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them.
The law of the incidence of light.
1
46.
The edges of a window which are illuminated by 2 lights of equal
degrees of brightness will not reflect light of equal brightness
into the chamber within.
If b is a candle and a c our hemisphere both will illuminate the
edges of the window m n, but light b will only illuminate f
g and the hemisphere a will light all of d e.
1
47.
OF PAINTING.
That part of a body which receives the luminous rays at equal angles
will be in a higher light than any other part of it.
And the part which the luminous rays strike between less equal
angles will be less strongly illuminated.
SECOND BOOK ON LIGHT AND SHADE.
125
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