Question

How to find angle of contact

Answer 1

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The sessile drop contact angle is measured by a contact angle goniometer using an optical subsystem to capture the profile of a pure liquid on a solid substrate. The angle formed between the liquid–solid interface and the liquid–vapor interface is the contact angle.

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Answer 2

Answer:dynamic contact angle can be measured by using sigma force tensioment force tensioment measure the mass affecting to the balance when a simple of solid is brought in the contact with the test liquid

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