Chapter |

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The electron has
both an intrinsic electric field and an intrinsic magnetic field.

The electron’s intrinsic electromagnetic field has both energy and angular
momentum. In our book, we have the assumption that the electron has the electromagnetic
origin, the electron spin is the electron’s electromagnetic field angular
momentum, and the electron’s self-energy is the electron’s electromagnetic
field energy.

The simplest model of electron spin
is a spinning electrically charged ball, similar to the earth rotating about
its own axis. In this model, the electron’s rest energy equals the
electrostatic potential energy of a sphere of charge *e* with radius _{}:

_{} ? ?/span>(1.1)

In which _{}?/span>is the classical
radius of the electron, _{}?/span>is the electron’s
mass.

Combine electron
mass _{}?/span>with radius _{}, and we get electron
spin angular momentum:

_{}
(1.2)

In which v is the classical
velocity for electron spin.

Then we can obtain
the electron’s classical velocity:

_{}
(1.3)

Combine this with
equation (1.1), thus:

_{}
(1.4)

And so:

_{} ?
?/span>(1.5)

In which _{}?/span>is fine structure
constant:

_{} ?
(1.6)

As we know:

_{} ?
(1.7)

Therefore:

_{} ? (1.8)

Based on the
above model of electron spin, the classical electron velocity is much greater
than the velocity of light! ?/span>Why did the
spinning electric charge ball model fail for the electron spin? The basic
assumption of the above electron spin model is that the electron’s mass
originates from electric field energy.

In our book,
we have an assumption that the electron has electromagnetic origin.?The electron’s self-energy is the electron’s
electromagnetic field energy, which mainly comes from electron magnetic field
energy, in comparison to the electron’s magnetic field energy, the electron’s
electric field energy is much smaller. This is one of the major reasons why the
above electron spin model failed.

We no longer regard
the electron as a point-like particle. Instead, we assume that electrons have
internal structure; inside the electron it has continuum spherical distribution
of both electric charge and magnetic charge. Based upon the charge distribution,
and also according to the Gauss Laws for electric field and magnetic field, we
calculate the electric field and magnetic field distribution inside the
electron, and then we calculate electromagnetic field energy and angular
momentum of the electron.

Then we make the
assumption that both the electron mass and spin have electromagnetic origin.
Thus we obtain the electron’s self-energy from the electromagnetic field
energy, and the electron spin from the electron’s electromagnetic field angular
momentum.

Then we extend our
electron’s electromagnetic model to the proton and neutron, the proton and
neutron also have electromagnetic origin; and we continue our electromagnetic
model to the hydrogen and helium atoms in our book.

In our book, we also
provide a possible solution for the hydrogen atom spectrum, in which the
hydrogen atom spectrum is regarded as the hydrogen electromagnetic field
stationary wave energy spectrum.

The particles that comprise all physical materials include electrons, protons
and neutrons; all of which have electromagnetic origin. Therefore, all materials
have electromagnetic origin.

What
is the electron spin?
ISBN 0-9743974-9-0 Copyright ?2003 Gengyun Li All rights reserved http://www.electronspin.org |