| 110 | 111 | 112 | 113 | 114 |
| 1 | 306 | 613 | 919 | 1225 |
|
1
26.
HOW THERE ARE 2 KINDS OF LIGHT, ONE SEPARABLE FROM, AND THE
OTHER
INSEPARABLE FROM BODIES.
Of the various kinds of light (126, 127).
Separate light is that which falls upon the body. Inseparable light
is the side of the body that is illuminated by that light. One is
called primary, the other derived. And, in the same way there are
two kinds of shadow:--One primary and the other derived. The primary
is that which is inseparable from the body, the derived is that
which proceeds from the body conveying to the surface of the wall
the form of the body causing it.
1
27.
How there are 2 different kinds of light; one being called diffused,
the other restricted. The diffused is that which freely illuminates
objects. The restricted is that which being admitted through an
opening or window illuminates them on that side only.
[Footnote: At the spot marked A in the first diagram Leonardo
wrote lume costretto (restricted light). At the spot B on the
second diagram he wrote lume libero (diffused light).]
112
Page
Quick Jump
|