In the 17th century Galileo had discovered the isochronism of the pendulum, but he made no practical use of it, except by the invention of a little instrument for enabling doctors to count their patients' pulse-beats.
In theory this of course would not destroy the isochronism of the pendulum, for it would only be to apply upon the pendulum a force at right angles to the rod, and varying as the displacement.
Effects produced when the isochronismof the shocks is not perfect.
We obtain the notes of both circles, one of which is the octave of the other, if there is no isochronism between the shocks.
If theisochronism is but little impaired, we obtain a note corresponding to the mean interval of the shocks.
Clocks provided with this escapement keep reasonably good time; the resistance of the recoils compensate in a measure for the want of isochronism in the oscillations of the pendulum.
And it was not until the close of the year 1750 that Pierre Le Roy and Ferdinand Berthoud studied the conditions of isochronism pertaining to the spiral.
The discovery by Galileo of theisochronism of the pendulum, followed by Huyghens's adaptation of that principle to clocks, has been one of the greatest aids to accurate observation.
Both Hooke and Huyghens could see that the application of isochronism would be quite as valuable in a watch as in a clock, but they realized that this could not be accomplished by means of the pendulum.
The isochronism of a swinging body was known in Babylon thousands of years before, although the Babylonians, of course, could not explain it.
For perfect isochronism it should be a cycloidal segment.
The isochronism of a pendulum vibrating in a cycloidal arc was first discovered by Galileo but he did not apply it to clocks.
A famous Italian scientist born in 1564 who discovered, among many other things, the isochronism of the pendulum vibrating through long or short arcs.
He claimed to have discovered the isochronism of the balance spring and its application to watches, though this was also claimed by Huyghens.
Like all other springs in which the outer coil returns towards the center, it offers opportunities of obtaining isochronismby varying the character of the curves described by the outer coil and thus altering its resistance.
In fact, Julien Le Roy rediscovered the principle of isochronism and announced it with a good deal of pride, quite ignorant of the fact that Hooke and Huyghens explained it nearly a century before.
The principle of theisochronism of a balance spring was discovered by Hooke, and first applied to a watch by Tompion.
It is necessary that the two machines besides revolving in perfect isochronism should synchronise as well, i.
It is evident, therefore, that some arrangement must be employed whereby synchronism, as well as isochronism of the two instruments can be maintained.
Lahire asserts[159] that the isochronism of springs was communicated to Huyghens at Paris by Hautefeuille, and that this was the reason why Huyghens failed to obtain the patent he solicited for the construction of spring watches.
In 1602 we find Galileo apologizing in a letter addressed to his early patron the Marchese Guido Ubaldi, for pressing again upon his attention the isochronism of the pendulum, which Ubaldi had rejected as false and impossible.
An inspection of them will show how little remained to be done when the isochronism of the pendulum was discovered.
It will be observed that these balances wanted the spiral spring introduced in all modern watches, which has a property of isochronism similar to that of the pendulum.
It has been asserted that the isochronism of the pendulum had been noticed by Leonardo da Vinci, but the passage on which this assertion is founded (as translated from his manuscripts by Venturi) scarcely warrants this conclusion.
The phrase "Adjusted to Isochronism and Positions" does not always indicate the same high quality or the expense assumed in obtaining close rating in different kinds of watches.
How Theory Works Out in Practice and What Isochronism Consists of.
How Theory Works Out in Practice and what Isochronism Consists of.
Adjusted toisochronism indicates that the watch functions uniformly during the entire twenty-four hours running.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "isochronism" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: accompaniment; coexistence; coincidence; concurrence; synchronism; unison
