  The kinematical characteristics of distinct infalling homothetic fields are
discussed by specifying the transverse subspace of their generated congruences
to the energy-momentum deposit of the chosen gravitational system. This is
pursued through the inclusion of the base manifold's cotangent bundle in a
generalized Raychaudhuri equation and its kinematical expressions. Exploiting
an electromagnetic energy-momentum tensor as the source of non-gravitational
effects, I investigate the evolution of the mentioned homothetic congruences,
as they fall onto a Reissner-Nordstrom black hole. The results show remarkable
differences to the common expectations from infalling congruences of massive
particles.
