...It is used to calculate the area of curved figures or complex shapes that cannot be easily integrated with mathematical expressions. A representative example of a method that calculates the area mechanically by inputting the boundary of a figure is the planimeter, which is said to have been invented by Jakob Amsler-Laffon (1823-1912), and its structure is shown in Figure 1. The two arms AB and CD are in contact at C and can rotate horizontally around an axis. ... *Some of the terminology that mentions "planimeter" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…積分が容易な数式で記述され得ない曲線図形や複雑な形状の面積を求める場合に使われる。図形の境界を入力すると機械的手法で面積を算出する方式の代表例は,アムスラーJakob Amsler‐Laffon(1823‐1912)の考案とされるプラニメーターplanimeterで,その構造を図1に示す。2本の腕ABとCDとがCにおいて接し,軸のまわりに水平に回転できるようになっている。… ※「planimeter」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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