The height difference in a manometer refers to the difference in the fluid column levels between the two arms of the manometer. A manometer is a simple device used to measure pressure differences in a fluid system. It consists of a U-shaped tube filled with a liquid (often mercury or water) and connected to the fluid system at two different points.Â
- Δh is the height difference in the manometer arms,
- p1 is the pressure at one point in the fluid system,
- p2 is the pressure at another point in the fluid system, and
- w is the specific weight of the manometer fluid.