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Quinckes method for Determination of SURFACE TENSION for BSc in HINDI
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=4dtVsLkT1ss
In this Physics video in Hindi we discussed how surface tension of a liquid (esp. Mercury) is determined by Quincke's method. In this method we can also determine the angle of contact between the liquid and the material on which the liquid resides provided that the force of adhesion is much less than the force of cohesion. In the process of the determination of the surface tension of the liquid we consider a drop of that liquid and virtually cut that from the middle. On the other side we get a region where the bulge is the maximum. The perpendicular distance of that region or point (2 dimensionally speaking) from the top is measured and variable 'h' is associated with that. We found, with the help of Quincke's method, that the surface tension of that liquid is half of the product of the square of 'h', the density of that liquid and acceleration due to gravity. • While evaluating the angle of contact, using Quincke's method, we found that the angle is [ π - inverse cosine of {(H^2/h^2) - 1}]. • For tutorials type quincke's method wiki on google and go to wikipedia. • • Click to watch the video on why the excess of pressure inside an air bubble is 2T/r : • • Excess pressure inside liquid drop , ... • Click to visit the homepage of our channel : / @edupoint.physics • Arijit Daripa • EduPoint, • Dam Road, • Chandil, • Dist- Seraikela-Kharsawan, • Jharkhand, • India.
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