Horology.com:
Horology is the science of time, timekeeping and timekeepers.
Organized collection of links to horological websites globally.
http://www.horology.com/
Pocket Horology:
National chapter of the NAWCC dedicated to collaborative research on
the history and horology of pocket watches.
http://www.pocketwatch.org/
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.
http://home.clara.net/steve.thackery/clocks/horindex.htm
Antique Horology:
The Horological Foundation's directory of web sites for watches,
clocks, instruments and barometers.
http://www.antique-horology.org/
Leap Year Frequently Argued Questions:
A humorous approach towards explaining the nature of leap years, in
particular why 2000 is a leap year.
http://world.std.com/%7Edpbsmith/leapyearfaq.txt
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
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/
Leap Year Calculation for Year 2000:
A response to a VMS problem report giving a detailed explanation of
why 2000 is a leap year.
http://www.openvms.digital.com/openvms/products/year-2000/leap.html
Louis Essen:
Autobiography of the physicist who built the world's first
operational atomic clock.
http://www.btinternet.com/~time.lord/
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.
http://www.onlineclockbuilding.com
The Bones of Time:
Extensively describes the relationship between time, gravitation and
energy. Detailed experiments to demonstrate the concepts are
included.
http://www.geocities.com/thebonesoftime/
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
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/
Jens Olsen's Astronomical Clock:
Description of the restoration of Jens Olsens Astronomical Clock, a
masterpiece in Copenhagen City Hall that consists of 15.448
individual parts.
http://www.ateliera.dk/olsen.htm
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.
http://www.my-time-machines.net
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.
http://home.rochester.rr.com/kjmpage/clockshistory.html
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.
http://www.abbeyclock.com/
David Knight - Watchmaker from UK:
Articles and pictures of the first two watches made by David Knight.
Rich artistic pictures.
http://www.midknight.fsnet.co.uk/david.html
Daylight Saving Time:
History of daylight saving time and how we use it to save energy.
http://webexhibits.org/daylightsaving/
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.
http://pages.zoom.co.uk/cosmicelk/hamptoncourtclock.htm
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.
http://www.cam.net.uk/home/pb/index.html
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.
http://www.timekeepers.org/clock.htm