JasonChin writes:
quote:
But Phi appears far more often than these numbers
No, it doesn't. It certainly doesn't appear more often than pi or e.
Quick question: Suppose you have a bunch of parallel, straight lines, each one unit apart. You have a bunch of toothpicks, each one unit long. You drop them onto the lines. What are the odds that the pick will cross a line?
That's right...pi/4.
Now think about it...why might pi have something to do with this?
quote:
and always in the same context, I.E. proportions.
Let me see if I understand this correctly: You're amazed that a number that is calculated from proportions tends to pop up when dealing with proportions?
That's like being amazed that pi comes up when talking about circles (that's a big hint to my question above.)
The golden ratio can be approximated by dividing the n+1th and nth terms of the Fibonacci series as n goes to infinity.
Now, the Fibonacci series comes up a lot in nature simply due to its intrinsic physical qualities: Add the previous two. That's a very simple thing to do biologically. Want to visualize a Nautilus shell? You can make it with a Fibonacci series:
Start with two 1x1 squares side by side. You thus have a 2x1 rectangle. To add another square to the long edge, you need a square that is the sum of the two previous ones: 2x2. Well, now you have a 2x3 rectangle. To add another square to the long edge, you need a square that is the sum of the two previous ones, 3x3. Well, now you have a 3x5 rectangle. As you keep spiraling around and around, you're adding squares that follow the Fibonacci series. And if you draw a quarter circle in each square so that the pathway lines up, that's the spiral of the Nautilus shell.
But notice what you did: You calculated the golden ratio simply by adding squares together in a spiral pattern, each one the size of the big side of what you had before.
There is nothing mysterious about this. It's a simple necessity of mathematics. There's no other way it could be.
Rrhain
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