Bill Nye, the Science Guy: Old School Sundials
00:07:40 - 00:08:47
  • Math → Measurement → Telling Time

Bill introduces the ancestor of the modern clock: the sundial. He illustrates how it uses shadows to indicate the time of day and explains how it influenced the clock. A time lapse then shows how the sundial and clock are in sync as the hours go by during the day.

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