[Origami] Origami-related talk this afternoon.

2021-10-20 Thread Neil Calkin
The Gathering for Gardner is happening virtually this week, and this afternoon Rachel Quinlan is giving a talk that may be of interest to origami folks. Information, including her abstract and the zoom link, can be found at the G4G website:

Re: [Origami] looking for Helena Verrill

2015-05-10 Thread NEIL J CALKIN
There appears to be a mathematician of that name at the University of Warwick in the UK. http://www2.warwick.ac.uk/fac/sci/maths/people/staff/

Re: [Origami] Fujimoto star spring starting proportions

2014-02-05 Thread NEIL J CALKIN
On Wed, 2014-02-05 at 16:44 -0500, Ralph Jones wrote: When I read about someone having this sort of difficulty, I want to remind about using a grid of evenly (equally) spaced lines. Align one edge of your paper from gridline zero, on one corner, to gridline N (odd integer N=eleven, in this

Re: [Origami] Diagrams in the web with black background?

2013-12-05 Thread calkin
On 12/05/2013 11:10 PM, Diana Lee wrote: Hi Gerardo, the diagrams with black background look nice and are easy on the eyes. However, if someone wanted to print out your diagrams, it would not be good because it uses too much ink. Maybe there is a way for you to make it look like the

Re: [Origami] 2 X 1 or 1 X 2 rectangle

2013-09-29 Thread calkin
On 09/29/2013 06:33 PM, Gerardo @neorigami.com wrote: I would like to know, when referring to the proportions of a rectangle is there a difference between saying 2 X 1 and 1 X 2? On this, I go with the mathematical convention for matrices: the first number denotes height (for matrices, number

Re: [Origami] Pentagon Question?

2013-03-15 Thread calkin
On 03/15/2013 10:54 AM, Gareth Chen wrote: On Mar 15, 2013 6:09 AM, sue neffneffsens...@comcast.net wrote: Dear Origami Friends, Has anybody seen an explanation for why folding a chop-sticks wrapper into an over-hand knot Makes a perfect pentagon I think this happens because

Re: [Origami] Local copies of Anita Barbour diagrams?

2012-12-12 Thread calkin
On 12/12/2012 11:45 PM, Anita Barbour wrote: Many thanks to Sara Adams and Diana Lee for recovering and posting my origami diagrams. Anita Barbour Many thanks to you, Anita, for allowing Sara and Diana to make these continue to be available, and for contributing these

Re: [Origami] File downloads update in The Origami Source

2012-10-09 Thread calkin
The musical score analogy is interesting, but that's already the way it *could* work (and sometimes does): using a diagram one has purchased to make money could, as many advocate here, be subject to payment for those performance rights as one does with musical scores. That is: if one accepts