. Watch and clock escapements; . Fig. 153 Fig. 153 forked arm was not thought of, for the pendulum itself formed apart of the verge. A far-reaching step had been taken, but it soonbecame apparent that perfection was still a long way off. The crown-wheel escapement forcibly incited the pendulum to wider oscillations ;these oscillations not being as Galileo had believed, of unvaried dura-tions, but they varied sensibly with the intensity of the motive power. THE ATTAINMENT OF ISOCHRONISM BY HUYGENS. Huygens rendered his pendulum isochronous; that is, com-pelled it to make its oscillations of equ
. Watch and clock escapements; . Fig. 153 Fig. 153 forked arm was not thought of, for the pendulum itself formed apart of the verge. A far-reaching step had been taken, but it soonbecame apparent that perfection was still a long way off. The crown-wheel escapement forcibly incited the pendulum to wider oscillations ;these oscillations not being as Galileo had believed, of unvaried dura-tions, but they varied sensibly with the intensity of the motive power. THE ATTAINMENT OF ISOCHRONISM BY HUYGENS. Huygens rendered his pendulum isochronous; that is, com-pelled it to make its oscillations of equal duration, whatever mightbe the arc described, by suspending the pendulum between twometallic curves c c, each one formed by an arc of a cycloid andagainst which the suspending cord must lie upon each forward or i6o Watch and Clock Escapements.
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Keywords: ., bookcentury1900, bookdecade1900, bookidwatchclockes, bookyear1904
