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ANGLE OF CONTACT...

ANGLE OF CONTACT

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Characteristics of angle of contact :
(1) It depends upon the nature of the liquid and solid in contact, and is constant for a given liquid-solid pair, other factors remaining unchanged.
(2) It depends upon the medium (gas) above the free surface of the liquid.
(3) It is independent of the inclination of the solid to the liquid surface.
(4) It changes with surface tension and, hence, with the temperature and purity of the liquid.
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