Pressure Syringe
Equipment: A pressure syringe (a glass sphere with holes in it on the end of a glass tube with a piston) and a beaker of water.
What it does: The pressure syringe squirts water with equal force in all directions.
Concepts Demonstrated: Hydrostatic pressure is the same in all directions.
Classroom assembly:
- Insert the glass sphere of the pressure syringe into the beaker of water.
- Pull the piston up to fill the sphere with water.
- Point the syringe at the wall.
- Push the piston down to squirt the water out of the sphere. The water will squirt with equal force in all directions.
Cautions: This demonstration squirts water all over the classroom.
Setup Time: Short.
Difficulty: Straightforward.
Visibility: Low. This demonstration is appropriate for small classrooms.
Related demonstrations:
References: PIRA 2B20.50
Sutton M-271 Pressure the Same in All Directions - Pascal's Law. DHP Fb-2.
Original Construction: Purchased.
Disclaimer: All demonstrations are posted for the convenience and benefit of faculty and staff in the Department of Physics at Simon Fraser University and are not intended for outside use. The author(s) assume no responsibility or liability for the use of information contained on this site. Warnings and precautionary measures listed on this site assume normal operation of equipment and are not inclusive. Demonstrations may pose a significant hazard and can, in some instances, result in death; reasonable safety precautions must be taken. Demonstrations should be performed by qualified individuals only.
Prepared by Jeff Rudd, 1999
Revised by Laura Schmidt, 2007