  Spicules are plasma jets, observed in the dynamic interface region between
the visible solar surface and the hot corona. At any given time, it is
estimated that about 3 million spicules are present on the Sun. We find an
intriguing parallel between the simulated spicular forest in a solar-like
atmosphere and the numerous jets of polymeric fluids when both are subjected to
harmonic forcing. In a radiative magnetohydrodynamic numerical simulation with
sub-surface convection, solar global surface oscillations are excited similarly
to those harmonic vibrations. The jets thus produced match remarkably well with
the forests of spicules detected in observations of the Sun. Taken together,
the numerical simulations of the Sun and the laboratory fluid dynamics
experiments provide insights into the mechanism underlying the ubiquity of
jets: the nonlinear focusing of quasi-periodic waves in anisotropic media of
magnetized plasma as well as polymeric fluids under gravity is sufficient to
generate a forest of spicules on the Sun.
