THE BEADED MOLECULES
串珠分子模型的美妙世界
Wednesday, September 26, 2012
Animated dodecahedral beaded structure by Horibe-San
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Mr. Horibe (Horibe-San) just informed me a beautiful beaded structure he made with a single string! The address is here: http://horibe.jp/JP...
Saturday, September 22, 2012
Two pictures of C20 Sangaku problem
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I wrote a simple matlab script to generate the 3D structure of the C20 Sangaku problem. The first one is viewed from a 3-fold rotational axi...
Friday, September 21, 2012
Ancient proof of R/r=sqrt{5}
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In the Meiji era, mathematicians of Japan didn't use trigonometry to prove R/r=sqrt{5} for the problem about a big ball covered by 30 sm...
Tuesday, September 18, 2012
Some photos from the 3rd International workshop between College of Science, National Taiwan University and Faculty of Science, Okayama University
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Early this month, I gave another workshop for the 3rd International workshop between College of Science, National Taiwan University and Facu...
Monday, September 17, 2012
One more picture of super buckyball
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Wednesday, September 12, 2012
Proof of R/r=sqrt{5} for the geometry of bead C
20
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Even though the original drawing for this particular sangaku problem is done by the black-and-white style, it may not be a bad idea to...
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