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Figure 9
(a) Schematic diagram for deducing Snell's law using Fermat's principle. (b) Three-dimensional schematic diagram of an interface that focuses a point source Q1 at an image point Q2. |
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Figure 9
(a) Schematic diagram for deducing Snell's law using Fermat's principle. (b) Three-dimensional schematic diagram of an interface that focuses a point source Q1 at an image point Q2. |