(January 21, 2010 at 7:09 pm)TruthWorthy Wrote: ... and there is evidence to suggest that the speed of light is universally slowing down. I understand what refraction is, and what a spectrum is about.

Light often speeds up and slows down, depending on the composition of the area it is travelling through. It is only in a vacuum that light has a constant speed, this is still a good medium of measurement for space though, because although empty regions of space are not entirely vacuums, the percentage of deviation from the vacuum speed of light is negligible.

There is a creationist claim that the vacuum speed of light is slowing down, but it's far more likely that our skill at measuring has increased.

I would expect that a 'control experiment' would have taken this into account. I'm believe the tests were conducted through air.

(January 21, 2010 at 7:23 pm)TruthWorthy Wrote: Why have recent experiments been suggesting that the speed of light is slowing down!? The time/distance (velocity) of light has increased without explanation besides our measurements of time remaining constant.
This means that either - the speed of light has actually changed; or, the normal distances have increased.

The speed of light isn't time / distance. Speed is distance / time.

The speed of light is usually calculated via this equation though: c = λf.
c = speed of light, λ = wavelength, f = frequency.

I'm confused by your assertion that recent experiments have suggested that the speed of light is slowing down. I can't find any such experiments. Please present the evidence.

We can slow down light, even stop it under certain controls, but the speed of light through a vacuum is a physical constant in physics: 299,792,458 m/s.

I'm prepared to be astounded and proved wrong though. Please link us to the experiments. Extra points for the original research papers or some science journal!

The experiments use of the velocity vector is to determine the speed. There's no speed radar for light, so they establish two points and time how long the light takes to cover the distance. They simply determine what speed was necessary.

So if the same instrumentation is used under the same conditions today, there should be no reason for the speed of light to change. It should be constant.

Seeing how the claim of light speed decrease directly relates to the velocity measured, there can be only two reasons (provided same conditions are met etc), firstly that the speed of light has in fact changed; secondly, that the distance has changed.

Under universe expansion theories which are widely supported. The universe is able to expand proportionally which doesn't necessitate accumulating more "non space" region, or literally 'extending' the perimeter.

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I only learned about the light speed changes during a physics lecture in class.

You have still not provided any evidence other than your word (which I instantly distrust since I haven't found any mention of these experiments on the usual sites). I simply do not believe that the speed of light is "slowing down".

So please, present actual evidence!!!

We're talking theory here though, aren't we?
You were asserting that the universe began in a singularity and from there collectively expands to contain more space. And you seem sure that the universe's initiation didn't involve a violent implosion/explosion to occur.
All I have been doing is providing conter argument against this assertion you make.

The Big Bang theory states that all matter was contained within a singularity. At some point in the past (at least 13.7 billion years ago), this singularity started to expand rapidly. You can all it an explosion if you like, but it wasn't technically one. I already quoted Wikipedia on that point.

You haven't been providing counter arguments, you've been pulling seemingly random and unrelated facts out of your ass. Making up stuff isn't counter-arguing! I've provided my evidence in reams; I've talked about red and blue shift and how your understanding of them is wrong.

You have yet to provide evidence that the speed of light is slowing down...that's all I want at this point!

Right-o take it easy.

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I only said there was evidence to suggest the speed of light is slowing down.

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basic article that says nothing

(January 21, 2010 at 11:51 pm)Tiberius Wrote: I already quoted Wikipedia on that point.

Well, that settles it then doesn't it! Hopefully you had your toungue firmly planted in your cheek sir!

(January 22, 2010 at 12:01 am)TruthWorthy Wrote: Right-o take it easy.

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I only said there was evidence to suggest the speed of light is slowing down.

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basic article that says nothing

A world nut daily article... THAT is your evidence?