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How Does Big Ben Keep Accurate Time?

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When parliament commissioned this clock in 1854, they insisted Big Ben be the biggest, most powerful clock in the world. It takes an hour and a half to wind this massive engineering marvel!
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When parliament commissioned this clock in 1854, they insisted Big Ben be the biggest, most powerful clock in the world. It takes an hour and a half to wind this massive engineering marvel!
Watch full episodes of your favorite Science shows:
Subscribe to Science Channel:
Follow Science Twitter:
Or join us on Facebook:
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