Another casualty of the black hole of cyberspace. Gene
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- To: Met List <meteorite-list@meteoritecentral.com>
- Subject: Re: Pressure == 0 at the center of a mass?!
- From: Gene Roberts <eroberts@ntplx.net>
- Date: Wed, 17 Jun 1998 19:01:26 -0400
- References: <01bd98ae$bff86360$11d11fd1@crc3.concentric.net> <3585F024.EF7F42D5@ntplx.net> <3585F548.B3530026@arachnaut.org> <3586ABDA.777EDCEE@ntplx.net> <358748EB.BEF848DC@arachnaut.org>
Jim Hurley wrote: > > I am having trouble with this idea of zero pressure at the center of an > object. I have no problem with zero weight and unchanged mass. > > Firstly, gravity attracts, or pulls towards, not pulling 'away equally > in all directions'. I would say that all parts of the object are > compressing and attracting equally at the center, so you fell pressure > from all the weight in every direction > above you. > Hello Jim, You seem to have found the fly in my ointment and made some excellent points (sorry, again) in a most entertaining manner. We are facing an interesting dilemma: the Albion vugs exist as apparently primary formations and shouldn't be there. -- One of these days I'll get to finish a message in one shot. -- Anyway, I understand the point you are making -- If the center were hollow, the would be no pressure, but given a liquid or solid core we are, as it were, caught between a rock and a hard place. Now we have to consider many unknown variables in looking at the Albion vugs: How big was the Albion parent body; what transitional episodes did the core go through during development; what might be the affect of a slow moving, expanding plume in a solid, but plastic core; what would be the affect if the vug area were offset from the core, etc. I think I'll be happy knowing the vugs are there and people much smarter than I wish they weren't. ;-) Gene P.S. Is anyone interested in a slice of Dimmitt with what appears to be an inclusion of some kind of red plastic reflective material?
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