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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 ...
Cloth, treated to be hydrophobic, shows a high contact angle. The theoretical description of contact angle arises from the consideration of a thermodynamic equilibrium between the three phases: the liquid phase (L), the solid phase (S), and the gas or vapor phase (G) (which could be a mixture of ambient atmosphere and an equilibrium concentration of the liquid vapor).
Historian Allan Lichtman has insisted that he stands by his prediction about who will win the 2024 presidential race despite recent polls – and revealed that he has “never experienced” so ...
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 ...
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 ( 1 ) is true (see, [ 1 ] page 1391).
An analysis and criticism of theomatics has been published by Tim Hayes, previously under the pseudonym "A. B. Leever". [3] [4]A German statistician, Kurt Fettelschoss, published an analysis [5] that claims that "The observed quantity of theomatic hits is significantly not random". [6]