Search results
Oct 5, 2023 · Viscosity is a physical quantity that describes a fluid’s resistance to flow. It is a property that resists the relative displacement of the different layers of the fluid. It can be considered as the fluid friction occurring inside the fluid due to the internal friction between the molecules.
Viscosity is a measure of a fluid’s resistance to flow. The SI unit of viscosity is poiseiulle (PI). Its other units are newton-second per square metre (N s m -2) or pascal-second (Pa s.) The dimensional formula of viscosity is [ML -1 T -1].
- 2 min
- Viscosity does not change as the amount of matter changes, therefore it is an intensive property.
- The viscosity of liquids decreases rapidly with an increase in temperature, and the viscosity of gases increases with an increase in temperature.
- As the viscosity increases, the flow rate decreases. The flow rate is inversely proportional to viscosity.
- Kinematic viscosity is a measure of a fluid’s internal resistance to flow under gravitational forces.
Sep 17, 2024 · viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. Viscosity denotes opposition to flow. The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. Molasses, for example, has a greater viscosity than water.
- The Editors of Encyclopaedia Britannica
- Viscosity is the resistance of a fluid (liquid or gas) to a change in shape or movement of neighbouring portions relative to one another. Viscosity...
- The reciprocal property of viscosity is called fluidity, a measure of the ease of flow.
- The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units.
- The viscosity of liquids decreases rapidly with an increase in temperature, and the viscosity of gases increases with an increase in temperature. T...
Aug 3, 2021 · By definition, viscosity is a fluid’s resistance to flow or deformation. A fluid with a high viscosity, such as honey, flows as a slower rate than a less viscous fluid, such as water. The word “viscosity” comes from the Latin word for mistletoe, viscum. Mistletoe berries yield a viscous glue, also called viscum.
Apr 12, 2010 · Viscosity is the measure of resistance of a fluid to flow. A fluid that is highly viscous has a high resistance (like having more friction) and flows slower than a low-viscosity fluid. To think of viscosity in everyday terms, the easier a fluid moves, the lower the viscosity. Using our earlier example, which fluid has a greater viscosity?
Jun 23, 2022 · The viscosity of a liquid always decreases as temperature increases. As the molecules acquire more energy, they can escape from their mutual traction more readily. Long-chain molecules can also wriggle around more freely at a higher temperature and hence disentangle more quickly.
People also ask
What does viscosity mean in chemistry?
Do gases exhibit viscosity?
How many types of viscosity are there?
What is the Greek symbol for viscosity?
May 9, 2023 · The energy needed to make a fluid flow is determined by its viscosity, which is analogous to friction between moving solids. A high viscosity indicates that the fluid is resistant to motion due to the high internal friction caused by the strong intermolecular tensions between its layers.
