... The Star of David can also be seen through the opposite facets of the octahedron or icosahedron as well as through the cuboctahedron. In other words,...
584
Alan Michelson
amichelson2002
Aug 2, 2004 5:20 am
Next on the CBS Amazing Race: the Great Pyramid challange http://www.cbs.com/primetime/amazing_race5/popups/next_on.html ...
585
Michael Donovan
jayennseth
Aug 2, 2004 5:59 am
Am I believing this???? Look at the Preface of book. That is real. So this new math is high interest in high circles. Again I suggested that you do a...
586
mcyberliver
Aug 3, 2004 3:47 am
... wrote: An Olympic symbol can be derived from a Golden Rectangle (a rectangle 1 unit high by Phi units long). The technique for doing this is shown at...
Hi everyone, I am working on a personal project right now that I wonder if you could perhaps advise me on! I am making a pentagonal dodecahedron frame (for ...
589
mcyberliver
Aug 4, 2004 4:14 am
"...he discovered at last that with great concentration and self- control he was able to change direction and bend wherever he chose. So he did, and made an ...
590
Michael Donovan
jayennseth
Aug 4, 2004 4:49 am
Did you see the op ed on physics in Today's NYTimes? Ostensibly Hawkins and some junk known to be junk. The concern is how things will develop. But,...
591
Alan Michelson
amichelson2002
Aug 4, 2004 6:00 am
... Now, if only those Russian cabbies know where the choo-choo trains and the airports are! ;-) ... The pit-stop where they start; but now, they're on their...
592
Dan
polychoron
Aug 4, 2004 3:18 pm
... Has ... tips on ... I think such a piece you would have to craft yourself. I can't imagine that anyone would make a 3 way with the right dihedral angles of...
593
Alan Michelson
amichelson2002
Aug 4, 2004 5:01 pm
Where did you get that picture of the tri-connectors? Perhaps, that's where you can get the actual connectors! Alex Leeor <alex@...> wrote:v\:*...
594
Alex Leeor
aleeor9
Aug 4, 2004 5:10 pm
Hi Dan, Thanks for responding.. Looks like this will take a little more time than I hoped! I have found someone who will make me a jig that will do the job.. I...
595
Alex Leeor
aleeor9
Aug 4, 2004 5:11 pm
Yeah.. maybe! It was from a guys website who makes these as well for therapeutic purposes. He sells the whole kit for around $8000 though so I don't know that...
596
Dan
polychoron
Aug 4, 2004 6:46 pm
I didn't see the picture before but now I think I know what they are. They may be those end caps for copper pipes soldered or welded together at the right...
597
Dr. Burch
paulaeburch
Aug 4, 2004 7:13 pm
... diameter. It's ... If you can't find or make the connectors, there is another possible approach. When I was a graduate student in biology, back in the...
598
Alex Leeor
aleeor9
Aug 4, 2004 7:49 pm
Hi Dan, You go it totally.. I just need to have the copper end caps soldered or welded together at 108 degrees so the pipes can slip in.. I don’t want to ...
599
Paula Burch
paulaeburch
Aug 4, 2004 7:58 pm
Here's a link to my weblog on math toys: http://www.pburch.net/toys/B1915068958/ It's just reviews and photos, not a toy store, though there are links to toy...
600
Alex Leeor
aleeor9
Aug 4, 2004 9:21 pm
Hi Paula, What a fun story!.. it’s great seeing all the ideas that everyone is coming up with.. and yours is no exception!.. Well. I had thought about...
601
Paula Burch
paulaeburch
Aug 4, 2004 9:37 pm
... coming ... something ... to get ... place.. I ... place.. ... of it..? Oh, absolutely. My pieces were six inches shorter than yours (though I had more of...
602
Paula Burch
paulaeburch
Aug 4, 2004 9:43 pm
... I just realized what an embarrassing mistake I made there. :-) Both icosahedrons and dodecahedrons have thirty edges, I *knew* that.... -- Paula Burch ...
603
mcyberliver
Aug 4, 2004 11:42 pm
... <mcyberliver@y...> wrote: Our group is devoted to the study of Single and Multi-variable calculus. Topics open for discussion include: limits and...
604
Alan Michelson
amichelson2002
Aug 5, 2004 2:35 am
Anyone remember the Flexagons? No, not http://mathworld.wolfram.com/Flexagon.html but rather the construction set of the 1950's that lets you build [Platonic,...
605
Paul Hildebrandt
paul@...
Aug 5, 2004 3:26 pm
I had a set of these in the 60s and even developed my own version based on the rhombus with diagonals in the divine proportion (i.e., rhombic triacontahedron...
606
Alan Michelson
amichelson2002
Aug 6, 2004 5:22 am
... Why didn't you make the rhombus for [that other zonohedron] the rhombic dodecahedron? I have heard that http://www.clusterstructures.com/ has a...
607
Polytopia@yahoogroups...
Aug 8, 2004 5:20 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /FRACT010.jpg...
608
Polytopia@yahoogroups...
Aug 8, 2004 5:22 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /FRACT004.GIF...
609
Polytopia@yahoogroups...
Aug 8, 2004 5:23 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /FRACT006.GIF...
610
Polytopia@yahoogroups...
Aug 8, 2004 5:27 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /FRACT008.GIF...
611
Larry Rafey
lrafey
Aug 8, 2004 10:16 pm
A soccer ball is made of pentagons and hexagons, with three edges meeting at each vertex. Why MUST the number of pentagons used be twelve ? LD Rafey Yahoo!...
612
dan duddy
polychoron
Aug 9, 2004 5:12 am
... The common soccer ball shape is actualy a truncated icosahedron. The icosahedron has 12 corners with 5 equilateral triangles meeting at each corner. When ...
