Denison’s principal contribution was a novel gravity escapement that imparted unprecedented accuracy to the clock.
The clock was designed by Edmund Beckett Denison (later Sir Edmund Beckett and Lord Grimthorpe) in association with Sir George Airy (then astronomer royal) and the clockmaker Edward Dent. Originally in coordination with the Royal Greenwich Observatory, the chimes of Big Ben have been broadcast-with a few interruptions-since 1924 as a daily time signal by the British Broadcasting Corporation (BBC).īig Ben (right) and the Houses of Parliament, London. The hands of the clock are 9 and 14 feet (2.7 and 4.3 metres) long, respectively, and the clock tower rises about 320 feet (97.5 metres). Stephen’s Tower until 2012, when it was renamed Elizabeth Tower on the occasion of Elizabeth II’s Diamond Jubilee, celebrating 60 years on the British throne. The tower itself was formally known as St. Strictly speaking, the name refers to only the great hour bell, which weighs 15.1 tons (13.7 metric tons), but it is commonly associated with the whole clock tower at the northern end of the Houses of Parliament, in the London borough of Westminster. © UK Parliament Education Service ( A Britannica Publishing Partner) See all videos for this articleīig Ben, tower clock, famous for its accuracy and for its massive bell.
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