Re: is perpetual motion possible ?


"ruylopez" <a680086@xxxxxxxxxxxxxxx> wrote in message
news:g3j7k5xvks.ln2@xxxxxxxxxxxxxxxx
On Jul 6 2008 2:52 AM, Rob wrote:

None. Gravity, or a gravitational field, does not of itself possess
energy.

If you want to get into basics, the source of the energy - of solar
power -
is the conversion of matter into energy according to the Einstein
equation
during the various fusion processes occuring in the Sun. Gravity forces
the
nucleons close enough together to react, the strong nuclear force does
the
rest. However, neither gravity nor the strong force are the source of the
energy.


I guess it's those vibrating strings?

String theory is TTBOMK completely untestable and unlikely to be otherwise
in the forseeable future. It is pretty, though.

The matter that becomes energy in the Sun, if we are going to REALLY go
back, used to be energy right? Best we can tell, at the beginning of this
whole mess, there was no matter at all. Everything was packed so densely
that matter could not exist at all, just energy.

We don't have a description for the state of the universe prior to the big
bang, since the universe did not exist. The physical laws that determine how
this particular universe works were shaped at the time of its creation.
There are theories as to what was going on shortly after the big bang,
including the symmetry breaking which set the relative magnitudes of the the
four basic forces, but I don't think anyone can say what the exact state or
composition of the universe was at zero hour.

So I guess, we are running off the incredible amount of energy it took to
compact everything into the singularity that "exploded" as the Big Bang.

No, we are running off of the energy released at the time of the big bang.
We have no knowledge of how the primordial singularity came into being, nor
in fact whether it was a singularity at all, under the physics in play at
the 'time' of its existance
Bear in mind that under current physics, if the universe started as a
singularity, it still is one. From memory, astronomers haven't found enough
matter in the universe to close it yet, so maybe it wasn't a singularity.

I guess this is where (insert your favorite diety) comes in. But can't
gravity do that?

Do what?

Cheers, Robbie.



.

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