Not for the faint of art. |
Complex Numbers A complex number is expressed in the standard form a + bi, where a and b are real numbers and i is defined by i^2 = -1 (that is, i is the square root of -1). For example, 3 + 2i is a complex number. The bi term is often referred to as an imaginary number (though this may be misleading, as it is no more "imaginary" than the symbolic abstractions we know as the "real" numbers). Thus, every complex number has a real part, a, and an imaginary part, bi. Complex numbers are often represented on a graph known as the "complex plane," where the horizontal axis represents the infinity of real numbers, and the vertical axis represents the infinity of imaginary numbers. Thus, each complex number has a unique representation on the complex plane: some closer to real; others, more imaginary. If a = b, the number is equal parts real and imaginary. Very simple transformations applied to numbers in the complex plane can lead to fractal structures of enormous intricacy and astonishing beauty. |
Here's another one for "Journalistic Intentions" [18+] Running Stitches My running days are long behind me. I'm a safe bet to take on a hike now, because of bears. If you encounter a bear, you don't need to run faster than the bear; you just need to run faster than your hiking buddy. This is, of course, one reason I avoid going *shudder* outside. Not that I was ever great at running, anyway. I used to have some stamina, at least, but speed? Forget it. Short legs and lack of competitive instinct. I might have been okay at running a marathon, though I'd never have finished first, unless I was the only one running it. Those times when I did try to run fast, for whatever reason, it never failed that I developed a stitch in my side. I've never been really clear about why they call that particular stabbing pain a "stitch." It's a pang, a twinge, a spasm. The only other time I can think of when "stitch" is related to one's body is when there's a cut deep enough that they sew the edges of the wound together with stitches. As I have never had those kind of stitches, except in my eyeball, I can't compare the pain. Eyeball stitches are no fun, though. I suspect the word is used for running-related pain because the Germanic root means something like sting, or prick. Not that kind of prick; the kind a needle does. For a long time, smart people who study these things weren't sure what caused a running stitch. Apparently, these days, it's technically called an exercise-related transient abdominal pain (ETAP). I like to think they were trying to make a pun, because the French word for step is étape. In any case, that link attempts to explain its cause, though apparently, there's still some debate on the topic. I say its cause is exercise. You can avoid it by not exercising. Because English is weird, "running stitch" also describes the most basic embroidery technique, but I don't know much about that, so I chose to rag on exercise instead. |