Understanding Viscosity: Definition and Explanation | Learn From Experts

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    Definition Viscosity
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SUMMARY

Viscosity is a measure of a fluid's resistance to flow and movement, distinguishing it from friction, which applies to solids. When an object moves through a fluid, the fluid's viscosity causes some of it to move along with the object, unlike solids that remain stationary. This fundamental property is crucial for understanding fluid dynamics and is applicable in various scientific and engineering contexts. For further details, refer to the Wikipedia page on viscosity.

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SOHAWONG
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In a question,I found a unit call 'viscosity',but i don't what it is
can anyone explain the definition,I have no idea of this completely,THX
 
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Welcome to PF!

Hi SOHAWONG! Welcome to PF! :wink:

Solids have friction.

Fluids (liquids and gases) have viscosity.

Both measure the resistance to movement.

The main difference between friction and viscosity is that when an object moves against a solid, the solid stays where it is, but when an object moves through a fluid, some of the fluid moves with the object.

See http://en.wikipedia.org/wiki/Viscosity" for details. :smile:
 
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