| 椭球投影定理 |
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| 引用本文： | 陈建. 椭球投影定理[J]. 天津大学学报(自然科学与工程技术版), 1988, 0(4) |
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| 作者姓名： | 陈建 |
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| 作者单位： | 天津大学机械制造工程系 |
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| 摘 要： | 阳光照射在球面上,地面上就会出现一个椭圆的影子。本文从数学的角度研究了这种现象,并把这种研究同轴测投影的基本定理联系起来。本文的题目反映了研究结果,所得到的复数公式D~2+E~2+F~2=C~2表明了轴测投影的基本定理——波尔凯定理和高斯定理之间的代数联系。
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A THEOREM OF PARALLEL PROJECTION |
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| Chen Jian. A THEOREM OF PARALLEL PROJECTION[J]. Journal of Tianjin University(Science and Technology), 1988, 0(4) |
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| Authors: | Chen Jian |
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| Affiliation: | Department of Mechanical Engineering |
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| Abstract: | When the sun casts its light on a sphere or an ellipsoid, an ellipse will appear on the ground. This is a common observation, but how to study this mathematically, and what relationship is between the ellipsoid and the ellipse ramain unnoticed and unsolved.Answers to these questions are given in this paper, |
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| Keywords: | sphere ellipsoid ellipse |
| 本文献已被 CNKI 等数据库收录！ |
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