Clock`1

Clocks

By Dani501
  • 400

    Water Clock 400 B.C.

    The Greeks use a water clock, which measures the outflow of water from a vessel, in order to measure time
  • Jan 1, 1500

    Sundial 1500-1300 B.C.

    Sundial first used in Egypt to measure the time of day by the sun's shadow.The clock showed that hours are shorter in winter and longer in summer.

  • The Pendulum 1583

    Galileo Galilei realizes that the frequency of a pendulum's swing depends on its length. This was when the pendulum was improved.