12/31/2023 0 Comments Visiting big ben clock towerWhen we have to count with our eyes, as we do with the clock, it is hard to pick out one in 60, but it is easy to pick out one in 5, and we have now 12 simple divisions, each with 5 spaces. So the wise clockmakers mark off 60 narrow spaces into 12 divisions, each division having 5 narrow spaces. It would never do to have to spend so long in finding out the time. Put 60 matches in a row on the table, touch one near the middle, and ask somebody to tell you the number of the match you touch, and you will see that a great deal of slow counting is necessary to get the proper number. So that this hand takes exactly one hour, or 60 minutes, to pass all the narrow spaces round the clock.īut it would never do to have 60 small spaces and to leave us to guess the exact space which the long hand touched. The large hand marks the minutes, and takes exactly one minute to cross one of these narrow spaces. The clock begins with the minutes, and the face of the clock is marked off with tiny lines into 60 narrow spaces. It takes the long hand 5 minutes to cross one wide space, and the short hand one hour to cross the same space.Ī minute is 60 seconds, and an hour is 60 minutes. THE face of a clock is divided into 12 clear wide spaces and 60 narrow ones, and each wide space stands for two things. Here is a full and simple explanation of the face of a clock. When the long hand is a quarter of the way round, it is a quarter-past the hour to which the short hand points when the long hand is half-way round, it is half-past the hour. The minute hand goes round the clock one in an hour the short hand goes from one large figure to the next in an hour. There are five of these marks between each of the large figures, so tha t when the long hand is at 2 it is 10 minutes - twice 5 minutes - past the hour. When the short hand points exactly to one of the large figures, the long hand is always at the top, and it is exactly the hour.īut if the short hand is a little past one of the large figures it is some minutes past the hour, and we know exactly how many minutes it is by counting the tiny marks on the outer ring. When the short hand points to 1 and the long hand is exactly at the top of the clock-face over 12, it is 1 o'clock. One of the hands is longer than the other the long hand marks the minutes and the short hand marks the hours. Outside these large figures is a ring of tiny marks these mark the minutes. HE clock-face has a ring of large figures from 1 to 12 these mark the hours. It takes two men about five hours to wind up Big Ben for striking. There is a great noise in the room when the bell is about to strike, and the machine shown in the bottom picture has to be wound up three times a week to give Big Ben the power to strike the hours. It weighs 13 1/2 tons, and the hammer with which the hours are struck weighs about 450 lb. The great bell, from which the clock takes its name, hangs by 1,600 feet of chain from an oak beam bound in iron plates. Kieninger Triple Calendar Moonphase Clocksīig Ben needs a workshop all his own.Kieninger Tubular Chime Grandfather Clocks.Hermle Astrolabium and Tellurium Clocks.
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