عنوان مقاله [English]
One of the important issues concerning the motion in the substance of nature is the idea of intensity of the motion which has had different interpretation. The problem or challenge is how the invariable movement in categories of place and position –that currently is called invariable motion in space- can be consistent with the intensity of movement in substance. Different approaches for solving the problem has been proposed, however, none of them has given a final solution. The solution according to this article is that essentially the smooth movement in place and position is not a motion, but in relation to other things, the meaning of motion is truly attributed to it. This response, by proposing a new viewpoint to the meaning of change in the categories of the place and position, in addition to the solving of the mentioned problem, opens a new approach to the meaning of change and intensity in these categories.