sci.physics.electromag

On 28 mar, 05:03, shsfowcn...@mailinator.com wrote:
> Hi all,
>
> I wanted to ask for an explanation on the relationship between photons
> and electrons when it comes to visible light and electromagnetic
> radiation.

The actual relation is that anytime an electron is forced to slow
down, the energy now in excess evacuates as a photon. The
process is called bremmstrahlung, and although all occurences
boil down to this, it is seldom refered to as such.

For example, when an electron moves to an orbital closer to the
nucleus of an atom than the distance it previously occupied, it
accumulates through acceleration more energy than is required
to stabilize at this closer distance. As it stabilizes a photon
is emitted.

> I read that light is electromagnetic radiation and also that it is
> made out of photons.

That' what was observed by Wien, mathematically described by
Planck and proven by Einstein with his photoelectric proof. He
got the Nobel for this.

> If both of these is true, is electromagnetic radiation a photon (or
> photons) moving across space?

Yes. At the speed of light.

> And why are the photons we receive in our eyes called electromagnetic
> radiation?

Because each of them, after having been emitted previously by a
slowing
down electron, travels as a self sustaining and self propelling
quantity
of energy as part of its energy oscillates between an electric state
and
a magnetic state.

If you want to play a little with an equation that can fairly
accurately
represent it, you can use the following.

Energy =3D (hc/(2 lambda))_Z +
[((eps0 E^2)/2)_Y cos^2(wt) +(B^2/(2 mu0))_X sin^2(wt)]V

Where E and B are the standing oscillating electric and magnetic
fields of the photon and V is the integrated spherical volume that
the energy of the photon would occupy if it was statically
compressed into the smallest sphere possible.

lambda =3D wavelength of the photon
E=3D(pi e)/(eps0 alpha^3 lambda^2)
B=3D(mu0 pi e c)/(alpha^3 lambda^2)
V=3D(alpha^5 lambda^3)/(2 pi^2)

e is the elementary charge
eps0 is the electrostatic permittivity constant of vacuum
alpha is the fine structure constant
mu0 is the magnetostatic permeability constant of vacuum
c is the speed of light

It is also possible with these localized fields to explain
why they tend to move in a straight line when no
outside force is interfering, and why they self-propel.

This is explained in the following paper. The E and B fields
and the Volume mentioned up there are derived and
explained in this paper if you are interested.

http://pages.globetrotter.net/srp/discrete_electromagnetic_fields.pdf

Andr=E9 Michaud