Re: Is dark matter/energy the gravity from extra dimensions ins stringtheory?

On Fri, 5 Sep 2008 12:44:52 -0400 wrote "Spaceman"
<spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx> in sci.physics with
<lJedna6xHfTZ_1zVnZ2dnUVZ_j2dnZ2d@xxxxxxxxxxx>

The so called "dark matter" is simply "matter that is smaller
than the smallest matter we can detect right now without
a large mass of such matter.

But then, there is still the problem of not seeing it. It being to small is
one thing. The problem with your answer though is, that considering stars that
are several million lightyears away, their light should be dampened like
looking thoruhg a fog, if it were just a matter of smallness. At least that
would be my assumption. After all, if there is such a big body of really
really small stuff, so that you may not see it at closeup (like our air on
earth) it would still have a big effect on such enormous scales.

We simply can see it from "effect" only right now.
Just as long ago, we could not "see" air (molecules) but could
see the "effects".

The only effect that we see is that gravity doesn't work out. Neutrinos have
not yet been detected so they are also hyptothetical. Not sure if they can
account for the mass though.

What makes more sense is to remove the stupid ass limits on
"size" and allow the "size" to be smaller.
How many times can you devide something?
We don't know, and the most basic math says ... infinitely.
Why ignore the basic math if it could be used as basic math?

Well, I think there is a logical limit to it. Just because math can deal with
infinities, doesn't mean that it physically exists. We treat bodies of mass as
points in our math, but they are still bodies of mass and not infinitisemal
small points either. The same reasoning leads to why there is an upper limit
of speed in the universe, which happens to be c. In math we wouldn't need an
upper speed limit either.

And then, there is also the issue with dark energy. If you explain dark matter
light that, then what about the missing energy?

Setting a limit on "size", sets a limit on "reality" that may simply
not be there.
Creating new "dimensions" instead of smaller sizes is more an
abstract, than a physical breakdown.
:)

Well, I agree on that one. Somehow I have the notion, that scientists accept
an extra dimension as the "easy way out" because it also worked in other cases
(like the maxwell equation). :)
--
Gerhard Gruber
SoftICE for Linux - http://pice.sourceforge.net/
http://sourceforge.net/projects/desktoptools
.

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