isochronism

Effects produced when the isochronism of the shocks is not perfect.

From Scientific American Supplement, No. 401, September 8, 1883 by Various

In order to produce a note, the succession of shocks must not deviate much from isochronism.

From Scientific American Supplement, No. 401, September 8, 1883 by Various

The discovery by Galileo of the isochronism of the pendulum, followed by Huyghens’s adaptation of that principle to clocks, has been one of the greatest aids to accurate observation.

From History of Astronomy by George Forbes

Dr. Hooke, the inventor of the balance spring, soon discovered it could be manipulated to isochronism, i.e., so arcs of different extent would be formed in equal time.

From Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology by Anonymous

We obtain the notes of both circles, one of which is the octave of the other, if there is no isochronism between the shocks.

From Scientific American Supplement, No. 401, September 8, 1883 by Various