How Does Big Ben Keep Accurate Time?
3.5 میلیون بار بازدید -
8 سال پیش
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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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http://www.sciencechannelgo.com
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:
http://www.sciencechannelgo.com
Subscribe to Science Channel:
http://bit.ly/SubscribeScience
Follow Science Twitter:
Twitter: ScienceChannel
Or join us on Facebook:
Facebook: ScienceChannel
Check out the all new seeeker.com:
http://www.seeker.com/
8 سال پیش
در تاریخ 1395/06/09 منتشر شده
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