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FRACTALS

机译:分形

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摘要

How long is a country's border? That's the seemingly simple question mathematician Lewis Fry Richardson asked himself more than 75 years ago.The thing that puzzled him was that the length of the measuring stick mattered. Let's use Great Britain as an example: Use a 100-mile ruler, and you get one answer for total coastline. But if you reduce that ruler to a mile, it will fit inside bays the larger ruler missed, and the answer will be far larger. An inch-long ruler will give a still-larger result.Indeed, Richardson realized, the answer depended entirely on the length of the measuring stick. The shorter it is, the longer the measurement. Taken to its conclusion, the answer was striking: The coastline of Britain is infinite.He didn't know it, but Richardson had just stumbled on a previously unrecognized type of geometric object, one that was destined to revolutionize traditional mathematics. He'd found a fractal.
机译:一个国家的边界​​多长时间?那是75年前数学家刘易斯·弗莱·理查森(Lewis Fry Richardson)问自己的简单问题。 r n令他困惑的是,量尺的长度很重要。让我们以英国为例:使用100英里长的标尺,您会得到一个总海岸线的答案。但是,如果将标尺减小一英里,它将适合错过的较大标尺的海湾,其答案将更大。一英寸长的直尺会给出更大的结果。 r n理查森意识到,的确,答案完全取决于量尺的长度。时间越短,测量时间就越长。得出结论,答案是惊人的:英国的海岸线是无限的。 r n他不知道,但理查森只是偶然发现了一种以前无法识别的几何对象,注定要对传统数学进行革命。他发现了一个分形。

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  • 来源
    《Discover》 |2018年第6期|72-75|共4页
  • 作者

    JULIE REHMEYER;

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