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The equation is named after Edward Wight Washburn; [1] also known as Lucas–Washburn equation, considering that Richard Lucas [2] wrote a similar paper three years earlier, or the Bell-Cameron-Lucas-Washburn equation, considering J.M. Bell and F.K. Cameron's discovery of the form of the equation in 1906. [3]
A force balance equation known as Washburn's equation for the above material having cylindrical pores is given as: [1] ...
For the condition of short time this shows a meniscus front position proportional to time rather than the Lucas-Washburn square root of time, and the independence of viscosity demonstrates plug flow. As time increases after the initial time of acceleration, the equation decays to the familiar Lucas-Washburn form dependent on viscosity and the ...
Schematic of a liquid drop showing the quantities in the Young equation. The contact angle (symbol θ C ) is the angle between a liquid surface and a solid surface where they meet. More specifically, it is the angle between the surface tangent on the liquid– vapor interface and the tangent on the solid–liquid interface at their intersection.
Washburn was born in Beatrice, Nebraska, in the family of William Gilmor Washburn, a lumber and brick merchant. Having taken all the chemistry courses available at the University of Nebraska (1899–1900) while teaching high school students (1899–1901), he entered the Massachusetts Institute of Technology in 1901, receiving a B.S. in ...
Displays an equation in a box. Template parameters [Edit template data] Parameter Description Type Status Indent indent One or two colons for an indent from the left, OR a valid CSS margin value. Leave blank for no indent. Example: String optional Cellpadding (margin) cellpadding Number of pixels to be used as padding of the box around the equation (how much the box wraps around the equation ...
A Lucas probable prime for a given (P, Q) pair is any positive integer n for which equation above is true (see, [1] page 1398). A Lucas pseudoprime for a given (P, Q) pair is a positive composite integer n for which equation is true (see, [1] page 1391).
The rise in core (RIC) method is an alternate reservoir wettability characterization method described by S. Ghedan and C. H. Canbaz in 2014. The method enables estimation of all wetting regions such as strongly water wet, intermediate water, oil wet and strongly oil wet regions in relatively quick and accurate measurements in terms of Contact angle rather than wettability index.