On Mon, 27 Sep 1999 18:19:34 -0400, Chris Maryan <mar### [at] mcmasterca>
wrote:

>I tried looking for this myself, but I couldn't find it. If you have
>some idea of where else to look, I would appreciate it. Thanks

I would start by looking at www.hornet.org (if it is still up, there
were rumors that it would be brought down once and for all :( ) and
www.scene.org, as well as ftp.cdrom.com, of course.


Peter Popov
ICQ: 15002700

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When making my lava lamps I just used negative strength coupled with
positive strength blob components to fake the interactions.

Bob

Chris Maryan <mar### [at] mcmasterca> wrote in message
news:37EFE977.7E7F6AFC@mcmaster.ca...
> I studied real lava lamps a bit to get the basis for this project
and
> have come to the conclusion that wax that blobs together is
considerably
> more interesting. I think my interpretation of the physics of the
motion
> is fairly complete, at least to the point that it could fake what
really
> happens fairly well. The only thing missing is some algorithms for
the
> graphics/blobing.
>
> Ron Parker wrote:
> >
> > On Mon, 27 Sep 1999 11:09:40 -0400, Chris Maryan wrote:
> > >The area would be spherical when the center point is
> > >away from any other center point/area groups and would blend
together
> > >with other groups when they are close (Think blobs, defined by a
center
> > >point and having a specific radius when not influenced by other
blobs).
> >
> > This isn't true of the lava lamp in my son's room.  The blobs in
his
> > lamp don't tend to merge due to surface tension and/or temperature
effects,
> > so most of them end up being either spherical or ellipsoidal after
they
> > separate from the mass of wax at the bottom of the lamp.  They
tend to
> > change eccentricity as they rise, due to oscillations induced by
the "neck"
> > breaking and a large quantity of wax being pulled toward the
center of
> > the blob by surface tension.  There is also an area at the top of
the lamp
> > populated by a bunch of spheres of various sizes, packed together
(and thus
> > no longer spherical, but you might get away with representing them
as spheres
> > for POV purposes.)  Every now and then, one of those spheres cools
off enough
> > to sink back to the bottom but it doesn't attempt to merge with
blobs on their
> > way up; it seems to bounce or roll off of them.  How long it takes
a sphere to
> > cool and fall is probably a complex function of its radius (the
ratio of volume
> > to surface area is proportional to radius) and its position within
the cluster
> > (the temperature gradient is probably higher near the outside of
the lamp, so
> > heat transfer takes place more quickly.)
>
> --
> Chris Maryan
> mailto: mar### [at] mcmasterca
> ***
> Will work for cash.
> ***
> Email me if you are interested in donating
> to the Chris Maryan needs money fund.
> We will also accept donations to the Chris
> needs a Pentium III or SGI workstation
> fund and the Chris needs a car fund.

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By allmeans, send the package. This should give me some ideas of what to
look for. Just throw it in a .zip file and send it to
mar### [at] mcmasterca
Thanks,

Remco de Korte wrote:
>
> Well, it appears the link I had is dead. <8{
> 
> I still have some of the demos from the site but not all of them have sources
> (the best not - of course...). If you like I could mail the package (<1Mb).
> 
> I would give you some URLs but the ones I tried have appear to be all
> outdated...
> 
> Sorry.
> 
> Remco

-- 
Chris Maryan
mailto: mar### [at] mcmasterca
***
Will work for cash.
***
Email me if you are interested in donating
to the Chris Maryan needs money fund.
We will also accept donations to the Chris
needs a Pentium III or SGI workstation 
fund and the Chris needs a car fund.

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Chris Maryan wrote:
> 
> By allmeans, send the package. This should give me some ideas of what to
> look for. Just throw it in a .zip file and send it to
> mar### [at] mcmasterca
> Thanks,
> 

It's on its way.

Have fun!

Remco

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Thanks, I got the package. Some of them are quite nice. I am now
devoting a considerable amount of time on studying the way they work
(too much time probably, considering the fact that I should be doing
homework). The visuals in these are good, but I think the physics are
neglected, something I hope to look into in my version.

Remco de Korte wrote:
> 
> Chris Maryan wrote:
> >
> > By allmeans, send the package. This should give me some ideas of what to
> > look for. Just throw it in a .zip file and send it to
> > mar### [at] mcmasterca
> > Thanks,
> >
> 
> It's on its way.
> 
> Have fun!
> 
> Remco

-- 
Chris Maryan
mailto: mar### [at] mcmasterca
***
Will work for cash.
***
Email me if you are interested in donating
to the Chris Maryan needs money fund.
We will also accept donations to the Chris
needs a Pentium III or SGI workstation 
fund and the Chris needs a car fund.

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