Directory: Top/Reference/Time/Horology

Horology.com
Horology is the science of time, timekeeping and timekeepers. Organized collection of links to horological websites globally.
http://www.horology.com/
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Antique Horology
The Horological Foundation's directory of web sites for watches, clocks, instruments and barometers.
http://www.antique-horology.org/
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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.
http://www.howstuffworks.com/time.htm
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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.
http://americanhistory.si.edu/ontime/
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How The Days of the Week Got Their Names
A short history of the week and each day of the week.
http://www.indepthinfo.com/weekdays/index.shtml
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Louis Essen
Autobiography of the physicist who built the world's first operational atomic clock.
http://www.btinternet.com/~time.lord/
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"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.
http://www.orologeria.com/english/tower/index.htm
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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.
http://www.clockmaker.co.uk
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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.
http://www.allanstime.com/AllanVariance/
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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.
http://www.ateliera.dk/olsen.htm
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