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Hace 17 horas · Part of a series on Human history ↑ Prehistory (Stone Age) (Pleistocene epoch) Holocene Timelines Neolithic – Contemporary (10,000 BCE – Present) Age of the human race Recorded history (Common Era) Earliest records Protohistory Proto-writing Ancient Copper Age Bronze Age Iron Age Axial Age Classical antiquity Late antiquity Africa North America South America Oceania East Asia South Asia ...
Hace 17 horas · Casio F-91W digital watch, one of the most popular watches ever. A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, and the year. Devices operating on several physical ...
