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@ -310,7 +310,7 @@ Fig. 14. |
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* **Emerging ray** (or its extension) = *straight line between impact point and B'*. |
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* **Emerging ray** (or its extension) = *straight line between impact point and B'*. |
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<br> |
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<br> |
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Fig. 15. |
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Fig. 15. |
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