$35

Longitude: John Harrison & His Clocks

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Cincinnati Observatory Center

3489 Observatory Avenue

Cincinnati, OH 45208

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Knowing what time, it is, exactly, has been part and parcel to knowing where you are on the planet, especially at sea. Comparing sky-time with your clock-time told you where you were, your longitude. This was a nearly impossible task with the mechanisms of early time keeping up to the 18th century, which resulted in seafaring catastrophe after catastrophe; lost at sea or found on the reef. All of that changed in the 1700’s because of the life-long work of a third-grade educated, back-woods carpenter, who took on the scientific establishment of his day and brought us into the world of modern accurate time-keeping.

John Harrison’s clocks and advances in clock making told us what time it is, exactly, and set records in accuracy that stood for centuries, even into the 21st century. Let’s find out what makes clocks tick (literally).

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Dave Bosse is an Instructor of Astronomy at the University of Cincinnati and has been teaching at U.C for over 35 years.

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Cincinnati Observatory Center

3489 Observatory Avenue

Cincinnati, OH 45208

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Refunds up to 1 day before event

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