Physical Acoustics, Volume 1; Volume 2, Part 2; Volume 3Robert Bruce Lindsay |
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Page 28
... amplitude of excursion at a given distance from the centre varying in both cases as the amplitude of excursion , in a normal direction , of the surface of the sphere itself . The only difference is that expressed by the symbolic ratio F ...
... amplitude of excursion at a given distance from the centre varying in both cases as the amplitude of excursion , in a normal direction , of the surface of the sphere itself . The only difference is that expressed by the symbolic ratio F ...
Page 135
Robert Bruce Lindsay. 10 Rayleigh : Aerial Plane Waves of Finite Amplitude Although Lord Rayleigh did not , himself , introduce the study of high - intensity , finite- amplitude sound radiation , macrosonics ( see Paper 29 by S. Earnshaw ...
Robert Bruce Lindsay. 10 Rayleigh : Aerial Plane Waves of Finite Amplitude Although Lord Rayleigh did not , himself , introduce the study of high - intensity , finite- amplitude sound radiation , macrosonics ( see Paper 29 by S. Earnshaw ...
Page 463
... amplitude of suc- cessive pulses and computing the attenuation by the formula , total attenuation in nepers = A = log . ( Io / I1 ) , ( 12 ) where Io is the amplitude of the first received pulse and I the amplitude of a reflected pulse ...
... amplitude of suc- cessive pulses and computing the attenuation by the formula , total attenuation in nepers = A = log . ( Io / I1 ) , ( 12 ) where Io is the amplitude of the first received pulse and I the amplitude of a reflected pulse ...
Contents
Introduction The Nature of Physical Acoustics | 1 |
On the Communication of Vibrations from a Vibrating Body to | 20 |
Editors Comments on Paper 3 | 32 |
Copyright | |
32 other sections not shown
Common terms and phrases
absorption coefficient acoustic acoustic impedance adiabatic amplitude angle approximately assume attenuation axis Bazulin beam C₁ C₂ calculated characteristic impedance constant cosh crystal curve denote density depends direction distance effect eikonal equation electric energy equation experimental expression filter finite fluid function gases given gradient heat conduction helium high frequencies impedance infrasonic infrasound intensity Kneser layer liquid longitudinal waves Lord Rayleigh measurements medium method microbaroms molecules motion obtained oscillator P₁ P₂ paper particle Phys physical piezo-electric plane wave plate problem propagation quantity quartz radiation pressure range ratio Rayleigh relation relaxation resonator reverberation shadow zone shown sinh solution sound velocity sound waves specific heat superfluid surface temperature theoretical tion transmission tube V₁ velocity of sound vibration viscosity volume wave fronts wavelength Z₁ zero ρο