The size of each particle was identical to the others, the masses were not
identical.  The white particle was set at 150% of the mass of the other
particles which were all the same.  I was thinking of adding some code to
automatically set the size of the particle according to the mass.
I think the formula is V=4/3*pi*R^3 so R=(3/4/pi*V)^(1/3).  I would have to
do a few tests to determine what density to use.

As to whether a large number of particles would settle down into one big
particle or a stable universe, it would depend on the initial conditions.


"Dave Brickell" <d.b### [at] ntlworldnospamcom> wrote in message
news:3c8ce77e@news.povray.org...
> Hi Draco
>
> I like this very much and was going to do something very similar a while
> back. Unfortunatly time and mathmatical problems did not allow me.
>
> Quick question.
>
> -Is the gravity of each particle proportional to its size/mass?
>
> If so I think it would be cool if you got rid of the ground plane then
> started with a few thousand randomly scattered particles. When 2 particles
> collide they join together to form 1 particle with the combined size/mass
of
> the original 2.
>
> I just wonder whether you would end up with 1 big particle or whether they
> would settle into a stable universe/solar system.
>
> Just wondering :)
>
> Keep up the good work.
>
> Dave
>
>
>

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