Question

14 Define angle of contact
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Answer 1

Answer:

The contact angle is the angle, conventionally measured through the liquid, where a liquid–vapor interface meets a solid surfaces. It measures between the meniscus and the containing walls of a column of liquid measured from the vertical wall below the surface of the liquid to the position of the tangent to the meniscus at its point of contact with the wall.

Answer 2

Answer:

The angle of contact is the angle made by the tangent to the liquid surface at the point of contact with the solid surface inside the liquid.