In swing dances, tension and compression may be maintained for a significant period of time.

The swing and row simply consists of the vaulter swinging his trail leg forward and rowing the pole, bringing his top arm down to the hips, while trying to keep the trail leg straight to store more potential energy into the pole, the rowing motion also keeps the pole bent for a longer period of time for the vaulter to get into optimum position.

Galileo discovered the key property that makes pendulums useful timekeepers: isochronism, which means that the period of swing of a pendulum is approximately the same for different sized swings.

In 1644, Marin Mersenne calculated that a pendulum with a length of 39. 1 inches ( 0. 994 m ) would have a period at one standard gravity of precisely two seconds, one second for a swing forward and one second for the return swing, enabling such a pendulum to tick in precise seconds.

This shows that the period of oscillation is independent of the amplitude and mass of the pendulum but not the acceleration due to gravity ( g ), therefore a pendulum of the same length on the Moon would swing more slowly due to the Moon's lower gravitational acceleration.

Historically, there has been a swing from the sexually liberal end of the Industrial Revolution to the chaste values of the early Victorian period.

For example, as noted by Galileo in the late 16th century, the oscillation period of a pendulum is constant, regardless of the angle of the swing.

It had been observed by Marin Mersenne and others that pendulums are not quite isochronous, that is, their period depends on their width of swing, wide swings taking longer than narrow swings.

Huygens was the first to derive the formula for the period of an ideal mathematical pendulum ( with massless rod or cord and length much longer than it's swing ), in modern notation:

The time for one complete cycle, a left swing and a right swing, is called the period.

For small swings the period of swing is approximately the same for different size swings: that is, the period is independent of amplitude.

Galileo discovered the crucial property that makes pendulums useful as timekeepers, called isochronism ; the period of the pendulum is approximately independent of the amplitude or width of the swing.

With the ' New Testament ' Basie band in full swing, and arrangements written by a young Quincy Jones, this album proved a respite from the ' Songbook ' recordings and constant touring that Fitzgerald was engaged in during this period.

Typical big band arrangements of the swing period are written in strophic form with the same phrase and chord structure repeated several times.

With the ' New Testament ' Basie band in full swing, and arrangements written by a youthful Quincy Jones, this album proved a swinging respite from her Songbook recordings and constant touring she did during this period.

The pendulum's Frequency | period was timed by comparing its swing with the pendulum in the precision clock behind it.

A pendulum can be used to measure the acceleration of gravity g because its period of swing T depends only on g and its length L:

Pendulums were so universally used to measure gravity that, in Kater's time, the local strength of gravity was usually expressed not by the value of the acceleration g which is now used, but by the length at that location of the seconds pendulum, a pendulum with a period of two seconds, so each swing takes one second.

That is, if any pendulum is suspended upside down from its center of oscillation, it has the same period of swing, and the new center of oscillation is the old pivot point.

* the finite width of the pendulum's swing, which increased the period

During this period many jazz, blues, and western musicians incorporated, or emphasized, the “ swing ” in their music.

The practical definition may lead to confusion with the definition of a coulomb ( i. e., 1 amp-second ), but in practical terms this means that measures of a constant current ( e. g., the nominal flow of charge per second through a simple circuit ) will be defined in amperes ( e. g., " a 20 mA circuit ") and the flow of charge through a circuit over a period of time will be defined in coulombs ( e. g., " a variable-current circuit that flows a total of 10 coulombs over 5 seconds ").

His remaining secular works in this late period fall into three categories: first, large scale cantatas and one oratorio Habsburg written on patriotic themes or in response to the international political situation, pedagogical works written to aid his students in voice, and finally simple songs, rounds or canons written for home entertainment ; many with original poetry by the composer.

All bilaterians are thought to have descended from a common ancestor that appeared early in the Cambrian period, 550 – 600 million years ago, and it has been hypothesized that this common ancestor had the shape of a simple tubeworm with a segmented body.

One hundred and fifty more occur with the prefix ge-( reckoning a few found only in the past-participle ), but of these one hundred occur also as simple verbs, and the prefix is employed to render a shade of meaning which was perfectly known and thoroughly familiar except in the latest Anglo-Saxon period.

It was during this period that a number of simple computer games were written in BASIC, most notably Mike Mayfield's Star Trek.

However other sources of the period, such as the writings of the French dancing-masters Feuillet and Lorin, indicate that steps more complicated than simple walking were used at least some of the time.

Often his research was simple: he would review period newspapers of the dates of reported incidents and find reports on possibly relevant events like unusual weather, that were never mentioned in the disappearance stories.

simple: Classical music period

During the Cenozoic, mammals proliferated from a few small, simple, generalized forms into a diverse collection of terrestrial, marine, and flying animals, giving this period its other name, the Age of Mammals, despite the fact that birds still outnumbered mammals two to one.

The large-scale structure of the corona changes over the 11-year solar cycle and becomes particularly simple during the minimum period, when the magnetic field of the Sun is almost similar to a dipolar configuration ( plus a quadrupolar component ).

In the Renaissance period the Italian doors are quite simple, their architects trusting more to the doorways for effect ; but in France and Germany the contrary is the case, the doors being elaborately carved, especially in the Louis XIV and Louis XV periods, and sometimes with architectural features such as columns and entablatures with pediment and niches, the doorway being in plain masonry.

In addition to its amplitude, the motion of a simple harmonic oscillator is characterized by its period T, the time for a single oscillation or its frequency f =, the number of cycles per unit time.

The predominant labyrinth form during this period is the simple seven-circuit style known as the classical labyrinth.

There still remains to be mentioned Mommsen's peculiar view that Marcellus was not really a bishop, but a simple Roman presbyter to whom was committed the ecclesiastical administration during the latter part of the period of vacancy of the papal chair.

" In the post-Classical period, these rules fell into desuetude, and in popular verse simple assonance often suffices, as can be seen in an example of Irish Gaelic rhyme from the traditional song Bríd Óg Ní Mháille:

These equations demonstrate that the simple harmonic motion is isochronous ( the period and frequency are independent of the amplitude and the initial phase of the motion ).

The cemetery also offers a view of the changing style of death monuments in Ireland over the last 200 years: from the austere, simple, high stone erections of the period up until the 1860s, to the elaborate Celtic crosses of the nationalistic revival from the 1860s to 1960s, to the plain Italian marble of the late twentieth century.

If the amplitude is limited to small swings, the period T of a simple pendulum, the time taken for a complete cycle, is:

The true period of an ideal simple gravity pendulum can be written in several different forms ( see Pendulum ( mathematics ) ), one example being the infinite series:

The length L of the ideal simple pendulum above, used for calculating the period, is the distance from the pivot point to the center of mass of the bob.

This shows that a rigid rod pendulum has the same period as a simple pendulum of 2 / 3 its length.

The simple pylon-tombs which belong to the pre-Hellenic age serve as evidence for the earliest period.

Carl Sagan in his book Comet ( 1985 ) reproduces Han period Chinese manuscript ( the Book of Silk, 2nd century BC ) that shows comet tail varieties: most are variations on simple comet tails, but the last shows the comet nucleus with four bent arms extending from it, recalling a swastika.

We wish to determine the period T of small oscillations in a simple pendulum.