Also, recall that flow is normal to the unit area of the cell.
Note that the represents the line charge per unit area in the plane.
It has the same power per unit area at the center of the receiving spot on the ground.
Note that stress has units of pressure, or force per unit area.
In general, a pressure is a force per unit area, across a surface.
Intensity has many other meanings in physics, with the most common being power per unit area.
Couple stresses are moments per unit area applied on a surface.
In general, crop rotation levels per unit area are very low.
A very rough surface has many more molecules per unit area to be hit by light.
Pressure is the amount of force acting per unit area.
