Journal
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
Volume 30, Issue 15, Pages 1597-1601Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/01694243.2016.1142799
Keywords
error propagation; tangent method; uncertainty; Contact angles
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The uncertainty in contact angles from sessile drops measured by the tangent method was estimated using a standard error propagation technique involving partial derivatives. If contact angles are<60 degrees, then uncertainty of the tangent method appears to be quite small,<= +/- 2 degrees. However, as theta values approach 90 degrees, uncertainty increases asymptotically and can exceed +/- 5 degrees.
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