School of Physics Lecture Demonstration Manual

Fa-3 Pascal's Apparatus

Published: Thursday 09 March 2006 - Updated: Monday 28 March 2011


To demonstrate that the pressure of a liquid varies with the depth and does depend on the shape of the vessel.



Click on pictures to enlarge.

Pascals Apparatus Diagram


Pascal's apparatus consists of a stand capable of receiving one of two glass vessels. The vessel is slowly filled with dyed water and the position at which the pressure of the water overcomes the flanged seal is marked with the pointer. Repeating the experiment with the second vessel clearly demonstrates that the thrust on the base depends on the area of the base and the depth of the liquid but not on the shape of the container.

Safety notes


Sharps Safety 

top of page