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Powder wettability measurement with the Washburn method. In its most general form the Lucas Washburn equation describes the penetration length ( L {\displaystyle L} ) of a liquid into a capillary pore or tube with time t {\displaystyle t} as L = ( D t ) 1 2 {\displaystyle L=(Dt)^{\frac {1}{2}}} , where D {\displaystyle D} is a simplified ...
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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).
Edward Wight Washburn (May 10, 1881 – February 6, 1934) was an American chemist. Washburn was born in Beatrice , Nebraska , in the family of William Gilmor Washburn, a lumber and brick merchant.
The Huffington Post has updated Hospice Check to reflect current inspection data. Since we first published this map in June, the number of hospices that haven’t been inspected in more than six years fell below 400, from 759.
It is important to note that the gradually varied flow equations and associated numerical methods (including the standard step method) cannot accurately model the dynamics of a hydraulic jump. [6] See the Hydraulic jumps in rectangular channels page for more information. Below, an example problem will use conceptual models to build a surface ...
Free web based applications include Entall [6] and Miedema Calculator. [7] The latter was reviewed and improved in 2016, with an extension of the method. [8] [9] The original Algol program [10] was ported to Fortran. [11]
The Joback method, often named Joback–Reid method, predicts eleven important and commonly used pure component thermodynamic properties from molecular structure only. It is named after Kevin G. Joback in 1984 [1] and developed it further with Robert C. Reid. [2] The Joback method is an extension of the Lydersen method [3] and uses very similar groups, formulas, and parameters for the three ...