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Iris folding is a paper craft technique that involves folding strips of colored paper in such a way to form a design. The center of the design forms an iris —a shape reminiscent of the iris diaphragm of a camera lens .
This video is an example of how to create a page for the new and modern day scrapbooker. Marielen Wadley Christensen (pronounced as the names "Mary Ellen"), of Elk Ridge, Utah, United States (formerly of Spanish Fork, Utah) is credited with turning scrapbooking from what was once just the ages-old hobby into the actual industry containing businesses devoted specifically to the manufacturing ...
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The fold-and-cut theorem states that any shape with straight sides can be cut from a single (idealized) sheet of paper by folding it flat and making a single straight complete cut. [1] Such shapes include polygons, which may be concave, shapes with holes, and collections of such shapes (i.e. the regions need not be connected ).
The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, behind the stroma, pigmented epithelial cells.. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles (dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds.
The iris is a protected wildflower, [3] [19] and fortunately some populations of the iris can be found inside a couple of mine fields. In Keshet, Golan a settlement area was widened, and a population of the iris was trans-located, but after 3 years only 6 plants had survived out of 120 (meaning 5%).