The constant (D.C.)
current (or tension) remains the reference taught in
electrotherapy. It is true that the electrotherapists
give to him, still, the following virtues and
properties:
Invariability (by
definition).
Regularity of contribution of electric charges
(idem).
A facility for calculations.
A facility with being established or shut down
with precision, to studying the exitables
elements of the human body (neuron, myofibrille). We
suppose that the rectangular impulses are made up
only, with D.C. current.
The practical side
of the D.C. current is especially historical. The
precursors had only the D.C. current at their
disposal for studies. Nowadays, continuously to want to
reduce teaching by this practical side, we reduce our
raisonnment to over-simplification.
