| 197 | 198 | 199 | 200 | 201 |
| 1 | 306 | 613 | 919 | 1225 |
|
The surface of every opaque body assumes the hues reflected from
surrounding objects.
The surface of an opaque body assumes the hues of surrounding
objects more strongly in proportion as the rays that form the images
of those objects strike the surface at more equal angles.
And the surface of an opaque body assumes a stronger hue from the
surrounding objects in proportion as that surface is whiter and the
colour of the object brighter or more highly illuminated.
2
70.
OF THE RAYS WHICH CONVEY THROUGH THE AIR THE IMAGES OF OBJECTS.
All the minutest parts of the image intersect each other without
interfering with each other. To prove this let r be one of the
sides of the hole, opposite to which let s be the eye which sees
the lower end o of the line n o. The other extremity cannot
transmit its image to the eye s as it has to strike the end r
and it is the same with regard to m at the middle of the line. The
case is the same with the upper extremity n and the eye u. And
if the end n is red the eye u on that side of the holes will not
see the green colour of o, but only the red of n according to
the 7th of this where it is said: Every form projects images from
itself by the shortest line, which necessarily is a straight line,
199
Page
Quick Jump
|