Thus in every section of the cone the image is present in its totality - even in the very apex of the cone. There, too, the image in all its details is present as a whole, though without (ideally) any spatial extension. Seen thus, on this level of its action the light-ether reveals as one of its characteristics the faculty of making present in a spaceless point an image originally expanded in space, and of letting it emerge from this point in spatial expansion.