Q is the energy that is stored in a pendulum divided by
the energy that is dissipated during every period of oscillation:
Q is the energy that is stored in a pendulum divided by
the energy that is dissipated during every period of oscillation:
Its maximization is an important prerequisite for the
construction of an accurate clock. In a typical pendulum clock, It can
be obtained using a high mass bob (great stored energy) aerodynamically
shaped (low air resistance and consequently small lost energy per period
of oscillation).
A high value of Q means a reduction of the force used to keep the pendulum
in motion. Any slight variation of this force disturbs the oscillation.
Reducing the applied force, its control is improved and this increases
the clock stability. Furthermore, other energy losses deriving from friction
in the escapement motion are minimized.