Catenoids

Japanese: カテノイド - かてのいど
Catenoids

...The shape of a power line or suspension bridge stretched between steel towers is roughly this shape. The surface that is created when a catenary is rotated around the x- axis is called a catenoid, or catenary surface. The only minimal surface that is a surface of revolution (a surface whose mean curvature is 0 at all points) is the catenary surface. ...

*Some of the terminology explanations that mention "catenoid" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…鉄塔の間に張られた送電線やつり橋の形状はほぼこの形である。カテナリーをx軸のまわりに回転したときできる曲面をカテノイドcatenoid,または懸垂面という。回転面である極小曲面(平均曲率がすべての点で0である曲面)は懸垂面だけである。…

※「カテノイド」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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