Fluid Pressure Vs Depth
To demonstrate that the fluid pressure increases linearly with depth and that pressure is isotropic.
Glass tube connected to manometer, water tank.
An L-shaped glass tube connected to a liquid manometer is inserted into a tank of water. The pressure in the water tank can be measured at any depth. Holding the tube at a particular depth and rotating it about the end will show no change in pressure, demonstrating that pressure is isotropic.◙
Daniel E. Beeker, Depth Dependence of Pressure, TPT 28, 486-488 (1990). Alpha E. Wilson, The Hydrostatic Paradox, TPT 33, 538-539 (1995).