roughness factor (rugosity)

of a surface
https://doi.org/10.1351/goldbook.R05419
The ratio: \[f_{\text{r}}=\frac{A_{\text{r}}}{A_{\text{g}}}\] where \(A_{\text{r}}\) is the @[email protected] (true, actual) @[email protected] and \(A_{\text{g}}\) is the @[email protected]
Source:
PAC, 1986, 58, 437. (Interphases in systems of conducting phases (Recommendations 1985)) on page 439 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014