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Keeping Time

Year

2012

Language

ENGLISH

Duration

30m

Rating

TVPG

Author

null

Publication Information

The Great Courses

Summary

How do we measure the passage of time? Discover that practical concerns have driven the search for more and more accurate clocks. In the 18th century, the problem of determining longitude was solved with a timepiece of unprecedented accuracy. Today's GPS navigation units rely on clocks accurate to a billionth of a second.

Subjects