This may be the first published observation of what is now called " coupled oscillations ".
2.
After the vehicle became airborne, an uncontrollable roll and pitch-coupled oscillation started that forced each of the three wheels into the ground in turn.
3.
Huygens also observed coupled oscillations : two of his pendulum clocks mounted next to each other on the same support often became synchronized, swinging in opposite directions.
4.
Coupled oscillation and synchronization ( " the tendency of two limbs to move at the same frequency " ) appear to be easier in all patterns and also required by certain patterns.
5.
Where f _ e, f _ o are the frequencies of even and odd coupled oscillations of unloaded pair of the resonators and f _ 0 = \ sqrt { f _ ef _ o }.