2B20.50 Pressure Syringe


Hydrostatic pressure is the same in all directions


The pressure syringe squirts water with equal force in all directions.



  • [1] Pressure syringe (a glass sphere with holes in it on the end of a glass tube with a piston)
  • [1] Beaker of water

Important Notes

  • This demonstration squirts water all over the classroom


  1. Insert the glass sphere of the pressure syringe into the beaker of water.
  2. Pull the piston up to fill the sphere with water.
  3. Point the syringe at the wall.
  4. Push the piston down to squirt the water out of the sphere. The water will squirt with equal force in all directions.


Additional Resources


  • PIRA 2B20.50
  • Sutton M-271 Pressure the Same in All Directions - Pascal's Law. DHP Fb-2.


  • Don't attempt this at home!

Last revised

  • 2020


Original construction: purchased.

Related AV

Related demos

If you have any questions about the demos or notes you would like to add to this page, contact Ricky Chu at ricky_chu AT sfu DOT ca.