000 is a leap year.




» Louis Essen - Autobiography of the physicist who built the world's first operational atomic clock.




» Mark Frank's Home Page - Website showing the restoration of a french flat bed tower clock in great detail, step by step, as well as other information and links of tower clock sites.




» On Time - The Smithsonian Institute's exhibition on the changing ways we have measured, used, and thought about time over the past three hundred years.




» "Orologio" at the St. Mark's Square Tower, Venice - Antica Orologeria Zamberlan - Website of Antica Orologeria Zamberlan, Italy. Includes technical and historical explanation of the restoration and controversy of the "Orologio" Tower at St. Mark's Square, Venice.




» Pocket Horology - National chapter of the NAWCC dedicated to collaborative research on the history and horology of pocket watches.




» Pulsynetic Electric Clocks - Description, pictures and diagrams of many of the horological products made before 1945 By Gent's of Leicester GB, including a rare Observatory controlled transmitter.




» UNITAS Reference Site - UNITAS wristwatch and pocketwatch movements from 1898 to the present.

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