« 教学的艺术六一快乐! »

Lorenz Butterfly

The Lorenz butterfly is significant becasue it illustrates the concept of "sensitive dependence upon initial conditions."

In the 1960's the American meteorologist Edward Lorenz (NOT Lorentz!) discovered, more or less by chance, that the mathematical models for the weather system were extremely sensitive to the initial conditions.
Small changes in these initial conditions result in big effects. Of course this had long been known as "popular wisdom"...:-), but now it was shown that this deterministic chaos was a result of the non-linearity of the underlying differential equations. As a result long-term weather predictions are impossible.

In 1972 he presented a talk with the title:
Predictability: Does the Flap of a Butterfly’s Wings in Brazil set off a Tornado in Texas?

This butterfly image has become a very popular one and you can find it in almost any of the hundreds of Internet sites about Chaos Theory.

  • 相关文章:

发表评论:

◎欢迎参与讨论,请在这里发表您的看法、交流您的观点。

关于我们

日历

最新评论

最近发表

Powered By Z-Blog 1.7 Laputa Build 70216

Copyright 2003-2011 来春闲话 eshao.being.org.cn Some Rights Reserved.