|
I say that if the front part of a building, or any open space, illuminated by the sun has a building in front of it, and that if in the building that is not illuminated by the sun we make a small and round hole, all the objects illuminated will project their images through that hole, and they will be visible inside the building, on the opposite wall, that must be white, and there they will appear inverted; and if you make similar holes in different places of the same wall, you will get identical results in each case. From this, we can say that the images of the illuminated objects are all over the wall and all of them are in every small part of it. The reason is that this hole must admit some light in the mentioned building, and the light admitted by that building derives from one or a lot of luminous bodies. If they have colours and shapes, the rays that form the images are from various colours and shapes, as it will also be the images on the wall.
|