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Sunday, August 28, 2011


What an awesome field of study this would be.  This is the most famous of fractals, the Mandelbrot set, under magnification of 250,000,000x. 


So, naturalists observe, a flea
Has smaller fleas that on him prey;
And these have smaller still to bite 'em,
And so proceed ad infinitum.
—Jonathan Swift, from "On Poetry: A Rhapsody"

The satirist and author of Gulliver's Travels might have been talking about fractals when he made this oft-quoted observation—if he hadn't lived two centuries before fractals were discovered. (In fact, Swift was complaining about lesser poets criticizing better ones, like pestering fleas.) As it happens, these four lines can serve as a perfect metaphor for the infinitely detailed, "self-similar" nature of fractals. In this interactive, zoom deep into a Mandelbrot set, the most famous of fractals, to the mind-bending magnification of 250,000,000x. Along the way, you'll see what is meant by self-similarity, how the iconic Mandelbrot-set shape keeps turning up at smaller scales like one of Swift's ever-tinier fleas, and why the 18th-century wit's metaphor suits fractals to a tee.

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