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Do we understand the propagation of light?

We know that electromagnetic radiation is propagated when an excited electron orbiting a nucleus collapses from a higher orbit to a lower orbit or a higher state of energy to a lower state of energy thereby giving off light.

How well do we understand the process? Do we now understand exactly what’s taking place?
Do we know the shape of light quanta when propagated? Do we understand the reason for the speed of light? And how and why the speed takes place? Can we understand the starting energies and the energies of quanta after many years in space and of the ever-increasing size of light as it travels through space?

Is there an article, study or book that deals with electromagnetic propagation that could explain or explore this subject in detail?

Any reading material recommended would be appreciated.

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Biofreak
Biofreak
9 years ago

Wow, that’s a lot of questions. And unfortunately, they are from a very broad selection of physics. So it will be very hard to get a single book that tells you all the answers. In fact, it would take years of study to get a good understanding of these issues. So if you really want to understand, my advice is get a degree in physics. But, having such a thing myself, I can say a bit. We do understand electromagnetic wave propagation and the speed of light. If it is changing slowly (which it might be, we don’t know) we… Read more »

sednax
sednax
9 years ago

We know that nature tends to want to be in a state of low energy. So if an electron has a chance to be in a lower energy state, it will go there and release an electron (basic quantum mechanics). How it moves there is not really known, because the electron doesn’t circle around an atom, but is located everywhere in the universe, with the biggest probability in a special lob around the atom (also basic quantum mechanics, I can’t explain this very well in English). You can’t speak of a shape of light quanta. It is a photon, a… Read more »

Tommy N.
Tommy N.
9 years ago

As the electron moves from different shells, photon is given off

light waves are affected by the phenomena of reflection, refraction, diffraction, absorption and scattering.

In free space, all electromagnetic waves (radio, light, X-rays, etc) obey the inverse-square law

sorry if i cant be of help..i’m lousy..
http://en.wikipedia.org/wiki/Photon
http://en.wikipedia.org/wiki/Radio_propagation

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