The two images shown in Figure 3 below are both OpenGL scenes, which contain one plane and one spot light each. Explain the difference you see between the two images, why are they different? Figure 3: Lighting Explain how the Phong illumination model is extended in the global illumination ray-tracing algorithm to shade the box's surfaces. You may use a diagram to illustrate your answer.

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Normalization

Normalization is the process of eliminating redundancy in a database by organizing the data into several smaller tables. The large tables are normalized (converted) into smaller tables by using normalization rules, so that a database administrator can easily handle them. It also eliminates insertion, deletion, and update anomalies.