Dark is doubtful..

[xelasnave]

What is it with humans that when confronted with something they don't understand or nail down with certainty they will invariably reach for the qualification of black or dark.

Black holes, dark matter ..dark energy.

Have these folk an inherent fear of the dark? Is it a left over of a childhood that saw a night light left on in their room?

Why would black holes be black...why would energy be "dark" why because it can not be proved do we have to call missing matter dark.

I was reading last night some one is saying that black holes may not be black..oh well whatever keeps you occupied Iguess... this chap or team..are looking for "black holes"without an event horizon... is there an inconsistency here or is it just me... they have it on good reasoning as they have worked out the math... I think some get a little carried away with what they can reduce to a speculation on paper and claim they are correct because their sums add up..

Well the sums are great but lets realise sums are only part of the evidence... it frustrates me that so many see math as infallible and therefore deduce that their ideas are also infallible.

I dont like the term black hole... I doubt if it needs to be black and they in no way could be described as holes...
Dark matter also is something we are asked to accept yet I am still waiting for reasonable proof of it ...and not via an implication based on what I think is a flawed view of gravity... take away attraction as the operator and the need for dark matter disappears.

So why this preoccupation with all difficult matters being painted black... what must this sort of person think when they see a black man or lady in the street.
alex

[Entropy]

Black holes with event horizons are most definatly black (well not purely black if you take into account Hawking Radiation, but lets not start talking Quantum, because im not good at it ). Light can not escape therefore, black is the only colour they could be.
Dark Matter is called such, not because we cant prove it, only because we cant see it yet we can observe its effect on the 'light reflecting matter' in the universe.

These things are definatly not fudge factors, they are real tangible and observable phenomena

[xelasnave]

Sorry to be late in offerring a thank you for your input Entropy... but I thank you now.
If we consider the concept that is put to us for a black hole one could reasonably assume that such an object would have no light coming from it that could not escape.

What activity in such a place would generate any light..

I have and old mag showing Vera Rubin with plates offerring evidence of dark matter, and I have followed the concept and I am not convinced the attempts to prove its existence by inferrence holds any validity other than a wish that it is there..if there is so much of it one would think they would have a trailer load or two at least by now.

Now dark energy is a fact..look at any galaxy ..it is held together and in place by an external pushing force..they call this dark energy..I call this dark energy gravity.. but in my Universe gravity pushes..it is a universal pressure that requires no dark matter.

I still think it is unfortunate and unimaginative that when presented with something we can not nail down it is called black.. as I said those who resort to such a qualification must have needed a night light such was the mystery of the darkness they were afraid of.

But I found it very amusing that given the attributes of a black hole there is now a team following a belief that a black hole can exist without an event horizon... persoanlly I think it is a grab for head lines and to get noticed..unfortunately it seems that their coments were only noticed by a nutter...me:lol :
alex

[ngcles]

Hi Alex & All,

And, don't forget black-body radiation either while you are at it! (Or does this ruin your argument?)

Best,


Les Dalrymple
Contributing Editor
AS&T

[joe_smith]

Alex, you my find this interesting regarding dark matter, could the universe be a hologram ???

http://aboutfacts.net/Astronomy28.htm

[ballaratdragons (Ken)]

An Aircrafts 'Black Box' is Yellow

[xelasnave]

Originally Posted by ngcles

Hi Alex & All,

And, don't forget black-body radiation either while you are at it! (Or does this ruin your argument?)

Best,


Les Dalrymple
Contributing Editor
AS&T

Like so many ladies I never think I have lost the arguement but only that I have failed to make my point quiet clear.
alex

[xelasnave]

Originally Posted by joe_smith

Alex, you my find this interesting regarding dark matter, could the universe be a hologram ???

http://aboutfacts.net/Astronomy28.htm

No it could not ...mmm well maybe if it works by push.
alex

[xelasnave]

Originally Posted by ballaratdragons

An Aircrafts 'Black Box' is Yellow

This is because there is information contained therein that can be reached...so in fact they need not stay in the world of mystery so as to be called black... but after most crashes I bet they are probably black..burns and all that.

So is black a color? maybe it is a very dark grey and if so it is then all color (white) mixed with a little of absence of all color...

Why are the bad guys always dressed in black and the good guys in white...
I wear black exclusively but am not one of the bad guys ...
Who was the one to give black and dark such a bad rep. ?

So if a balck hole has some radiation it must be grey or at least some color but not simply black... and of course it is not a hole but a super consentration of mass... so why not call them grey super massive masses? but grey has a connetation of being old... mmm old super massive masses.




alex