В презентации собран материал об истории Главных часов Великобритании
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Big Ben Chernyavskiy SergayСлайд 2
Big Ben History Malfunctions , breakdowns, and other outages Photos
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Big Ben is the nickname for the great bell of the clock at the north end of the Palace of Westminster in London , and often extended to refer to the clock and the clock tower, officially named Elizabeth Tower , as well . Elizabeth Tower holds the largest four-faced chiming clock in the world and is the third-tallest free-standing clock tower . It celebrated its 150th anniversary on 31 May 2009,during which celebratory events took place . The tower was completed in 1858 and has become one of the most prominent symbols of both London and England, often in the establishing shot of films set in the city. Big Ben
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There were two bells cast as the clock tower's hour bell. A first, 16 ton weighing bell was cast by John Warner and Sons in 1856. Since the Clock Tower was not yet completed, the bell was hung temporarily in the Palace Yard. The bell soon cracked so it was recast in 1858 in the Whitechapel Bell Foundry as a 13.5 ton bell. Unfortunately soon after this bell was placed in the belfry in July 1859, it cracked as well. This time, instead of yet again recasting the bell, the crack was repaired and a lighter hammer was used to prevent any more cracks. The hour bell was probably named after Benjamin Hall, Clock face the First Commissioner of Works. Some sources however claim the bell was named after Benjamin Caunt , a British heavyweight boxer Big Ben
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1916: for two years during World War I, the bells were silenced and the clock face darkened at night to prevent attack by German Zeppelins. 1 September 1939: although the bells continued to ring, the clock faces were darkened at night through World War II to prevent guiding Blitz pilots . New Year's Eve 1962: The clock slowed due to heavy snow and ice on the long hands, causing the pendulum to detach from the clockwork, as it is designed to do in such circumstances, to avoid serious damage elsewhere in the mechanism – the pendulum continuing to swing freely. Thus it chimed in the new year 10 minutes late . 5 August 1976: First and only major breakdown. The air brake speed regulator of the chiming mechanism broke after more than 100 years of torsional fatigue, causing the fully wound 4-ton weight to spin the winding drum out of the movement, causing a large amount of damage. The Great Clock was shut down for a total of 26 days over nine months – it was reactivated on 9 May 1977; this was its longest break in operation since it was built. During this time BBC Radio 4 had to make do with the pips. Although there were minor stoppages from 1977 to 2002 when the maintenance of the clock was carried out by the old firm of clockmakers Thwaites & Reed, these were often repaired within the permitted two hour downtime and not recorded as stoppages. Prior to 1970 the maintenance was carried out by the original firm of Dents and since 2002 by Parliamentary staff. 27 May 2005: the clock stopped at 10:07 pm local time, possibly due to hot weather; temperatures in London had reached an unseasonable 31.8 °C (90 °F). It restarted, but stopped again at 10:20 pm local time and remained still for about 90 minutes before restarting.29 October 2005: the mechanism was stopped for about 33 hours so the clock and its chimes could be worked on. It was the lengthiest maintenance shutdown in 22 years . 7:00 am 5 June 2006: The clock tower's "Quarter Bells" were taken out of commission for four weeks as a bearing holding one of the quarter bells was damaged from years of wear and needed to be removed for repairs. During this period, BBC Radio 4 broadcast recordings of British bird song followed by the pips in place of the usual chimes . 11 August 2007: Start of 6-week stoppage for maintenance. Bearings in the clock's going train and the "great bell" striker were replaced, for the first time since installation. During the maintenance works, the clock was not driven by the original mechanism, but by an electric motor. Once again, BBC Radio 4 had to make do with the pips during this time. Malfunctions, breakdowns, and other outages
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BIG BEN PHOTOS
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Белый лист
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