Clooks pass the time

By irene corral
  • Hourglasses (Sand clocks)
    800

    Hourglasses (Sand clocks)

    Time was measured by sand falling from one part to another.
  • Water clocks (Clepsydras
    1400

    Water clocks (Clepsydras

    were water clocks that measured time by the steady flow of water from one container to another.
  • Portable clock by Peter Henlein
    1509

    Portable clock by Peter Henlein

    The first small clock that people could carry — early pocket watch.
  • Pendulum clock (by Christiaan Huygens)

    Pendulum clock (by Christiaan Huygens)

    Much more accurate — only a few seconds wrong per day.
  • Marine clocks (by John Harrison)

    Marine clocks (by John Harrison)

    Helped sailors tell time while traveling at sea.
  • Pocket and wristwatches

    Pocket and wristwatches

    Became popular during the Industrial Revolution.
  • First modern wristwatch

    First modern wristwatch

    Made by Louis Cartier for pilot Alberto Santos-Dumont.
  • First quartz watch (Seiko Astron)

    First quartz watch (Seiko Astron)

    Used electricity instead of gears — very accurate and affordable.
  • Digital watches

    Digital watches

    Used LED or LCD screens to show time — very common and cheap.
  • Smartwatches

    Smartwatches

    Can show time, track health, send messages, and more.
  • Hybrid and advanced watches

    Hybrid and advanced watches

    Mix of classic style and new tech — solar power, atomic precision, and apps.