Carnegie Institution of Washington publication . viscosity, 77, of the intermolecular gasthrough which the hydrogen molecule supposedly transpires, if iV=6oX io18,2r = 2Xio-8 cm. (O. K- Meyer), is rt = i /6n Nrv = 3 The viscosity of hydrogen at ordinary temperatures is normally X the virtual viscosity of the intermolecular hydrogen would be fourand a half times larger than its normal Millikans data for N and r, viz, AT = 2r = ~8 cm. the datum 2AV = io11 replaces 2ATr= , whence 77 = 826Xio~6 Here in turn the discrepancy of
Carnegie Institution of Washington publication . viscosity, 77, of the intermolecular gasthrough which the hydrogen molecule supposedly transpires, if iV=6oX io18,2r = 2Xio-8 cm. (O. K- Meyer), is rt = i /6n Nrv = 3 The viscosity of hydrogen at ordinary temperatures is normally X the virtual viscosity of the intermolecular hydrogen would be fourand a half times larger than its normal Millikans data for N and r, viz, AT = 2r = ~8 cm. the datum 2AV = io11 replaces 2ATr= , whence 77 = 826Xio~6 Here in turn the discrepancy of Stokess equation is to be added. If itis applied, the value of 77 will be further increased about 50 per cent or thevirtual viscosity of the intermolecular medium is finally 77= 1240X106 LIQUIDS AND ALLIED EXPERIMENTS. 25 or about times the normal viscosity of hydrogen. Correcting as in §24,the factor becomes 15, which does not agree with the corresponding datumfor air (about 13 times) as well as the values found above appeared cfekZAdkhl 3J3pT5 Fig. 7.—Chart showing loss of mass of gas in diver in lapse of of hydrogen into hydrogen. 21. Transpiration of Imprisoned Air into Hydrogen Through Water.— The immediate use of equation (1) is inadmissible, since the gas constant Rvaries, as the gas within the swimmer changes its composition. But sinceat a given pressure and temperature Rp is constant for all mixtures, m = vp- Mgp^R -£) is still the correct value, relatively to volume, as intimated above. It ismerely necessary, therefore, to coordinate the correct value of p for theinitial gas and its gas constant R, after which the equation is applicable toall subsequent gas mixtures, if the diffusion k by volume is to be computed;but m is now merely an apparent rate, and k merely a transitional value. 26 THE DIFFUSION OF GASES THROUGH The experiment of this section is the converse of those briefly detailed in table 2 and repeated at greater length
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