A pressure gradient does not cause any single particle to drift.

Happy Bottom's eye continued to cast about, looking to one side and the other, finding the pressure gradients.

Movement in these circumstances is over short distances and occurs down a pressure gradient.

The limiting form of the pressure gradient along the tube is.

The pressure gradient may be used as a decision point for treatment.

The first term on the right is analogous to a pressure gradient.

This is caused entirely by the pressure gradient across the valve.

There is a pressure gradient toward the center of the vortex.

There is a pressure gradient from the perimeter of the bowl or cup toward the center.

Similar processes often occur in the presence of a pressure gradient.