origami – the art and science of paper folding · famous origamist – hojyo takashi 北條高史...
TRANSCRIPT
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Origami – the ART and SCIENCE of paper folding
Dennis Li
2018
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Geometry behind cutting a pentagon
3
1
1 3 -X
1 + X = ( 3 – X ) X = 4 / 3 3 – X = 5 / 3 tan Ɵ = 0.75 Ɵ = 36.87 degree (close enough)
2 2 2
X
In a pentagon, angle Ɵ = 36 degree
Ɵ
Question : How can someone come up with this ingenious solution
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Origami History
蔡倫造紙 63 – 121
Japanese painting – 1797
There are many famous
Origami artists from Japan
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Origami Development
• First generation teaching is one on one and step by step
• 吉澤 章 Akira Yoshizawa 1911 – 2005 developed a standard convention in paper folding (mountain fold, valley fold, open sink, close sink, spread sink, inside reverse fold, outside reverse fold…etc) which allows paper models to be documented and folded by many
• In the 21st century, use of mathematics and computers speed up the theory and practice of origami
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Robert Lang
• He pioneered the – subject – stick figure – crease pattern – base model – formation approach
Crease pattern
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Another Example - Tarantula
Subject 8 Legs 2 Appendages 2 Mouth Pieces Upper body Lower body
Stick Figure Collapsed Base Form
Upper Body
Lower Body
Mouth Pieces
Appendages
Leg 1 Leg 2
Leg 3
Leg 4
Leg 5 Leg 6
Leg 7
Leg 8
Finished Art Work Crease Pattern
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Another Example – Fiddler Crab Subject 8 Legs 1 Large Craw 1 Small Craw 2 Eyes Body
Stick Figure Collapsed Base Form Finished Art Work Crease Pattern
Big Claw
Small Claw
Legs Legs Body
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How I become addicted to Origami
• In July 2015, while surfing the internet, I saw the following (UNBELIEVABLE!) Ryujin龍神 3.5
神谷哲史 Satoshi Kamiya
Crease pattern of Ryujin龍神 3.5
from a single sheet of square paper
with a 96 X 96 grid
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Fiery Dragon – Kade Chan (Hong Kong)
• I folded my first dragon model (fiery dragon by Kade Chan)
• My daughter shared it in Facebook and received a few likes
• I am in a path of no return
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Where is the Science part of Origami?
• Miura Fold – applications in folding maps, solar panel and strengthening material
https://www.youtube.com/watch?v=mPpKjD2e8O8&t=56s
Miura folding stress test (youtube)
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Origami in Space: BYU designed solar arrays
Minimum volume (payload restriction) and Maximum area and easy to unfold
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Origami magic ball (water bomb construction)
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Water Bomb Origami – a Life Saving Device
• Kaori Kuribayashi-Shigetomi Folding the future with Origami
• Stent – small core can expand in size to unblock blood vessel
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Another Life Saving Device - Airbag
Using origami simulation – can save a lot of time, effort and money
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Famous Origamist – Dinh Giang
• Simple and Artistic
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Famous Origamist – Satoshi Kamiya
• Complex, Realistic and Elegant – 神谷折紙入門三寶 Ancient Dragon Bahamut Phoenix
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Famous Origamist – Eric Joisel
• Artistic Sculpture
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Famous Origamist - Joel Cooper Tessellations Origami • Different approach to folding a subject
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Famous Origamist - Hideo Komatsu 小松英夫 • Simple and Practical
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Famous Origamist – Hojyo Takashi 北條高史
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Other Geometric Origami Models
Double star flexicube Kusudama coral star 5 intersecting tetrahedra
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Origami Practices
Dollar Koi Fish Rose Crane Fujimoto World Cube
Thank you and have fun!
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Origami Resources
• www.origamihouse.jp (Japan Origami Society)
• https://origamiusa.org/ (US Origami Society)
• www.folders.jp (Satoshi Kamiya)
• www.langorigami.com (Robert Lang)
• http://web.mit.edu/chosetec/www/origami/ (Brian Chan)
• http://jasonku.mit.edu/ (Jason Ku)
• https://www.kadechan.com/ (Kade Chan)
• www.origami-shop.com (Premium Origami Paper and Books)
• https://1986688.world.taobao.com/ (心有紙艺 Origami Paper and Tools and Crease Patterns)