Wooden hourglass 3

History of Time

By kdzhang
  • 4000 BCE

    Early time

    Early time
    Used light from the sun and darkness to tell the difference between night and day.
  • 3000 BCE

    Obelisk

    Obelisk
    Egyptians used shadows cast by the sun to tell time. They used 4 sided vertical structures called obelisks as shadow clocks
  • 2000 BCE

    Water clock

    Water clock
    Early Egyptians, Greeks and Chinese used water clocks to measure the amount of time that had passed.
  • 300 BCE

    Sundial

    Sundial
    Babylonia started to used sundials to tell time
  • Dec 24, 1000

    Hourglass

    Hourglass
    Europeans began using hourglasses that used sand to measure time.
  • Jul 1, 1300

    Mechanical clcoks

    Mechanical clcoks
    The first mechanical clocks were invented. They used used weights and balances to tell time.
  • Dec 24, 1400

    Watches

    Watches
    First handheld watches are created in Italy.

  • Pendulums

    Pendulums
    Pendulums are added to mechanical clocks to make them more accurate.

  • Standard Time

    Standard time is invented to divide the earth into 24 equal time zones

  • Universal Time Coodinate

    This was created to have a more accurate way to tell time