Passage of Time

By michellemann012
  • 3000 BCE

    Egyptains used obelisk

    an obelisk is a vertical structure with four sides and is placed in the sun to cast shadows.
  • 325 BCE

    Greeks & Egyptians Water Clock

    also called a clepsydra
  • 300 BCE

    Babylonia Sundial

  • 520

    Ancient China burning ropes

    After candles were invented they started to make notches in candles to track the passage of time.
  • 1001

    The Hourglass

    used in Europe by the 11th century first timekeeper invented that did not rely on the sun
  • 1300

    Mechanical Clock

    used physics principals to mark increments of time over a 12-hour period.
  • 1401

    Analog Clock

    round clock face, short hour hand and long minute hand
  • 1401

    first watches

    time pieces that people could wear. measured time through a system of coiled springs.

  • European inventors create the pendulum

    the pendulum increased a clocks accuracy and preciseness

  • Quartz Crystal

    Quartz Crystal was first placed in watches instead of coils and springs usually show the time digitally.