Pendulum in a sentence

In one striking demonstration, it accurately predicted the chaotic motion of a pendulum in real-time, despite never being trained on pendulum dynamics.

The history of the 20th century shows that unlike a physical pendulum, pulled by gravity, the societal pendulum between individualism and community–between I and we–does not swing automatically.

All that was necessary was to time the period of an ordinary (single pivot) pendulum at the first point, then transport the pendulum to the other point and time its period there.

Borda & Cassini's 1792 measurement of the length of the seconds pendulum * 1737: French mathematician Pierre Bouguer made a sophisticated series of pendulum observations in the Andes mountains, Peru.

British physicist and army captain Henry Kater in 1817 realized that Huygens' principle could be used to find the length of a simple pendulum with the same period as a real pendulum.

Effectively, this causes a double pendulum motion, with the top of the pole moving forward and pivoting from the box, while the vaulter acts as a second pendulum pivoting from the right hand.

Examples Simple pendulum A simple pendulum exhibits approximately simple harmonic motion under the conditions of no damping and small amplitude.

He determined the mathematical formula that related pendulum length to time (99.38 cm or 39.13 inches for the one second movement) and had the first pendulum-driven clock made.

Huygens had discovered in 1673 that a pendulum has the same period when hung from its center of oscillation as when hung from its pivot, and the distance between the two points was equal to the length of a simple gravity pendulum of the same period.

If a simple pendulum is suspended from the cusp of an inverted cycloid, such that the "string" is constrained between the adjacent arcs of the cycloid, and the pendulum's length is equal to that of half the arc length of the cycloid (i.

If these variations in the escapement's force cause changes in the pendulum's width of swing (amplitude), this will cause corresponding slight changes in the period, since (as discussed at top) a pendulum with a finite swing is not quite isochronous.

In 1851, Léon Foucault showed the Earth's rotation with a huge pendulum ( Foucault pendulum ).

In a clock, the pendulum must receive pushes from the clock's movement to keep it swinging, to replace the energy the pendulum loses to friction.

In a mercury pendulum, the pendulum's weight (bob) is a container of mercury.

In France in 1747, geographer Charles Marie de la Condamine proposed defining length by a seconds pendulum at the equator; since at this location a pendulum's swing wouldn't be distorted by the Earth's rotation.

In one approach the user first determines which direction (left-right, up-down) will indicate "yes" and which "no" before proceeding to ask the pendulum specific questions, or else another person may pose questions to the person holding the pendulum.

Measuring gravity with an invariable pendulum, Madras, India, 1821 * Invariable pendulums: Kater introduced the idea of relative gravity measurements, to supplement the absolute measurements made by a Kater's pendulum.

Pendulum clock Pendulum clock Ansonia.

The first pendulum to correct for this error was the mercury pendulum invented by George Graham in 1721, which was used in precision regulator clocks into the 20th century.

The gravity arm then pushes on the free pendulum, which releases it to drop out of engagement at a time that is set entirely by the free pendulum.