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- Newsgroups: sci.physics
- Path: sparky!uunet!snorkelwacker.mit.edu!news.media.mit.edu!minsky
- From: minsky@media.mit.edu (Marvin Minsky)
- Subject: Re: marbles in a container
- Message-ID: <1992Aug14.030326.27053@news.media.mit.edu>
- Sender: news@news.media.mit.edu (USENET News System)
- Organization: MIT Media Laboratory
- References: <1992Aug13.201500.22023@cs.sandia.gov>
- Date: Fri, 14 Aug 1992 03:03:26 GMT
- Lines: 27
-
- In article <1992Aug13.201500.22023@cs.sandia.gov> sjplimp@cs.sandia.gov (Steve Plimpton) writes:
- >korfhage@weston.poly.edu (Willard Korfhage) writes:
- >
- >> A question came up recently about marbles in a container: If I dump a
- >> bunch of marbles in a container (randomly positioned, rather than
- >> carefully placed), what are the statistics concerning how many points
- >> of contact each marble has with other marbles?
- >
- >> Willard Korfhage
- >> korfhage@weston.poly.edu
- >
- >This is a problem related to grain boundary structure in solids. I
- >have a Xeroxed pg. 304 which I wrote on the top:
- >
- [stuff deleted]
-
- >J. D. Bernal .... quotes the Reverend Stephen Hales in
- >his 1727 book "Vegetable Staticks" (no joke)
- >
- >'I compressed several fresh parcels of Pease in the same Pot with a
- >force equal to 1600, 800, and 400 pounds; in which Experiments, tho'
- >the Pease dilated, yet they did not raise the lever, because what they
- >increased in bulk was, by the great incumbent weight, pressed into the
- >interstices of the Pease, which they adequately filled up, being
- >therby formed into pretty Dodecahedrons.'
-
- But I remember reports of more recent experiments in which the number
-