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Re: Tesla Coil RF Transmitter

Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>

Tesla list wrote:

Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx>
Slow reasioning. Current is the movement of electrons past a point in a
given time. A magnetic field is produced any time electrons move past a
given point in a given time or current flows. As the earth spins electrons
in the earth surface move past a given point in a given time (one day) and a
N-S magnetic field is produced. This fact is true in a sub microscopic world
of atoms and magnoscopic levels of the galixcy


Most of the atoms in the Earth are neutral, with the electric field caused
by the electrons counterbalanced by the opposite field generated by the
protons. The rotation of the Earth is not the cause of its magnetic field.
Not so directly, at least.

The fact of throwing a
battery out a window  to produce a current is subject to real valid debate
because the charge is produced only when a chemical reaction taxes place.
Throwing a static charged object out the window is more valid as electrons
would be moving past a given point in a given time.


There are opposite charges at the poles of a battery, even when no current
is being drawn. Very little in the tiny poles of a 1.5 V battery, or
much more in a Zamboni high-voltage battery. Install two 20 cm spheres
at the ends of a 1.5 V battery, and you have about 1.5*10 pF = 15 pC
in each (The capacitance between two 20 cm spheres separated by 5 cm
is about 10 pF). I am ignoring the fact that the battery body is metallic,
and so it would increase the capacitance if the battery is really
inserted between the spheres.

Antonio Carlos M. de Queiroz