Photo Shows the Apparatus Used at U.T. Austin

• Demonstration shows the pressure of water is dependent on the height of the water column above an opening in the glass tube.


• A tall glass tube has three rubber stoppers at different heights on the tube is filled with colored water.


• A drainage tank is provided and should be lined up correctly to catch each emitted stream.


• The water pressure decreases as the the height of the water column above each hole becomes lower.

Demo / Staff:

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• The ring stand for the glass column needs to be clamped to whichever table is used for this demo.


• Also, it takes two staff members to either retrieve or place the glass column on top of the fluid mechanics cabinet.


• it takes about 2 liters of colored water to fill the glass cylinder.
• Make sure the water is blue or green. Do NOT color yellow.

Photo Shows the Apparatus Used at U.T. Austin