Volume Volume1\Light and Shade\Book2
Entry# 150. On the intensity of shadows as dependent on the distance from the light (150-152).
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The smaller the light that falls upon an object the more shadow it
will display. And the light will illuminate a smaller portion of the
object in proportion as it is nearer to it; and conversely, a larger
extent of it in proportion as it is farther off.
A light which is smaller than the object on which it falls will
light up a smaller extent of it in proportion as it is nearer to it,
and the converse, as it is farther from it. But when the light is
larger than the object illuminated it will light a larger extent of
the object in proportion as it is nearer and the converse when they
are farther apart.
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