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Title of Journal: Nuovo Cim

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Abbravation: Il Nuovo Cimento (1955-1965)

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Società Italiana di Fisica

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DOI

10.1002/sce.3730330473

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1827-6121

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Determination of the ultrasonic absorption coeffic

Authors: E Grossetti
Publish Date: 1956/04/01
Volume: 3, Issue: 4, Pages: 673-676
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Abstract

In liquids with a high ultrasonic absorption coefficient as fi benzol has been observed that an augmentation of the power of the piezoelectric quartz might be a cause of energy dissipation to be ascribed to cavitation and acoustic flow which whould be the origin of the high absorption coefficient Measures are reported from which it appears that the augmentation of power really produces some uncertainty in the measure ofΔT and therefore of the coefficient α but anyway by a proper proceeding it is possible to obtain for α concordant values with respect to several measurements and one sees therefore that for benzol the thermal method gives a value of the absorption coefficient very greater as the theoretical valueÈ stato osservato per i liquidi ad elevato coefflciente di assorbimento ultrasonoro quali per esempio il benzolo che un aumento delia potenza del quarzo piezoelettrico potrebbe essere una causa di dissipazione di energia da attribuirsi alla cavitazione ed allo scorrimento acustico il che porterebbe ad un valore elevato del coeffleiente di assorbimento Si riportano misure dalle quali si rile va ehe effettivamente un aumento della potenza porta a qualohe incertezza nella misura del ΔTe quindi del coeffleientex ma in ogni modo procedendo opportunamente è possibile ottenere valori concordanti di a relativamente a varie misure e ehe quindi per il benzolo il metodo termico dà un coeffleiente di assorbimento molto maggiore del teorico

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  2. Effects of phonon pulses on the energy gap in a superconductor
  3. The renormalization of Dirac-Maxwell equations
  4. Remarks on the generators of the SU 3 group
  5. On l -forbidden M 1 transitions
  6. On a quadrilinear K 2 -π 2 coupling
  7. Large-angle cross-sections p+p→A+B and π+p→A+B at high energies predicted by the statistical model
  8. The equilibrium phase transition in liquid helium
  9. The range in G5 nuclear emulsion of protons with energies 87, 118 and 146 MeV
  10. The grain-density of emulsion tracks
  11. Muon capture in certain light nuclei
  12. A novel approach to elementary scattering theory
  13. Compound-nucleus radiative capture cross-section in the mev energy-range and nuclear-level density
  14. Sur le calcul des constantes vibrationnelles de l’oxyde azoteux
  15. Polarization effects in bremsstrahlung
  16. A renormalized, ghost-free lee model
  17. Investigation of the possibility of a π-λ resonance in the case of different parities of λ and ɛ
  18. The high-energy muon flux at sea level obtained from an observation of the burst-size spectrum
  19. $$\bar K - \mathcal{N}$$ scattering in the mandelstam representationscattering in the mandelstam representation
  20. 232 Th and 238 U fission induced by low-energy monochromatic γ-rays
  21. Representations of the Poincaré group associated to complex energy-momentum
  22. Representations of the Poincaré group associated to complex energy-momentum
  23. On the measurements of ionization in nuclear plates
  24. On the energy and pulse spectra of a fast ionization chamber
  25. The scattering of photons by photons
  26. On a new approach to alpha-decay and its application to the angular correlation of the decay $${}^{233}U\mathop \to \limits_\alpha {}^{229}Th\mathop \to \limits_\gamma {}^{229}Th$$
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  29. Multiple small angle scattering of waves by an inhomogeneous medium
  30. Effacement des alpha dans les plaques ilford C 2
  31. K meson exposures in water-soaked emulsions
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  33. Spin-orbit potential in pseudoscalar theory
  34. Remarks on triplet models in SU 3 symmetry
  35. The behavior of finite particles in conformal-covariant weak field theory
  36. Pion-hyperon scattering
  37. Cloud chamber study of cosmic ray electronic showers under dense materials (II)
  38. A formalism for parity-nonconserving reactions. — I
  39. A correlation between the emission of white light and cosmic radiation by a solar flare
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