Crossword clues for pendulums
pendulums
The Collaborative International Dictionary
Pendulum \Pen"du*lum\, n.; pl. Pendulums. [NL., fr. L. pendulus hanging, swinging. See Pendulous.] A body so suspended from a fixed point as to swing freely to and fro by the alternate action of gravity and momentum. It is used to regulate the movements of clockwork and other machinery.
Note: The time of oscillation of a pendulum is independent of the arc of vibration, provided this arc be small.
Ballistic pendulum. See under Ballistic.
Compensation pendulum, a clock pendulum in which the effect of changes of temperature of the length of the rod is so counteracted, usually by the opposite expansion of differene metals, that the distance of the center of oscillation from the center of suspension remains invariable; as, the mercurial compensation pendulum, in which the expansion of the rod is compensated by the opposite expansion of mercury in a jar constituting the bob; the gridiron pendulum, in which compensation is effected by the opposite expansion of sets of rodsof different metals.
Compound pendulum, an ordinary pendulum; -- so called, as being made up of different parts, and contrasted with simple pendulum.
Conical pendulum or Revolving pendulum, a weight connected by a rod with a fixed point; and revolving in a horizontal cyrcle about the vertical from that point.
Pendulum bob, the weight at the lower end of a pendulum.
Pendulum level, a plumb level. See under Level.
Pendulum wheel, the balance of a watch.
Simple pendulum or Theoretical pendulum, an imaginary pendulum having no dimensions except length, and no weight except at the center of oscillation; in other words, a material point suspended by an ideal line.
Wiktionary
n. (plural of pendulum English)
Usage examples of "pendulums".
A `psychic', using pendulums over maps and dowsing rods in airplanes, purports to find new mineral deposits.
Behind it he placed on a shelf the apparatus composed of the pendulums and magnets.
The pendulums vibrate, and the needles trace a broken line on the paper on each drum.
With just two pendulums, that second would be available in the center or at the edge.
Whereupon the four pendulums slowed, stopped, and withdrew into the ceiling.
And there are other pendulums: there’s one in New York, in the UN building, there’s one in the science museum in San Francisco, and God knows how many others.
In the first two pieces of the message, those in the hands of the Portuguese and the English, the Templars probably referred to a pendulum, but ideas about pendulums were still hazy.
Kircher wants to study those pendulums himself, and he does, in his own way.
On a shelf, some pendulums, dusty boxes of incense sticks, little amulets, Oriental or South American, and tarot decks of diverse origin.
Of course, pendulums were an old idea—but he did something simple and beautiful that fixed them so that they would actually tell time!
Every high tree-limb in the vicinity had been exploited as a support for pendulums, and the pendulum-strings had all gotten twisted round each other by winds, and merged into a tattered philosophickal cobweb.
Upstairs, in the octagonal saltbox, were two Hooke-designed, Tompion-built clocks with thirteen-foot pendulums that ticked, or rather clunked, every two seconds, slower than the human heartbeat, a hypnotic rhythm that could be felt everywhere in the building.
To give a curious six-year-old the run of such a place, cluttered as it is with Huygens’s clocks, pendulums, lenses, prisms, and other apparatus, is a joy for the little one and a deadly trial for all adults within the sound of her voice.
As the months of my pregnancy clunked past, ponderous but inexorable, like one of Huygens’s pendulums, I had some time to consider which lie I would choose to tell when my baby was born.
Jacques, however, said something to him, and Goodbody nodded reluctantly and switched off the amplifier again -- perhaps Jacques, activated not by compassion but the thought that it might make it difficult for them if I were to die before they injected the drugs, had pointed this out -- while Jacques went around stopping the pendulums of the biggest clocks.