Abstract
Ritter and Drake1 have proved the usefulness of measuring the penetration of mercury under pressure, in order to elucidate the pore-size distribution of various substances. From elementary theory, it follows that for the radius r
p of pores filled at a pressure p: 
where σ is surface tension and θ is contact angle. Substitution of σ = 480 dyne/cm. and θ = 140° gives: 
.
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References
Ritter, H. L., and Drake, L. C., Indust. Eng. Chem. Anal., 17, 782 (1945).
For a recent review, see Carman, P. C., J. Phys. Chem., 57, 56 (1953).
Kiperman, S., and Temkin, M., Acta Physicochim. (U.S.S.R.), 21, 267 (1946).
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ZWIETERING, P., KOKS, H. Pore-Size Distribution of Porous Iron. Nature 173, 683–684 (1954). https://doi.org/10.1038/173683a0
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DOI: https://doi.org/10.1038/173683a0
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