| 对阿基米德设想的探讨 |
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| 引用本文： | 闫继红. 对阿基米德设想的探讨[J]. 安徽建筑工业学院学报, 1996, 0(3) |
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| 作者姓名： | 闫继红 |
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| 作者单位： | 合肥联合大学!230022 |
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| 摘 要： | 运用光学中几何光学和光度学的理论,对阿基米德的设想进行了分析。首先得出了像的亮度与物的亮度的关系,进而导出像的照度与物的亮度的关系。利用此关系,并基于太阳亮度、透镜孔径和敌船位置可能的取值,从而得出结论,像的照度不足以烧毁敌船,该设想不能实现。
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| 关 键 词： | 阿基米德设想 光阑 照度 光通量 入射光瞳 余弦辐射体 亥姆霍兹定理 入射孔径角 |
AN INQUISITION ABOUT ARCHIMEDES' ASSUMPTION |
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| Yan Jihong. AN INQUISITION ABOUT ARCHIMEDES' ASSUMPTION[J]. Journal of Anhui Institute of Architecture(Natural Science), 1996, 0(3) |
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| Authors: | Yan Jihong |
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| Abstract: | :Optical theory is used to go deeply into Archimedes' assumption in this thesis. First, it is obtained that relations between brightness of image and of object, and then a conclusion is reached that relations between illuminance of image and brightness of object. On these grounds, it is made that a penetrating analysis of Archimedes' assumption. On the basis of brightness of sun, foeal distance and aperture of lens, and position of a enemy ship, thus a inference is concluded that the illuminance of image is mot enough to burn up a ship of enemy. Therefore, the assupption is unreal, or proved wrong. |
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| Keywords: | : Archimedes' assumption stops illuminance luminous flux entrancepupil cosine radiating body Helmholtz's theorem aperture angle of incidence |
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