Proceedings of the American Academy of Arts and Sciences, Volumen73Metcalf and Company, 1937 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 330
... diffusion . c ) Channel width 4 Å . Forces of repulsion enter so that the activation energy required for movement of ... diffusion involved surface adsorp- tion followed by subsequent diffusion , but the theory that the atoms enter the ...
... diffusion . c ) Channel width 4 Å . Forces of repulsion enter so that the activation energy required for movement of ... diffusion involved surface adsorp- tion followed by subsequent diffusion , but the theory that the atoms enter the ...
Página 353
... diffusion . The diffusion coefficient , D , of gold in lead bars is 2 X 10-5 cm2 day at room temperature , only 100,000 times less than that of sodium chloride in water , and the rate of diffusion of ThB in lead foil is about the same ...
... diffusion . The diffusion coefficient , D , of gold in lead bars is 2 X 10-5 cm2 day at room temperature , only 100,000 times less than that of sodium chloride in water , and the rate of diffusion of ThB in lead foil is about the same ...
Página 356
... Diffusion Most of the earlier experiments were performed with helium at one atmosphere pressure , and an evacuated collecting vessel . It would be prefer- able to use a higher concentration gradient by increasing the pressure on the ...
... Diffusion Most of the earlier experiments were performed with helium at one atmosphere pressure , and an evacuated collecting vessel . It would be prefer- able to use a higher concentration gradient by increasing the pressure on the ...
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5 | 145 |
Studies on the Fauna of Some Thermal Springs in the Dutch Indies By C T BRUES 71 | 164 |
Amphibians and Reptiles in Nerada By J M LINSDALE | 195 |
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