--A bit about Polytopia-- I used to use some of my fluorescent polyhedron models as decoration for electronic dance music parties (psytrance) in NY. Also i...
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Paul Erlich
emotionaljou...
Oct 1, 2003 9:02 pm
i wanted to see your attachments, but it says they're 'not stored'. can you upload them to the files (or photos) folder of this list instead?...
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allenlubow@...
phi16
Oct 2, 2003 3:21 am
A NYC group gathering sounds great. Sign me up, Dan. Allen...
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Dan
polychoron
Oct 2, 2003 5:43 pm
Hello Polytopians, I've created a new group called Math Art NYC. groups.yahoo.com/group/mathartnyc I decided this is the best way to gather people for the kind...
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mail@...
astrologicon
Oct 2, 2003 6:05 pm
Dear Dan , thank you for the information about the news of zometool. Please visit my website. biagio di carlo via berlino 2, villa raspa, spoltore. 65010...
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Malcolm Schosha
malcolmschosha
Oct 2, 2003 7:41 pm
Dan, One of the NYC public spaces might be good for meetings. The one I know is where the Whitney Museum Anex is located, on 42st, across from Grand Central....
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Stuart Quimby
stuartquimby
Oct 3, 2003 1:50 pm
Hi Dan, Count me in! I'm about 100 mi. upstate from NYC Stuart Quimby Design Science Toys, Ltd. ... -- Stuart Quimby Pres. Design Science Toys, Ltd. 172...
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allenlubow@...
phi16
Oct 3, 2003 4:02 pm
Depending upon how big the group is meeting at my office may be a possibility. We're at 46th St and Ave of the Americas. Allen Lubow...
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Dan
polychoron
Oct 4, 2003 12:46 am
Now that Math Art NYC is running I will automaticaly add people I know from NYC and the tri-state area that would be able to come to a Polytopia meeting. You...
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sikkagurgaon
Oct 4, 2003 6:47 am
Hello Group, I have inspired most from Vedic Mathematics and hopes that you will also take interest. Vedic Mathematics is becoming popular all over the world...
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Dan
polychoron
Oct 4, 2003 5:24 pm
You'll be amazed at how much math content is in the simpsons (one of my favorite shows). www.simpsonsmath.com...
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gaurav sikka
sikkagurgaon
Oct 7, 2003 11:09 am
Hello Friends, Vedic Mathematics Becomeing popular because the uses of Vedic Mathematics are very broad. Sixteen Sutras and thirteen sub-Sutras can be applied...
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gaurav sikka
sikkagurgaon
Oct 8, 2003 6:27 am
Hi Everbody, You can learn Vedic Mathematics (Learn to solve problems 10 times faster)free. Click Here to find this out . ... This group is developed...
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Jon Perry
jon_perryuk
Oct 8, 2003 3:23 pm
I think I have proved this, and I am looking for a respectable journal to publish it. Does anyone on this list have any suggestions? I live in the UK and would...
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Charlie
raveliberator
Oct 19, 2003 10:17 pm
Perplexing observations beamed back by a NASA spacecraft are fuelling debates about a mystery of biblical proportions - is our Universe infinite? Scientists...
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Paul Hildebrandt
paul@...
Oct 20, 2003 9:15 pm
The 120-cell (hyperdodecahedron)seems to be the closest model of the hall of mirrors effect in the dodecahedral universe. I just got a message from artist (and...
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Mike Dubbeld
miike@...
Oct 21, 2003 5:18 am
Re: [Polytopia] Is the universe a dodecahedron?dodecahedron You might want to check this guy out. From alt.sci.physics.new-theories NG Post John Sefton...
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dan duddy
polychoron
Oct 22, 2003 2:55 am
Another possible expolanation for the hall of mirror effect besides the 4d hyperdodecahedron is if the universe was hyperbolic, then dodecahedrons could pack...
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toadboyjoe
Oct 24, 2003 10:14 am
If you have a curve that is a portion of circle, is it possible to figure out the radius of the would be circle? Practical application for me. I make wrought...
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Charlie
raveliberator
Oct 24, 2003 11:24 am
you can just lie two straight pieces at the two endpoints of the curve, each perpendicular the the tangent of the would-be-circle at the endpoints and where...
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J Vincent Beall
vincebeall
Oct 24, 2003 5:24 pm
It is solvable with trigonometric functions. You must find the midpoint on the arc, and construct a perpendicular line that bisects the arc and the chord that...
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mikebispham@...
mikebispham
Oct 24, 2003 5:47 pm
Hi Joe, Vincent A variation; I've had the same problem with bow windows: construct two perpendiculars to parts of the curve near either end. Its the same...
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J Vincent Beall
vincebeall
Oct 24, 2003 9:20 pm
Hi Mike, Joe Mike's method is correct and will work well if the arc itself is available and you can do the necessary drawing with compass and straight edge....
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Edward Moore
emoore06905
Oct 24, 2003 11:06 pm
If you can guarantee that the curve is circular, there is a formula that will allow you to take just the distance between the ends (x) and the height (y)....
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J Vincent Beall
vincebeall
Oct 25, 2003 3:00 am
Hi Ed I am unable to get a sensible result from your formula. Are you sure that (x^2/4)= (y *(2r-y))is the correct statement? But, your post did cause me to...
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toadboyjoe
Oct 25, 2003 7:08 am
Groovy. I remember the compass, angle bisecting stuff from school now, hehe. -Joe...
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Edward Moore
emoore06905
Oct 25, 2003 10:48 am
The formula is right - are you using the right values for x and y? x is the whole, straight-line distance between the ends ot the curve, and y is the distnace...
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J Vincent Beall
vincebeall
Oct 25, 2003 3:11 pm
... From: Edward Moore To: Polytopia@yahoogroups.com Sent: Saturday, October 25, 2003 6:48 AM Subject: Re: [Polytopia] Re: Question about circles........ ;-) ...
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J Vincent Beall
vincebeall
Oct 25, 2003 3:39 pm
I have reduced the algebra in the method I gave and come up with this: R = ( X^2 + Y ) / 2 Vince ... From: J Vincent Beall To: Polytopia@yahoogroups.com Sent:...
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Edward Moore
emoore06905
Oct 25, 2003 3:47 pm
Draw a circle, a diameter crossing the circle at points A and B, and a perpendicular bisector to the diameter that cuts through the circle at points C and D....
