  The apparent nonlocality of the Coulomb gauge external field problem in
electrodynamics is illustrated with an example in which nonlocality is
especially striking. Explanation of this apparent nonlocal behaviour based on a
purely local picture is given. A gauge invariant decomposition of the
Lorentz-force into two terms with clear physical meanings is pointed out. Based
on this decomposition derivation of the Aharonov-Bohm effect in terms of field
strengths alone is given.
