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3498 BCE
The Obelisk
The Obelisk was the first known clock invented. This clock was invented by the Egyptians.The Obelisk was large obelisk that cast a shadow from the sun. -
1992 BCE
The Water Clock
This clock was basically a bowl with a hole in the bottom. -
1496 BCE
Sundial
This was invented bi the Egyptians and Babylonians. This clock worked by the sun and the shadow. -
520 BCE
Candle Clock
The Candle clock was invented bi Alfred the Great. This was known in a old Chinese poem. This worked by a candle. -
1088
The Mechanical Clock
The mechanical clock was invented by Su Sang. This clock couldn't measure minutes because it only had an hour hand. -
1300
Sandglass
The Sandglass was invented in Europe. They are still in use today to measure small amounts of time. -
Pendulim Clock
The Pendulum clock was invented by Christiaan Huygens in Germany. This technology reduced the loss of time by clocks from about 15 minutes to about 15 seconds per day. -
Harrison Timepiece
The Harrison timepiece was invented by John Harrison. This was a precision longcase clock. -
The Atomic Clock
The Atomic clock was invented by Louis Essen in the U.K. Essen developed a clock that used a design invented in 1949 by Harvard physicist Norman Ramsey, who won a Nobel Prize for it 40 years later. -
Digital Clock
The Digital clock was invented by Thomas Bromley in Hull. This clock was an electric clock and the hours of this clock are from 0h to 24h.