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WHY Is c Constant?

WHY Is c Constant? - Physics Forum

WHY Is c Constant? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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  #1  
Old 07-07-2005, 08:01 PM
TomGee
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Default WHY Is c Constant?



At any given day in these ngs, there are topics related to whether or
not c is constant, but no one has the courage, apparently, to ask the
subject question or to provide an answer for it in any discussion I
have read since I've been reading science ngs.

Doesn't anyone know the answer? Apparently not, since in a ng about
physics no one has ever ventured a guess as to why c is a constant. I
think it would help the discussion currently raging about whether or
not c is a constant if we first can agree on why and how c can be a
constant.

If we do offer some explanations to that, they must not exclude the
fact of the dual nature of light. I have given my ideas about this
topic in previous posts, so I won't repeat them here. I would like to
hear from those who have thought about it and who may have questions or
some ideas to offer.

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  #2  
Old 07-07-2005, 08:12 PM
Sam Wormley
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Default WHY Is c Constant?


Why do any of the fundamental constants have the values they do?
Someday we will probably find out!
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  #3  
Old 07-07-2005, 08:23 PM
odin
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Default WHY Is c Constant?

> At any given day in these ngs, there are topics related to whether or

It is not known if C is constant. Some think it might be decaying over time
and space. But it is hard or impossible to design a device for measuring it
that you can really trust. And what about G... is that really constant? What
about the Planck length or the Boltzmann constant? What about pi? Could the
ratio of circumference over diameter change as you scale the size of the
circle? There are non-Euclidean geometries where pi is not constant, and
some fundamental physics constants that depend directly on the value of pi.
So it is in part a question of the true geoetry universe. Are any of these
"constants" really constant? And another thought... who gives a shit anyway,
you useless bit of trash?



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  #4  
Old 07-07-2005, 08:24 PM
Sue...
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Default WHY Is c Constant?



TomGee wrote:

Because the electrons will fly apart on the
way to your CRT phosphors if the value was
jumping around.
<<Consequently, the name "fine-structure" constant
for the group of constants below has remained:

http://physics.nist.gov/cuu/Images/alphaeq.gif

where e is the elementary charge,
hbar = h/2 where h is the Planck constant,
epsilon0 = 1/0c2 is the electric constant (permitivity of vacuum)
and 0 is the magnetic constant (permeability of vacuum).
In the International System of Units (SI), c, ,
and 0 are exactly known constants.

[Only registered users see links. ]

Apparently not, since in a ng about

No need to guess.
[Only registered users see links. ]

Sue...


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  #5  
Old 07-07-2005, 08:27 PM
mmeron@cars3.uchicago.edu
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Default WHY Is c Constant?

In article <K0gze.130777$_o.8414@attbi_s71>, Sam Wormley <[Only registered users see links. ]> writes:

Only in terms of other fundamental constants. Ex nihilo nihil fit.

Mati Meron | "When you argue with a fool,
[Only registered users see links. ] | chances are he is doing just the same"
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  #6  
Old 07-07-2005, 09:01 PM
TomGee
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Default WHY Is c Constant?

Since you obviously have no ideas on your own, Worms, why not post why
you disagree with mine?

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  #7  
Old 07-07-2005, 09:03 PM
TomGee
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Default WHY Is c Constant?

And you, Mati Meron, why do you not agree with my idea of why c is
constant, since you also do not have your own idea about it?

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  #8  
Old 07-07-2005, 09:10 PM
TomGee
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Default WHY Is c Constant?

I will take that, Odin, as your admission that you haven't a clue as to
the answer for the question, which BTW assumes that c is constant.
Read my lips: This is not another dumb discussion about whether c is
constant or not, as I did previously so state in my topic post. That
is not the issue here, and simpletons like you who can't understand
simple explanations are excused from responding to the question.

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  #9  
Old 07-07-2005, 09:34 PM
TomGee
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Default WHY Is c Constant?



Sue... wrote:
Good try, Sue, but electrons cannot move at c because they have mass.
Your answer may have some relation to the question, however, that's why
it was a good try even though provided tongue-in-cheek.
I do appreciate your response, but I cannot see where there is anything
mentioned wrt to the question in your reference above. The site
certainly manages to show how constants can be derived mathematically,
and I am so math-impaired that I cannot argue against their claims at
all well, but I am unable to find where they explain why c is a
constant. The question is not how to make c into a constant, nor
whether or not it is a constant,
but rather, it assumes c is a constant and asks, why is it a constant?

Why is it that the speed of light is constant, assuming that it is, to
all observers moving relatively to each other? How can that be? What
is the magical process that provides such a counterintuitive
observation? Plus, what about the particles of light? How can they
move at c as the light wave spreads out as a sphere and leaves gaps
between the photons associated with the wave?

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  #10  
Old 07-07-2005, 10:57 PM
Martin
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Default WHY Is c Constant?

TomGee wrote:

Here is my take on your question, and it's one I have asked myself - often.

Firstly I'm not a physicist or mathematician, I'm an Engineer and
mathematician.

The speed of light is assumed to be constant - within a defined frame -
because it explains the universe as it is observed. If you/anyone thinks
this is wrong, then you/others are free to come up with a mathematically
consistent view of the universe that better fits physical observation.

(ok, my first real post here - how did I go?)
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