Sentence:  If it is assumed that the formula given by Lodge of * * f , cosec 2lc applies , the pressure difference along the major axes can be calculated from the angle of <WSD>inclination</WSD> of the major axis , and from this the interfacial tension can be calculated . 
Meaning of the word marked with <WSD> tags:  (geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis)