Curated OER
Contact Angle. Interfacial Tension and Wetting
Students determine the contact angle of water on different surfaces. In this physics instructional activity, students calculate their percent error using a mathematical formula. They explain the advantages of using non-wetting surface...
OpenStax
Open Stax: Cohesion and Adhesion in Liquids: Surface Tension and Capillary Action
From a chapter on Fluid Statics in a Physics textbook. This section of the chapter describes the cohesive and adhesive forces in liquids, the role of cohesion in the surface tension of liquids and bubbles, and how capillary action works....
TeachEngineering
Teach Engineering: Investigating Contact Angle
Students observe how water acts differently when placed on hydrophilic and hydrophobic surfaces. They determine which coatings are best to cause surfaces to shed water quickly or reduce the "fogging" caused by condensation.
TeachEngineering
Teach Engineering: Wetting and Contact Angle
Students are presented with the concepts of wetting and contact angle. They are also introduced to the distinction between hydrophobic and hydrophilic surfaces. Students observe how different surfaces are used to maintain visibility...