The history of keeping time - Karen Mensing

TEDEd
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TEDEd
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The history of keeping time - Karen Mensing

TED-Ed Lesson: Where did time-telling come from? What are time zones and why are there so many of them? Get the answers to these questions and more in this journey through the history of time -- from sundials to hourglasses to modern clocks.
Publisher
TED Ed

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