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When light strikes a shiny surface, much of it is reflected in the direction shown.However some of it may be scattered on either side of the reflected light.If the intensity (brightness) of the scattered light at the angle (shown in the picture) is I, the Phong model says that where k and n are positive constants depending on the surface.Thus this function gives an idea of how "spread-out" the scattered light is.What effect does decreasing the parameter n have of the graph of I?
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