NEED FOR SURFACE TO FLOW
Some types of energies need a surface to flow. For example water. Although it flows through gravitational force it needs a surface to move. The surface is earth or a pipe. Similarly for a directional force to move a surface is essential. The surface of the earth helps these forces to move. Because of this quality of directional force, windows neither harm nor help the directional forces as they cannot enter through a window. Thus one can keep any number of windows without worrying the force beneath it is positive … Continue reading