Catastrophe machine - Catastrophe machine

Japanese: カタストロフィー機械 - かたすとろふぃーきかい
Catastrophe machine - Catastrophe machine

…Since the 1970s, EC Zeeman of England has applied Tom's ideas to various phenomena, and has become a pioneer of catastrophe theory alongside Tom. Catastrophe phenomena can be experimented with using the following system called Zeeman's catastrophe machine. Take two rubber bands, and when they are folded into a line segment without stretching them, their length is 1. As shown in Figure 1, a disk (made of cardboard) with a radius of 1 is fixed to a plane so that it can rotate freely around point A. Small holes are drilled on the circumference of this disk to fix one end of each of the two rubber bands. The other end of one of the rubber bands is attached to a thumb tack fixed to point B in the figure, and the other end P of the other rubber band is moved freely on the plane by hand. …

*Some of the terminology explanations that refer to "catastrophe machines" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…70年代よりイギリスのジーマンE.C.Zeemanは,トムのアイデアをいろいろな現象に応用し,トムと並びカタストロフィー理論の開拓者となっている。 カタストロフィー現象は,次のジーマンのカタストロフィー機械と呼ばれるシステムによって実験することができる。ゴムバンドを2個とり,これを伸ばさずに線分状にたたんだときの長さを1として,図1のように半径1の円板(ボール紙で作る)を点Aを中心として自由に回転できるように平面に固定し,この円周上に小穴をあけて二つのゴムバンドのそれぞれの一端を固定し,その一つのゴムバンドの他端を図の点Bに固定した画鋲にかけ,他のゴムバンドの他端Pを手でもって平面上を自由に動かす。…

※「カタストロフィー機械」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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