Viscosity is a measure of a fluid's resistance to flow, describing how thick or sticky a fluid is and how easily it deforms under stress. Essentially, it indicates how much internal friction a fluid has when it moves. For instance, honey has a high viscosity because it flows slowly and resists movement, while water has a low viscosity and flows easily. The concept is crucial in understanding the behavior of different liquids in various conditions, from industrial applications to everyday situati