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On the shape of the cast shadows (188-191). A spot is most illuminated when a
large number ofluminous rays fall upon it. And the larger the light object
opposite, themore the shadow will be lightened. On the relative intensity of
derived shadows (175-179).
Whether it is possible to give clear and definite
outlines to theedges of shadows. Why is the shadow _e a b_ in the first grade
of strength, _b c_ inthe second; _c d_ in the third? On the relative intensity
of derived shadows (175-179).
in having _distante_ in the former and_propinque_
in the latter place. A shadow looks darkest against a light background.
The
space left for the purpose hasoccasionally been made use of for quite different
matter.
And thepyramid _g_ 4 goes into _l y_ exactly as often as _a b_ goes
into _ef_.
_b c_ faces the portion of thesky _f g_ and is illuminated by it. At
_c e_ thatpart of the window which is between _l b_ cannot be seen.
Objects
near to the eye will appear larger than those at a distance. The effect of
light at different distances.
At _c e_ thatpart of the window which is between
_l b_ cannot be seen.
In the reproduction of this diagram theletter _v_ at the
outer right-hand end has been omitted.
WHY A SHADOW WHICH IS LARGER THAN THE
BODY CAUSING IT HASILL-DEFINED OUTLINES.
the larger diagram is placed above the
firstline; the smaller one between l.
A spot is most in the shade when a large
number of darkened raysfall upon it.
To theleft is the facsimile of the
beginning of the text belonging to it.
If the eye remains stationary the
perspective terminates in thedistance in a point.
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