Surface Tension: Lamella

Photo Shows the Apparatus Used at U.T. Austin

Instructions / Notes:

• Start by rotating the circular handle to lift the labjack such that the surface tension ring is fully submerged in the water. Record the force measured by the dynamometer.
• Slowly lower the labjack until you see a lamella form (a raised portion if the water that hugs up against the tension ring - pictured below).
• Once the lamella breaks, measure the force.

Concepts Conveyed:

• Display the strength of surface tension.
• Determine the amount of energy contained in the lamella.

Close up of the lamella. It appears as a bubble just below the ring.

Last updated on February 14, 2023