Search found 80 matches

by Edwin Corrie
Tue Dec 13, 2011 7:22 pm
Forum: Napkin folding
Topic: Vollständiges und von neuem vermehrtes Trincir-Buch - online
Replies: 0
Views: 2702

Vollständiges und von neuem vermehrtes Trincir-Buch - online

I suspect this will be already known to some, but for those who haven't seen it here is an online copy of the famous "Vollständiges und von neuem vermehrtes Trincir-Buch" by Georg Philipp Harsdörffer (1657): http://www.slub-dresden.de/sammlungen/digitale-sammlungen/werkansicht/cache.off?tx_dlf[id]=1...
by Edwin Corrie
Sun Dec 11, 2011 9:07 pm
Forum: Mathematics
Topic: Simple proofs?
Replies: 6
Views: 5181

Re: Simple proofs?

To show that the internal angles of a triangle always add up to 180°, take a triangle and fold two opposite corners to meet each other, then fold the last corner in. The three corners will meet and form an angle of 180°. I first saw this in an old BOS magazine, but it's probably in books on geometri...
by Edwin Corrie
Sat Dec 10, 2011 11:41 pm
Forum: Forum rules - please read!
Topic: How to post Word documents
Replies: 4
Views: 6604

Re: How to post Word documents

Ah, right, I don't know why I didn't see that. Sorry to be a pain, but can you recommend a site for converting Word to PDF? There seem to be lots of sites that will do it for free, but you know what I'm like and a recommendation would be nice. For example, how about this: http://www.freepdfconvert.c...
by Edwin Corrie
Fri Dec 09, 2011 3:49 pm
Forum: Forum rules - please read!
Topic: How to post Word documents
Replies: 4
Views: 6604

How to post Word documents

Just wondering if there was a way to post Word documents on the forum. I have various bits of material that might be of interest (e.g. extracts from old books), but often they include images of the original pages which I don't think I can post in a normal message. Or perhaps something like Google Do...
by Edwin Corrie
Fri Dec 09, 2011 12:20 am
Forum: Books
Topic: origami books that include a bibliography
Replies: 16
Views: 13348

Re: origami books that include a bibliography

Quite right, it actually says "A revision of Fun with Paper Folding". It was getting late when I posted that and I assumed it was just the old Dover book that we all know. Interesting article of yours Nick - I wasn't aware of the book's history.
by Edwin Corrie
Thu Dec 08, 2011 12:49 am
Forum: Books
Topic: origami books that include a bibliography
Replies: 16
Views: 13348

Re: origami books that include a bibliography

Hi Joan, I have the 3rd edition (1963). The extra pages list books published between 1957 and 1962, but only a couple relate to paperfolding. They are: "Paper Folding for Fun" (Murray & Rigney) "Origami: Japanese Paperfolding" (Florence Sakade) "Paper Folding for the Mathematics Class" (Donovan John...
by Edwin Corrie
Thu Dec 08, 2011 12:31 am
Forum: Books
Topic: Independent Study: books, plans, methods
Replies: 4
Views: 5273

Re: Independent Study: books, plans, methods

Not sure it's exactly what you're after, but Kasahara's "Creative Origami" (first published in 1967, softback reprint 1977) has a nice section at the end on how to design your own models. Quite unusual for a book that old. It's on Amazon.com with the "look inside" view showing the table of contents,...
by Edwin Corrie
Wed Dec 07, 2011 6:23 pm
Forum: Coffee lounge
Topic: multilingual forum
Replies: 6
Views: 4903

Re: multilingual forum

Many forums seem to have an "English only" rule, but obviously it's easier to express yourself in your own language, and I agree with Joan that if we're discussing old texts written in other languages it's important to have the original text. People can then discuss the accuracy of the translation t...
by Edwin Corrie
Wed Dec 07, 2011 6:13 pm
Forum: Books
Topic: origami books that include a bibliography
Replies: 16
Views: 13348

Re: origami books that include a bibliography

There's an interesting bibliography of paperfolding books in "Recreational Mathematics: A Guide to the Literature", available here: http://babel.hathitrust.org/cgi/pt?id=uc1.b4248658 The paperfolding section starts on page 76. The book is available quite cheaply from Amazon and other secondhand book...
by Edwin Corrie
Tue Dec 06, 2011 3:59 pm
Forum: Coffee lounge
Topic: Introduce yourselves!
Replies: 12
Views: 8637

Re: Introduce yourselves!

Hi there, I haven't been able to participate actively in origami for a while but still maintain a strong interest and try to follow a bit of what is going on. My other main hobby is magic/conjuring, and a recent area of interest has been early magic literature going right back to the 15th and 16th c...