Driven harmonic oscillators are damped oscillators further affected by an externally applied force F(t).

The form of this distribution is similar to the solution of the classical equation of motion for a driven harmonic oscillator damped and driven by a sinusoidal external force.

A parametric oscillator is a driven harmonic oscillator in which the drive energy is provided by varying the parameters of the oscillator, such as the damping or restoring force.

Driven harmonic oscillators are damped oscillators driven by an externally applied force 'F (t)', for example, a Heaviside step function, an Dirac delta function or a continuous sinusoidal force.

Remembering that in PFM an AC bias of a certain frequency causes a deformation of the sample material at that same frequency the system can be considered as a driven harmonic oscillator.

Rocking back and forth pumps the swing as a driven harmonic oscillator, but once moving, the swing can also be parametrically driven by alternately standing and squatting at key points in the swing arc.

A parametric oscillator is a driven harmonic oscillator in which the oscillations are driven by varying some parameter of the system at some frequency, typically different from the natural frequency of the oscillator.