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viscosity
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Viscosity
The resistance of a fluid to flow, caused by its internal friction, which makes it resist flowing past a solid surface and makes layers of the fluid resist flowing past other layers. Treacle and other thick, sticky liquids are highly viscous liquids. Water and petrol are runny liquids and have low viscosity.
The term viscosity applies to the motion of an object moving through a fluid as well as the motion of a fluid passing by an object. For the purposes of calculation, many fluids in physics are considered to be perfect, or nonviscous.
© RM 2009. Helicon Publishing is division of RM.
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boiling
boiling point
Brownian movement
change of state
condensation (chemistry)
conservation of mass
density
diffusion
dissolution
energy barrier
energy transfer
evaporation
expansion
freezing
freezing point
gas
gas laws
kinetic theory
latent heat
liquid
melting point
particle theory
purity
solid
solidification
solubility
sublimation
thermal expansion
vapour
viscosity
boiling point
Brownian movement
change of state
condensation (chemistry)
conservation of mass
density
diffusion
dissolution
energy barrier
energy transfer
evaporation
expansion
freezing
freezing point
gas
gas laws
kinetic theory
latent heat
liquid
melting point
particle theory
purity
solid
solidification
solubility
sublimation
thermal expansion
vapour
viscosity
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