Lecture Demonstrations Laboratory

The Demonstrations Manual

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Surface Tension
Fluid Statics
Fluid Dynamics: Torricelli's Law; Air Driven Devices; Venturi Tube and Qualitative Verification of Bernouilli's Equation; Toilet paper gun; Airplane Wing in Wind Tunnel; Air Flow Dynamics; Terminal Velocity in Glycerin and Water; Terminal Velocity of Coffee Filters; Laminar and Turbulent Flow; Tornado Vortex; Vortex Cannon

Toilet paper gun

Purpose:

To demonstrate Bernoulli force.

Procedure:

Removable pvc attachment is used to mount a roll of paper at the blower nozzle. It allows rapid dispersal of toilet paper. Aim the leaf blower with the mounted paper roll at 45 deg. and turn it on. Streams of toilet paper 30' long can be suspended in the air.

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