Metrics
---------------


Coulomb
^^^^^^^^^^

In a circuit, charges (electrons) flow.
This amount of charge is extremely huge.
The *Coulomb* unit allows to count them more easily.
Thus, :math:`1C \approx 6.241e^{18}` charges (electrons in our case).

Newton
^^^^^^^^^^^
It is a unit of force.
It is indirectly used in electronics (see Joule).
One Newton is the force required to accelerate :math:`1Kg` of mass, at a rate of
:math:`1m.s^{-1}` every seconds. 

.. math::
	[N]=kg.m.s^{-2}