On the Ellipsoid and Plane Intersection Equation

• 作者: Peter Paul Klein
• 来源期刊: 应用数学(英文)
• 学科: 数学
• 关键词: ELLIPSOID and PLANE INTERSECTION IDENTITY of LAGRANGE GRASSMANN Expansion Theorem
• 年，卷（期）: 2012,（11）
• 页码范围: 1634-1640
• 页数: 7页
• 分类号: O1

摘要

It is well known that the line of intersection of an ellipsoid and a plane is an ellipse. In this note simple formulas for the semi-axes and the center of the ellipse are given, involving only the semi-axes of the ellipsoid, the componentes of the unit normal vector of the plane and the distance of the plane from the center of coordinates. This topic is relatively common to study, but, as indicated in [1], a closed form solution to the general problem is actually very difficult to derive. This is attemped here. As applications problems are treated, which were posed in the internet [1,2], pertaining to satellite orbits in space and to planning radio-therapy treatment of eyes.