  A phenomenal object is such that it affects an individual by  occasioning different types of experience. For example, water causes  the experience of wetness and fluidity, rocks the experience of  resistance or hardness, irregular surfaces the experience of  roughness, etc. The material aspect of the experienced object as  experienced, although arising in dependence upon the activity of the corresponding sense sphere, at the same time obstructs and limits it: a wall limits movement, night restricts vision, etc. This is the  typical phenomenological stance: physical entities are mind  independent, but we have no way of knowing how they are in themselves apart from the way we perceive and conceive them. 