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- Newsgroups: alt.pagan
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!casbah.acns.nwu.edu!lunde
- From: Albert-Lunde@nwu.edu (Albert Lunde)
- Subject: Re: Quilts (was: Re: sowing bags)
- Message-ID: <1992Dec31.052622.10080@news.acns.nwu.edu>
- Followup-To: alt.pagan
- Originator: lunde@casbah.acns.nwu.edu
- Sender: lunde@casbah.acns.nwu.edu (Albert Lunde)
- Nntp-Posting-Host: unseen1.acns.nwu.edu
- Reply-To: Albert-Lunde@nwu.edu (Albert Lunde)
- Organization: Ministry of Silly Walks
- References: <1992Dec29.183630.23309@nntpd.lkg.dec.com> <lk3h76INNr32@news.bbn.com> <1992Dec30.204735.2100@nntpd.lkg.dec.com>
- Date: Thu, 31 Dec 1992 05:26:22 GMT
- Lines: 45
-
- In article <1992Dec30.204735.2100@nntpd.lkg.dec.com> boylan@ljohub.enet.dec.com (Steve Boylan) writes:
- >In article <lk3h76INNr32@news.bbn.com>, dhardin@bbn.com (Dawn Hardin) writes:
- >> techniques are easy to do and the patterns are easy to find.) I still
- >> haven't found a five pointed star pattern, and haven't figured out how to
- >> draft one. I once saw something called a Moore-Penrose (?) tiling in a
- >> math journal that can make five pointed stars, but they didn't look like
- >> pentacles at all.
- [...]
- >If I may continue the high-falutin' talk, the problem with the five-
- >pointed star is that it yields a pentagon as your basic building block,
- >and the pentagon won't tesselate the plane. (For those of you who
- >AREN'T math dweebs and don't have a dictionary handy, pentagons won't
- >fit together neatly to cover a plane.)
- >
- >Eight-pointed stars are usually embedded in a square, and six-pointed
- >stars in a hexagon. Both tesselate.
- >
- >To use five-pointed stars, you'll have to make them part of a design
- >that isn't based on the pentagram. For example, you can put a
- >pentacle inside a square or hexagon.
- >
- >Or just sew a few pentacles here and there in random locations!
- >
- >If the "Moore-Penrose" tiling you mentioned is the tiling I think it
- >is, what you get aren't pentacles. The Penrose tiles I know are
- >aperiodic - there are two simple shapes that fit together to produce
- >a pattern that never repeats! I think that would make a great
- >pattern for a quilt; I've figured I could make ceramic floor tile
- >at some point!
-
- I think there are some designs in Islamic art that use 5 fold or 10 fold
- symmetry. I agree you can't tile the plane with pentegrams.
-
- Penrose Tiles have 5 fold symmetry on the average I think. I'm not
- sure, but it may be possible to fill the space between pentagons or
- stars on various lattices with Penrose Tiles (they can fill the plane or leave
- various shaped "holes".
-
- You might make a basic unit for a quilt by mixing pentagons, either
- alone or in inverted pairs and say, triangles.
-
- --
- Albert Lunde | Interfaith | *Y*Y* "A branch on the
- Albert-Lunde@nwu.edu | Bisexual | *Y* tree of life"
- | Feminist |.......|.........................
-