  As previously shown, the special relativistic dynamical equation of the
Lorentz force type can be regarded as a consequence of a succession of
space-time dependent infinitesimal Lorentz boosts and rotations. This insight
indicate that the Lorentz-Force-like equation has a fundamental meaning in
physics. We show how this result may be spinorially obtained starting out out
from the application of an infinitesimal element of SL(2,C) to the individual
spinors, which are regarded here as being more fundamental objects than
four-vectors. In this way we get a set of new dynamical spinor equations
inducing the extended Lorentz-Force-like equation in the Minkowski space-time
and geometrically obtain the spinor form of the electromagnetic field tensor.
The term extended refers to the dynamics of some additional degrees of freedom
that may be associated with the intrinsic spin, namely, with the dynamics of
three spacelike mutually orthogonal four-vectors, all of them orthogonal to the
linear four-momentum of the object under consideration that finally, in the
particle's proper frame. are identified with the generators of SU(2).
