![]() For liquids, it corresponds to the informal concept of thickness. Blood viscosity is a major issue: blood that is too viscous can form dangerous internal clots, while blood that is too thin will not clot this can lead to dangerous blood loss and even death. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. Viscosity can be of critical importance in medicine as fluids are introduced into the body intravenously. Lubricants that are too thin provide too little protection for moving parts. Lubricants that are too viscous can jam and clog pipelines. Manufacturing equipment requires appropriate lubrication to run smoothly. Some viscous fluids add texture to foods honey, for example, is quite viscous and can change the "mouth feel" of a dish. A thick potato and leek soup, for example, when it is less viscous, becomes French vichyssoise. Different cuisines also rely on the viscosity of sauces, soups, and stews. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile. Fats, which are moderately viscous when heated, become solid when chilled. In order to determine a fluids viscosity, you have to enter the field of viscometry, a subject area of a wider science called. Its other units are newton-second per square metre (N s m-2). As a physical property, it determines the. ![]() It is measured as a physical property of a fluid. The SI unit of viscosity is poiseiulle (PI). Viscosity refers to the state or condition of being viscous. ![]() Cooking oils may or may not change viscosity as they heat, while many become much more viscous as they cool. Viscosity is a measure of a fluids resistance to flow. Viscosity plays a significant role in the preparation and serving of food. Some oils have a more stable viscosity, while others react to heat or cold if your oil's viscosity index is low, it may become thinner as it heats, which can cause problems as you operate your car on a hot summer's day. In addition, viscosity also affects the rate of oil consumption and the ease with which your vehicle will start in hot or cold conditions. ![]() That's because viscosity affects friction, and friction, in turn, affects heat. When you put oil into your car or truck, you should be aware of its viscosity. ![]()
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