#VISCOSITY OF WATER AT 20 C FREE#
Meanwhile, molecules further from the surface are more free to flow. Basically, these molecules stick to the surface to a greater or lesser degree. When you pour a liquid from a container, there is friction between the container wall and the molecules. As with friction between solids, higher viscosity means it takes more energy to make a fluid flow. Viscosity is friction between fluid molecules. An alternative and equivalent unit is pound-force-seconds per square foot (lbf In American and British engineering, another common unit is pound-seconds per square foot (lb This makes the viscosity of water at 20 ☌ about 1 cP or 1 mPa
However, you’ll often see viscosity expressed in terms of pascal-second (Pa The SI unit for viscosity is newton-second per square meter (N Gas viscosity increases as temperature increases.Liquid viscosity decreases as temperature increases.Viscosity is a fluid’s resistance to flow.Common symbols for viscosity include the Greek letter mu (μ) and the Greek letter eta (η). Mistletoe berries yield a viscous glue, also called viscum. The word “viscosity” comes from the Latin word for mistletoe, viscum. A fluid with a high viscosity, such as honey, flows as a slower rate than a less viscous fluid, such as water. Viscosity is a fluid’s resistance to flow.īy definition, viscosity is a fluid’s resistance to flow or deformation.
This entry was posted on Augby Anne Helmenstine (updated on November 18, 2021)
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