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Sep 28, 1355
Mechanical clock with hour hand
Mechanical clocks were used during this time but only the hour hand was invented back then. -From en.wikipedia.org/wiki/clock-face -
Oct 2, 1400
Clock Tower
Clock tower is used to tell time for a society. -From Verdin.com -
Aug 20, 1504
First portable clock
Peter Henlein creates the first portable clock which wasn't very accurate but was portable by attaching a piece of string on your wrist. -From Focus.ti.com -
Sep 25, 1577
The minute hand
After 700 years after the use of sundial, and water clocks, the minute hand was created which is still used today. The minute hand was invented by Jost Burgi to an astronomer who needed an accurate clock for his stargazing. -From Inventors.about.com/od/cstartinventions/a/clock -
Pendulum
Christian Huygens invents the first Pendulum in 1656. The pendulum is very accurate and is only off by 1 minute a day. -From www.theclockdepot.com/clocks-blog/history-of-the-pendulum-clock -
Mechanical Clock
An early prototype of the alarm clock was invented by the Greeks around 250 BC. The Greeks built a water clock where the rising waters would both keep time and eventually flow through vessel to measure the amount.
The first mechanical alarm clock was invented by Levi Hutchins of Concord, New Hampshire, in 1787. -From http://www.fi.edu/time/Journey/Time/Escapements/clkhis.html -From uh.edu -
Electrical clock
The first batter used an electrical impulse to operate the dials of a centrally located master clock -From http://www.timekeepingsite.org/clock.htm -
Fork-clock
First fork clock by N.Niaudet which was shown at academics of sciences expositions. -From en.wikipedia.com -
Wrist watch
Patek Phillipe created the first wristwatch in 1868 but was one of the smallest wristwatches ever made. -From http://www.qualitytyme.net/pages/rolex_articles/history_of_wristwatch.html -
Time zones
Charles Dowd invents the idea of time zones by dividing the United States by meridians into zones one hour. -From Enchantedlearning.com -
Standard Time
Sir Sanford Fleming invents standard time that worked in U.S and Canada in 1878. He invented this when he missed his train to Ireland and then made a 24 hour international clock based on the GMT. -From http://adsabs.harvard.edu/full/1942PA.....50..204M -
Clock companies
In 1908, the Westclox Clock Company is issued a patent for the Big Ben alarm clock. The outstanding feature on this clock is the bell-back, which completely envelops the inner case back and is an integral part of the case. The bell-back provides a loud alarm.
The Warren Clock Company was formed in 1912 by Mr. Henry Warren as President. The company started by producing a new type of clock run by batteries, prior to that, clocks were either wound or run by weights.
-From antiqueansoniaclocks.com -
Stopwatch
The invention of time leads to many other great inventions like the stopwatch. -From blog.onlineclock.net -
Self-Winding Clock
Swiss John Harwood invents the self-winding clock. -From about.inventors.com -
Quartz clock
Quartz crystals were first used as a time standard by Warren Marrison, who invented the first quartz clock in 1927. -From inventor.smithsonian.org -
Radio Clock
Harry Caldwell invents the first radio clock. -Fromhttp://blog.onlineclock.net/clock-radio-history/ -
Casio (company)
Casio was established in 1946. -From Casio.com -
Atomic clock
The national Bureau of standards built the first atomic clock using ammonia. -From science.howstuffworks.com -
Electric Watch
In 1957, The Hamilton Watch Co of Lancaster, Pennsylvania, produced the world's first electric watch. The Hamilton Electric Watch kept time with a traditional balance-wheel mechanism which had been used in timepieces for hundreds of years and was therefore no more accurate than any other watch. However, instead of the mainspring powering the mechanism, a battery was used to power the mechanism so the need to wind was eliminated. -From www.google.com/#hl=en&output=search&sclient=psy-ab&q=elect -
G-Shock
With the launch of its first watch in 1974, Casio entered the wristwatch market at a time when the watch industry had just discovered digital technology. As a company with cutting-edge electronic technology developed for pocket calculators, Casio entered this field confident that it could develop timepieces that would lead the market. -From ttp://www.gshock.com/toughness/B0CFB079-77C5-4D63-9969-70B3102998FA -
Modern Watches
Many new G-shocks are released with many advanced feature. -From http://www.gshock.com/watches/ -
Greenwich, England
Greenwich, England is officially named the world's prime meridian by a vote at an international conference at Washington, D.C. -From wwp.greenwichmeantime.com -
Modern Clocks
Modern clocks now have a variety of features such as calculator, alarm clock, stop watch, and many other features . -From http://www.houzz.com/photos/modern/clocks
