The degree of lightness and darkness of a material is called its

The answer to this question is value. The degree of lightness and darkness of a material is called its value. This is an important tool for designers / artists in a way to define forms and create fantasies of space. The value contrast separates the objects in space, and the gradation of values indicates the mass and contour of the continuous surface.

The astronaut at the bottom

Answer gutzon borglum was both a gifted painter and sculpture;