What is time? Did it have a beginning? Will it ever end? Is it something that humans have created, or does it exist independently of the universe? This intriguing program explores the meaning of time through the eyes of poets, philosophers, and scientists throughout the ages. In addition, it traces the development of time-measuring and time-keeping instruments, from sundials and calendars, to time zones and atomic clocks. A Cambridge Educational Production. (37 minutes)

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