Ways of telling time

Timeline created by JaredM00caitlin
  • 3,000 BCE

    Obelisk

    Early Egyptians told time by looking at the shadow made by an unmoved object in the sun. An obelisk is a vertical structure with four sides.
  • -300 BCE

    Sundial

    Babylonians used what was called a sundial. This is a flat circle that has a 12-hour face on it with a a vertical object that created a shadow on the face when the sun was cast upon it.
  • 550

    Water Clocks

    The early Greeks and Egyptians, and later the Chinese, used a clepsydra, or a water clock. These were devices that allowed water to flow from one container to another through a small hole. Lines were drawn on the containers that represented what time it was based on where the water level was.
  • 1050

    Hourglass

    These were two containers on top of one another connected by a small opening where a material, such as sand or water, would drop from the top container to the bottom.
  • 1300

    Mechanical Clocks

    These devices used the physics principles of weight and balances to tell time over a 12-hour period. These devices eventually used pendulums, which improved the accuracy.
  • 1400

    Watches

    These were devices people could easily carry and they functioned through the use of a network of coiled springs.
  • Quartz Clocks

    These clocks ushered in the digital era where the use of batteries alongside a quartz crystal took the place of coils and springs. These clocks typically show the time using numbers instead of hands on a face.
  • Period:
    3,000 BCE
    to

    Ways of telling time