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Light trajectory in geometrical optics and metric optics |
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| Authors: | Shitong Zhu Wenda Shen |
| Affiliation: | (1) Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800 Shanghai, China;(2) Department of Physics, Shanghai University, 201800 Shanghai, China |
| Abstract: | |
| Keywords: | light trajectory geometrical optics metric optics Fermat’ s principle null geodesic |
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