Cast shadows are seen when an object blocks the light, i.e. the cast shadow of a tree; the cast shadow from an arm crossing over the torso. Cast shadows generally have 3 gradating values (light to dark gray scale). The cast shadow is darkest near the object casting the shadow and become lighter as it moves away from the object. They usually have 3 edges; moving from hard to soft edges. A shadow becomes warmer as it moves away from the object. Cast shadows provide artists and viewers with information. The shadow shows the direction of the light source. It can tell us the time of day; cast shadows are shorter at noon. Cast shadows show us the shape of the object casting the shadow and the surface on which the shadow lies. Cast shadows are darker than the form shadow of the object. A cast shadow is lighter further away from parts of an object or object. The higher curved handle of a spoon has a lighter cast shadow at the point of the curve. (I have not discussed shadows created by translucent objects.)
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Wednesday, 9 September 2009
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