A Shoshone camus root gathering
basket (ISU museum). Note the beautiful twist of the vertical willow reeds.
|We can model the twisting vertical reeds in the camus basket as a three-dimensional spiral. Sprial symmetry is an important concept in many Native American knowledge systems. A two-dimensional spiral can be modeled in polar coordinates: Here we set the distance from the center, radius r, equal to the angle (theta) of the radius: r = theta. As the angle sweeps around the plot, the radius moves farther from the center.|
|Now to make a three-dimensional
spiral, or "helix." Here are some examples turning along a length measured
Imagine the vertical length is time, and the turns are turns of the seasons. What would the events in your life look like if you plotted them along a helix?
we can try our hand at simulating the basket. Go to the simulation window
and experiment with the following parameters: depth, width, twist,
lines across width (n), lines across length (m).
The twist factor is the number of turns along the length of the basket.