| By subsequent experiment he verified the law, and the isochronism of the pendulum was discovered. |
| A departure from the law of isochronism may then be expected to develop itself. |
| This allows their geometry to be modified for optimal isochronism, the quality of oscillations occurring in equal periods of time. |
| The experimental verification of this fact led him to the important discovery of the isochronism of the pendulum. |
| The angular velocity is regulated by a Watt's governor, which secures an isochronism of the motion independently of the charge. |
| Swiss chronometer-maker, inventor of the spherical balance-spring, with which he did research on isochronism. |
