Abstract
Now that the specific surface of a powder or granular solid can be quickly measured by the airpermeability method of Lea and Nurse1 or by Rigden's simplification of the method2, it has become possible for the first time to measure the average roughness and angularity, or 'rugosity' as we may call it, of the individual grains.
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References
Lea, F. M., and Nurse, R. W., J. Soc. Chem. Ind., 58, 277–83 (1939).
Rigden, P. J., J. Soc. Chem. Ind., 62, 1–4 (1943).
Wadell, H., J. Geology, 43, 250–280 (1935).
Rittenhouse, G., Ind. Eng. Chem. (Anal. Ed.), 15, 153 (1943).
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ROBERTSON, R., EMÖDI, B. Rugosity of Granular Solids. Nature 152, 539–540 (1943). https://doi.org/10.1038/152539a0
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DOI: https://doi.org/10.1038/152539a0
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