Look on the hoses and gaskets to find from where the fluid could be leaking. Add power steering stop leak additive to your power steering fluid. Lucas Power Steering Stop Additive is 100 percent guaranteed to stop seal leaks. In older cars, the seals shrink, causing leaks.
Diffusion is the net movement of molecules or atoms from a region of high concentration with high chemical potential to a region of low concentration with low chemical potential.
One of the core principles that govern the efficiency of diffusion is the ratio of surface area to volume. Surface area is the amount of cell membrane available for diffusion. So for a cell, surface area. actually represents how much diffusion that can happen at one time.