Publisher's Synopsis
Excerpt from Efflux of Gases Through Small Orifices
The orifices being rather small, it seemed at first sight that it might be necessary to have recourse to the kinetic theory of gases. But since even the smallest diameter used is about 300 times the mean free path for hydrogen, under the working conditions, it appeared upon consideration that it would probably be sufficient to regard each gas as a continuum and to treat the orifices merely as small steam-turbine nozzles, keeping in mind that disturbing causes which are of negligible importance for nozzles and orifices of diameters of the order of 1 cm' might well have appreciable effects for diameters 100 times smaller. The theory was therefore developed on this basis.
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