Core algorithm of international time scale has multiple metrology applications, from atomic clock frequency characterization to definition of the meter. Equation, explanation and publications.
Description of the restoration of Jens Olsen's Astronomical Clock, a masterpiece in Copenhagen City Hall that consists of 15.448 individual parts.
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.
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.
Traditional horology website with information and mantainance tips. Technical descriptions and troubleshooting of escapements. Grandfather clocks, wall clocks, and watches.
Articles and pictures of the first two watches made by David Knight. Rich artistic pictures.
History of daylight saving time and how we use it to save energy.
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.
News, events, activities and general information maintained by BHI members.
Horological index for organizations, clock and watch museums, related software, mailing lists and links. Maintained by Gordon T. Uber.
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