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Theory of viscosity 1.Definition
Viscosity can be as a measure of resistance to flow of the fluid. Ex) Low viscosity material flows without higher resistance but high viscosity material has high resistance so flows long time. 2. Viscosity coefficient Coefficient of viscosity of fluid is depends on temperature, pressure, density of fluid.
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Coefficient of viscosity↑ >> viscosity ↑
Temperature🔼. ↓ Liquid 🔽, Gas🔼(frictional force) High viscosity materials: Honey, hair jell, Engine oil, Lotion…
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High viscosity engine oil
need more fuel, and Difficult to protect engine if engine oil's viscosity Is high too much engine oil can't do its roll.
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