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* [http://www.instructables.com/id/Make-a-Kumihimo-Disk-Out-of-a-CD/ How to make a Kumihimo Disk out of a CD] (braiding) | * [http://www.instructables.com/id/Make-a-Kumihimo-Disk-Out-of-a-CD/ How to make a Kumihimo Disk out of a CD] (braiding) | ||
== Knots and Splices == | == Knots and Splices == | ||
=== | === Knot History === | ||
* various knot books online and offline | |||
* We learned how ropes are made in a "Seilerei" on the "Reeperbahn" | |||
* We learned about a rope inspection machine, that travels along a the cable of a "Seilbahn" | |||
=== Knot Theory === | === Knot Theory === | ||
... | * We learned the basics of knot theory | ||
* Minimum number of crossings | |||
* Knot-Invariants and Knot-Polynomials | |||
=== Knot Classification Game === | |||
We played a knot identification game.<br> | |||
It goes like this:<br> | |||
* Student A creates two knots using thread. | |||
* Student B tries to figure out whether or not the two knots are the same | |||
=== Homework === | |||
Create a nice framework for displaying knots.<br> | |||
The framework can be physical, graphical or computational in nature | |||
=== Links === | === Links === | ||
==== How are threads made? ==== | ==== How are threads made? ==== | ||
Revision as of 10:33, 3 May 2016
Computing with Thread: Part I
Thread Geometry
We explored what kind of geometric constructions we can do with thread, chalk and the help of several people...
We found out...
- how to draw a line
- how to draw a circle ( d = const.)
- how to draw an ellipse ( a + b = const.)
- how to draw multifocal ellipses (a + b + c = const.)
- how to draw egg-shaped curves (3 * a + b = const.)
- how to measure the circumference of a circle
- how to calcualte pi using only thread (See also here)
3D thread geometry
We explored how our thread-based drawing tools could be used to identify points on the surface of shapes in 3 dimensions.
- We discovered the 3d ellipsoid (a + b = const.)
- We found that multifocal 3d ellipsoids have a doughnut-topology.
- We found two different ways to create ellipsoid shapes:
- the polygon method, where the thread forms a polygon going through the focal points and the drawing point
- the star method where the thread is alternately visiting each focal point and the drawing point
Observations
- Geometric knowledge from school only got us so far ...
- There is a whole universe of "new" shapes and forms
Questions raised
- Questions regarding surface of different shapes popped up
- We discussed different methods of measuring the surfaces using thread
Homework
- What could an Experimentier-Baukasten / a kit / a sandbox for computing with thread look like?
Do some research on other kinds of kits! - Do some thread-based geometry at home. Pick a parameter such as the thread-length and vary it systematically
- Document your thread-art in the wiki
Links
Geometry
Some links to classics of compass + straightedge geometry
as well as the thread-based geometry we explored in our class.
Lines
- Tim Ingold: Lines: a brief history, ISBN 978-0415424271 (hint: google it)
- Kandisky: Punkt und Linie zu Fläche
Ellipses
- Ellipse on Wikipedia
- Multifocal oval curves on Wikipedia
- On the description of oval curves by James Clerk Maxwell
- Semidefinite Representation of the k-Ellipse
Compass and Straightedge
- Compass and straightedge construction on Wikipedia
- Byrne's version of Euclid's elements using coloured shapes (very bauhaus)
- 3D Sculptures by Helen Friel
Kitspiration
Here are some links to all kinds of kits.
May they serve as inspiration for creating your own textile computing kits.
Educational Kits
- Anker-Steinbaukasten
- LECTRON Elektrobaukasten
- LEGO, KNEX, LEGO-Mindstorms ...
Sewing Boxes
- Sewing Box with Implements
- Sewing Box Cabinet by Kiki van Eijk
Tool Boxes
- Survival Kit
- Dentist Toolkit
- Pictures of surgical sets and tool boxes
Portable Textile tools
- The Charkha (spinning)
- Hexagonal Weaving loom (hexagonal weaving)
- Tablet Weaving (weaving/braiding)
- How to make a Kumihimo Disk out of a CD (braiding)
Knots and Splices
Knot History
- various knot books online and offline
- We learned how ropes are made in a "Seilerei" on the "Reeperbahn"
- We learned about a rope inspection machine, that travels along a the cable of a "Seilbahn"
Knot Theory
- We learned the basics of knot theory
- Minimum number of crossings
- Knot-Invariants and Knot-Polynomials
Knot Classification Game
We played a knot identification game.
It goes like this:
- Student A creates two knots using thread.
- Student B tries to figure out whether or not the two knots are the same
Homework
Create a nice framework for displaying knots.
The framework can be physical, graphical or computational in nature
Links
How are threads made?
Thread Games
Self-Assembly
- Teslaphoresis (self-assembly of threads)
- Spontaneous Patterns in vibrated Ball Chains: Knots and Spirals
Knotting
- History and Science of Knots
- Animated Online Encyclopedia of Knots
- Encylopedia of Knots and Fancy Rope Work ISBN 978-0870330216
Unknotting with Force and Magic
- Gordian Knot (mythology)
- Harry Houdini (magician)
- Abbot's encylopedia of rope tricks for Magicians ISBN 978-0486232065
- Self-Working Rope Magic: 70 Foolproof Tricks ISBN 978-0486265414
- Seil-Salabim
Splicing
- Splicing Animated.
Knot Theory
- Knot Theory Videos by Numberphile
- How Mathematics gets into Knots
- Alexei Sossinsky, Mathematik der Knoten: Wie eine Theorie entsteht ISBN 978-3499609305
- The Knot Atlas
- Historic Knot Tables
Tie Knotting
Bondage
- Hojōjutsu japanese martial arts technique
- Shibari arte documentary on japanese bondage
- Go get knotted a blog to learn bondage knots
- Enchanted Forest photo series by Garth Knight