Rheology is the study of how materials deform and flow under applied forces. It examines the behavior of both liquids and solids, focusing on their viscosity, elasticity, and plasticity. This field helps scientists and engineers understand how substances like paint, food, and polymers behave when mixed, poured, or shaped. Rheological properties are essential in various industries, including pharmaceuticals, cosmetics, and construction. By analyzing how materials respond to stress and strain, researchers can optimize formulations and processes, ensuring products perform as intended. Understanding rheology is crucial for improving product quality and efficiency in manufacturing.