Freethought & Rationalism Archive

Shadowy Man · 01-25-2003, 07:46 AM

Quote:

Originally posted by Hawkingfan
After thinking about this a little more, I would guess that it is both light and electromagnetic spectrum. Visible light is part of the EM spectrum and a single photon gives off light when it is emitted from an atom when an electron changes allowed orbits.

A photon is light. Now you guys are just arguing semantics.

Mr. Sammi · 01-25-2003, 07:53 AM

Thanks fellas and gals,

I think I am starting to get the drift, beginning to understand. I think this is because some write clearly on the subject and when this is done it is not confusing to me. I believe also because of our perceptive simultaneity block in writing & reading, when one point is clearly presented after another in a cohesive way, as some of you surely do, the physics concepts are easier to follow.

Some have problems when one area of subject matter has compound entries and they try to explain using our linear writing and reading tools, the various components of the subject matter become jumbled and instead of communicating clearly - they clearly mumble. It is easy to mumble in physics as I have found.

Thanks, for all the responses to my basic questions, you have all been most kind. I hope I can reciprociate sometime. I am usually haunting the Philosophy section of the board, but sometimes a little science draws me away - not big science, little science.

* * *
A little parting thought. Ever thought that from the big-bang (early universe) some of the primary quantum fluctuations have been propogated and may still BE active now. Perhaps in an unrecognisable form. Where can they BE found? Where would we look for them?

Sammi Na Boodie (thinking hard again BUT contented)

Answerer · 01-27-2003, 08:01 AM

Quote:

Originally posted by Jesse
[B]Jesse:

Anyway, this is sort of a distraction from the main point, since it is true that quantum fluctuations can create a temporary increase in energy. However, this is only temporary, a "debt" which must be "payed back" later, which is why I said that it seems like a semantic issue whether or not you would really call this a "violation of conservation of energy".

I disagree. There are many legitimate views on energy time uncertainly relationship but this is certainly not one of them. There is nothing in quantum mechanics that license the violation of energy conservation even for a brief moment and no authorization for such a process in the derivation of the enery time uncertainity. Besides, the physicists' understanding of virtual photons and vaccum fluctuations are still flawed or incomplete. Nor there is an experimental discovery or determination of the existence of virtual photons or their would-be behaviour.

Darth Dane · 01-27-2003, 01:06 PM

"as i understand inflation theory, there was a time when energy was flung faster then the speed of light (big bang?) in all directions. then the expansion began slowing and matter formed and through gravity, the matter organized itself in a way. it came together to form stars ect."

Did gravity exist before the big bang?

If not, then gravity itself is energy as well as anything else!

DD - Graved Spliff

01-25-2003, 07:53 AM	#122
Mr. Sammi Banned Join Date: Jun 2002 Location: Montr�al Posts: 367	- starting to get the gist - Thanks fellas and gals, I think I am starting to get the drift, beginning to understand. I think this is because some write clearly on the subject and when this is done it is not confusing to me. I believe also because of our perceptive simultaneity block in writing & reading, when one point is clearly presented after another in a cohesive way, as some of you surely do, the physics concepts are easier to follow. Some have problems when one area of subject matter has compound entries and they try to explain using our linear writing and reading tools, the various components of the subject matter become jumbled and instead of communicating clearly - they clearly mumble. It is easy to mumble in physics as I have found. Thanks, for all the responses to my basic questions, you have all been most kind. I hope I can reciprociate sometime. I am usually haunting the Philosophy section of the board, but sometimes a little science draws me away - not big science, little science. * * * A little parting thought. Ever thought that from the big-bang (early universe) some of the primary quantum fluctuations have been propogated and may still BE active now. Perhaps in an unrecognisable form. Where can they BE found? Where would we look for them? Sammi Na Boodie (thinking hard again BUT contented)

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01-27-2003, 01:06 PM	#124
Darth Dane Veteran Member Join Date: Dec 2002 Location: Required Posts: 2,349	"as i understand inflation theory, there was a time when energy was flung faster then the speed of light (big bang?) in all directions. then the expansion began slowing and matter formed and through gravity, the matter organized itself in a way. it came together to form stars ect." Did gravity exist before the big bang? If not, then gravity itself is energy as well as anything else! DD - Graved Spliff

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