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• Sunday, May 23rd, 2010

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How to measure the water-repellency or “hydrophobicity”

The measurement that defines how water-repellent a surface is after being treated with a hydrophobic coating is called “contact angle”, also called ‘wetting angle’, which is the angle formed by the material’s surface and the tangent of the interface between the fluid (i.e.: water) and the environment at the point of contact (the glass surface for example).

Visit this Wikipedia webpage or further “contact angle” information

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