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This 23-minute lecture from NPTEL-NOC IITM explores the fundamental concepts of spreading behavior when liquids interact with solid surfaces. Learn about the work of cohesion between similar molecules, adhesion between dissimilar molecules, and how these forces determine the spreading coefficient. Understand the physical principles that govern whether a liquid will spread across a solid surface or form droplets, essential knowledge for applications in coating technologies, materials science, and fluid mechanics.
