Direct experimental determination of the mean free paths of hydrogen, nitrogen and oxygen have led to a value of the effective cross section of the molecule between 4 and 5 times greater than that obtained from viscosity measurements. Massey and Mohr have shown that assuming the rigid sphere molecule the wave mechanics leads to a difference in the values; the theoretical ratio, however, is not greater than 2.
Proceedings of the Iowa Academy of Science
©1934 Iowa Academy of Science, Inc.
Eldridge, John A.
"Mean Free Paths of Molecules and the Wave Mechanics,"
Proceedings of the Iowa Academy of Science, 41(1), 257-257.
Available at: https://scholarworks.uni.edu/pias/vol41/iss1/94