  Exposing the polarization signatures of the solar chromosphere requires
studying its temporal variations, which is rarely done when modelling and
interpreting scattering and Hanle signals. The present contribution sketches
the scientific problem of solar polarization diagnosis from the point of view
of the temporal dimension, remarking some key aspects for solving it. Our
time-dependent calculations expose the need of considering dynamics explicitly
when modelling and observing scattering polarization in order to achieve
effective diagnosis techniques as well as a deeper knowledge of the second
solar spectrum.
