Proceedings of the International School of Physics "Enrico Fermi.", Volume 27N. Zanichelli, 1953 - Nuclear physics |
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Page 233
... solvent at very high frequencies . Figure 8 shows the effect of diffe- rent solvents on the shear stiffness of essentially the same chain length of polyisobutylene . The highest - frequency shear wave measurements [ 10 ] have been made ...
... solvent at very high frequencies . Figure 8 shows the effect of diffe- rent solvents on the shear stiffness of essentially the same chain length of polyisobutylene . The highest - frequency shear wave measurements [ 10 ] have been made ...
Page 240
... solvent of low viscosity , the re- laxation time of the solvent is so low that its shear stiffness can be neglected . This corresponds to an equivalent circuit of Fig . 18 ( b ) for which the first re- laxation element has only a ...
... solvent of low viscosity , the re- laxation time of the solvent is so low that its shear stiffness can be neglected . This corresponds to an equivalent circuit of Fig . 18 ( b ) for which the first re- laxation element has only a ...
Page 248
... solvent . A similar model was later discussed by BUECHE [ 28 ] without spe- cifically taking account of the Brownian motion effect , but with quite similar results . Rouse's model can be considered a free draining model since no ac ...
... solvent . A similar model was later discussed by BUECHE [ 28 ] without spe- cifically taking account of the Brownian motion effect , but with quite similar results . Rouse's model can be considered a free draining model since no ac ...
Contents
GREENSPAN Translational dispersion in gases | 73 |
J LAMB | 101 |
T A LITOVITZ Ultrasonic relaxation in liquids | 176 |
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absorption Acoust activation energy amplitude atoms attenuation Boltzmann equation calculated chain Chem CO₂ coefficient collision complex compressibility concentration constant courbe curve d'absorption density dipole dispersion dissociation distribution dyn/cm² elastic electrolytes electrons energy entropy of fusion equation equilibrium equilibrium constant experimental factor function gases given heat conduction imperfections interaction ionic atmosphere ions isotherme Journ kinetic l'équilibre lattice liquid LITOVITZ maximum Maxwell distribution mean free path measurements method modulus molecular motion obtained parameters paramètres peak peut Phys polyisobutylene polymer pressure quartz crystal range ratio reaction relaxation effects relaxation frequency relaxation processes Rendiconti S.I.F. rotation segment shear shown in Fig solution solvent sound specific heat stiffness structural temperature temps de relaxation theory thermal tion transition trempe ultrasonic valeur variation velocity vibrational viscosity volume water molecules wave