Here we see an artichoke spinning while being videotaped at 24 frames-per-second with a very fast shutter speed (1/4000 sec). The rotation speed is chosen to cause the artichoke to rotate 137.5º—the golden angle—each time a frame is captured, thus creating the illusion that the leaves are moving up or down the surface of the artichoke. The reason this works is that the artichoke grows by producing new leaf one at a time, with each new leaf positioned 137.5º around the center from the previous leaves. So, in a sense, this video reiterates the artichoke's growth process. (The movement is wobbly because the artichoke is not completely symmetrical.)
Nature uses this same growth pattern in a wide variety of plant forms, including pine cones, sunflowers, and many succulents. If you count the number of spirals on any of these plants you will find that they are always Fibonacci numbers.
I have created a unique type of sculpture I call a "bloom", which has the same golden-angle-based structure, and thus appears to come to life when rotated in the same manner. You can see examples of blooms here: vimeo.com/117674269, and learn more about how they are made here: http://instructables.com/id/Blooming-Zoetrope-Sculptures/
Camera & editing: Charlie Nordstrom