Activity 22 English

By Ane Arrate
  • 3500 BCE

    Obelisk

  • 2000 BCE

    Water clock

  • 1498 BCE

    Sundial

  • 600

    Pendulum clock

  • 800

    Candle clock

  • 1000

    Mechanical clock

  • 1200

    Sandglass

  • 1400

    Harrison timepiece

  • Digital clock

  • Atomic clock

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