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What is the difference between a wetting and non-wetting fluid?
Wiki User
∙ 12y ago
A wetting fluid is capable of maintaining surface contact with a solid and its contact angles are less than 90 degrees (the angle starts from the wetted surface to the surface of the fluid). However non-wetting fluids are not willing to keep the contact area as large as wetting fluids and their contact angles are higher than 90 degrees. Imagine a droplet of Mercury. As a non-wetting fluid, mercury remains still on a solid surface like a ball. It does not spread on the solid surface like water.
Wiki User
∙ 12y ago
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