The student examines the surrounding bodies through a circular hole made in a piece of cardboard.

The student examines the surrounding bodies through a circular hole made in a piece of cardboard. When does the un see more bodies: when approaching the eye of the cardboard or when moving away? Why?

The student sees the surrounding bodies through a round hole made in a piece of cardboard, the more the closer he brings the hole to the eye. That is, when the hole in the cardboard approaches the eye, the viewing angle increases, so he can see more objects. Conversely, the farther from the eye the hole is, the smaller the viewing angle and the fewer objects it can notice. This is ordinary geometry. Dependence on distances, viewing angle. The closer the hole is to the eye, the wider the viewing angle.