Horology

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» "Orologio" at the St. Mark's Square Tower, Venice - Antica Orologeria Zamberlan - Website of Antica Orologeria Zamberlan, Italy. Extensive technical and historical explanation of the restoration and controversy of the "Orologio" Tower at St. Mark's Square, Venice.
» 24 hour analog clocks - The 24 hour analog clock and watch site. All about the 24 hour analog dials. History, software, even the places to find them.
» 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.
» Clock a History - A brief history of time keeping. How mankind has used the sun, water, candles, sand, pendulums, springs, electronics, tuning forks, and quartz crystals, to tell time.
» 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.
» 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.
» Horology - A Great Hobby - A very basic introduction to how electric clocks work, with animated pictures. Also a collection of cheap electric clocks with pictures and descriptions.
» Horology.com - Horology is the science of time, timekeeping and timekeepers. Organized collection of links to horological websites globally.
» 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.
» Leap Year Frequently Argued Questions - A humorous approach towards explaining the nature of leap years, in particular why 2000 is a leap year.
» Lincolnshire Branch of the British Horological Institute - News, events, activities and general information maintained by BHI members.
» 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.
» Online Clock Building - Watch a master clockmaker building a clock movement from scratch. Hundreds of photos and drawings, plus a complete description of the process and CAD plans.
» 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.
» R.A. Braithwaite - Educational site Elliott clocks, how they are built and how to look after them.
» The Bones of Time - Extensively describes the relationship between time, gravitation and energy. Detailed experiments to demonstrate the concepts are included.
» 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.
» Towerclocks.org - Towerclocks in the World - Descriptions, photos and history of tower clocks in the world (English, Español, Português).
» UNITAS Reference Site - UNITAS wristwatch and pocketwatch movements from 1898 to the present.