Pressure is defined as the magnitude of force per unit area. Considering an incompressible fluid, the force can be expressed in terms of specific weight or fluid density. Consider four points in water. The pressure is the same for all points at the same depth from the surface, but less at shallow depths. The pressure increases linearly with depth from the surface. According to Pascal's law, the pressure intensity at any given point in an incompressible static fluid is the same in all directions. Assume a wedge-shaped infinitesimal fluid element of unit width. The force on each side is expressed as the product of pressure and area. As the liquid is at rest, the sum of the horizontal and vertical components of the forces should be zero. Taking the horizontal components and using trigonometric relations, the equations are simplified to obtain px equal to ps. Similarly, considering the vertical components, the equations are simplified to obtain py equal to ps. So, the pressure at any point is the same in all directions.