Friday video: The Clock That Changed the World

Loretta reports:

Years ago, after reading Dava Sobel’s Longitude, my husband and I were very excited to see the actual Harrison chronometers at the Royal Observatory at Greenwich.

This BBC program does a good job of explaining, in half an hour, Harrison’s achievement. It also might make some elements of Patrick O’Brian’s Jack Aubrey series a bit more comprehensible.

You can see one of the clocks we saw at Greenwich here.

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