Clocks

The Evolution of the Clocks - Felicia

By mrsimpson
  • Apr 7, 1504

    Wrist Watch

    Wrist Watch
    In 1504, the first wrist watch was made. It was made by Peter Helein. The sizes of the other gears in this train make one hand go around the dial once every 12 hours, one every hour and one each minute.
  • Apr 7, 1577

    The first minute hand

    The first minute hand
    In 1577, Jost Burji invented the minutes hand.
    The minute hand ticks every second. The minute hand does one lap of the clockface every 1 hour, or 60 minutes.

  • Pendulum

    Pendulum
    In 1656, the pendulum was invented by Christian Huygens. The Pendulum ticks every second and that makes the clock go around one lap every 60 seconds.

  • Alarm Clock

    Alarm Clock
    An early protype of the alarm clock was invented by Greeks, in 1787. The alarm clock is use to wake people up when they need to go to work.

  • Standard Time

    Standard Time
    Sir Sanford Fleming invented standard time in 1878. You can put the Standard Time on the wall. The Standard Time ticks every second and that makes the clock go around one lap every 60 seconds.

  • What did the use before clocks to tell the time.

    What did the use before clocks to tell the time.
    They stuck a stick in the ground and measured the angle and length of the shadow. Other than sundials , which date from 1500 BCE in Egypt, and similar stick devices to read the angle of shadow, people used to tell time from observing the position and shape of the moon which as we know has 30 day cycles. Ancient peoples used times such as dusk and dawn. Another more recent time telling instrument is the clepsydra, which is a water clock that told time by dripping water onto a marked

  • Self - Wind Watch

    Self - Wind Watch
    In 1923, Swiss John Harwood invented the Self - Wind Watch.
    The hands in the watch are attached to a gear train mechanism that gears it self down. The Self - Wind Watch ticks every second.

  • Quartz

    Quartz
    In 1927, Warren Marrison invented the Quartz. It was first made in Canada were Warren is from. The Quartz is ticking every second.
  • Period: to

    The Evolution of the Clocks

  • How do the clocks work.

    How do the clocks work.
    There were many ways to tell the time, A sundial is probably the best known and most widely used. Also used were candle clocks and the sand hourglass. A precursor to the mechanical spring clock was the water clock, taking advantage of the relatively constan