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Updated: June 12, 2025
Three or more Pendulums. If the number of pendulums be increased to three or more, the length of all being the same, a fresh field for observation is opened. With an increase of number a decrease in the individual weighting is advisable, to prevent an undue sagging of the string.
They are beautiful and of infinite variety, and one advantage attaching to this form of harmonograph is, that the same figure can be reproduced exactly an indefinite number of times by releasing the pendulums from the same points.
He led them next to that quarter where those reside who, as they are not dangerous to themselves or others, enjoy a certain degree of freedom, according to the state of their distemper. Harley had fallen behind his companions, looking at a man who was making pendulums with bits of thread and little balls of clay.
Mrs Bantem was washing up the things afterwards, and talking about dinner; Harry Lant was picking up all the odds and ends, to carry off to the great elephant, standing just then in the best bit of shade he could find, flapping his great ears about, blinking his little pig's eyes, and turning his trunk and his tail into two pendulums, swinging them backwards and forwards as regular as clockwork, and all the time watching Harry, when Measles says all at once, "Here come some lunatics!"
The subject was not without its fascination for him, because it suggested a strange train of thought about the hood clock which was the text, as it were, of the lawyer's discourse. He looked up. Mr. Brimsdown, in front of the clock, was discoursing about dials and pendulums. Barrant broke in abruptly with the question on his mind
For he knew his sister to be stubborn as old Clay himself, and he feared lest they drive her to the arms of Bad Dave Roush. "I reckon you was talkin' to yo'self, mebbe," he suggested. "I reckon." They walked home together along a path through the rhododendrons. The long, slender legs of the girl moved rhythmically and her arms swung like pendulums.
A. Yes; the time of vibration bears the same relation to the time in which a body would fall through a space equal to half the length of the pendulum, that the circumference of a circle bears to its diameter. The number of vibrations made in a given time by pendulums of different lengths, is inversely as the square roots of their lengths.
Two pendulums are so suspended on points that their respective directions of movement are at right angles to one another that is, pendulum A can swing only north and south, as it were, and pendulum B only east and west. On the top of B is a platform to carry a card, and on the upper end of A a lever is pivoted so as to be able to swing only vertically upwards and downwards.
At length brass pendulums which, they discovered, made the most trouble, were replaced by those of iron or lead which, being of softer material, expanded and contracted more readily. In our day you will sometimes see a very finely adjusted astronomical clock whose pendulum terminates in a hollow glass or iron receptacle filled with mercury, instead of the usual metal bob."
Here's to old Cax., for his nose is made of wax! Here's to old Prex for he likes his double x!" until some of us were thrust by the police into the nauseating dens of the stationhouse. Thus, like pendulums, we swung twixt studies and pranks till the boom of the rebel cannon bombarding Fort Sumpter thundered upon our ears.
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