Notebook

Notebook, 1993-

RELATIONSHIPS

Variable Tone Values
of Light and Shadow


Two ways of Comprehending Three-dimensional Amplitude:
In order to render mass, it is necessary to find a way to structure surface spread rather than to simply line in contour or edge. Thus, it is necessary to learn to shape and structure mass and volume through perception--Perception which results because our eyes primarily "read" surface rather than edge. In so doing they are assisted in comprehending three-dimensional amplitude in two ways.

1. By any linear relief or indentation formed by grooves or channels which follow surface flow--linear formations which move over the object delineating the curves and planes of the mass. As they run around and under the form, suggesting the presence of the other side, they increase our appreciation of the three-dimensional solidarity of the object.

2. By the variable tone values of light and shadow that move over and around the object and aid perception of mass in the same way . . . . for example, no lines help the eye--only the movement of light and dark tell of advancing and receding planes and curves, and thus bespeak the mass of the fragment of melted glass . . . . [pp. 127-133]

[Collier, Graham. Form, Space & Vision, An Introduction to Drawing and Design. Englewood Cliffs, New Jersey: Prentice-Hall, 1985.]





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