While water-like, semi-viscous, and viscous are good terms to use sometimes you need to get more specific about the viscosity of a fluid. Viscous – Hair gel or pastes which are thick and do not move easily.Semi-Viscous – Maple syrup or soybean oil that is a bit thicker in nature.Water-Thin – Considered to have free flowing characteristics, such as perfumes/colognes or obviously water.These are the three main terms used to describe the viscosity of a liquid. At high viscosities, fluids are going to flow and move much slower, a good example would be a gel, lotion, or even thicker peanut butter type consistency. A familiar example would be liquids such as water and alcohol. That is, unless a propeller is attached to propel or push the ship forward, or you could also create this same push manually with an oar.Īt low viscosities, fluids will flow with greater ease. If you set a ship in motion it would eventually come to a halt because of the viscosity of the water, which resists the flow of the boat. What causes viscosity is the cohesive forces between molecules in the fluid. What is viscosity? In simple terms, viscosity is a measure of a liquid’s resistance to flow, or the measure of internal friction.
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