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Begründung und anschauliche Deutung der Raoschen Formel für die Schallgeschwindigkeit

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The RAO relation between the velocity of sound in non-associated liquids and the molar volume is derived from a theory of the author, according to which the velocity in organic liquids is proportional to the packing of the molecules. An atomic interpretation is thus given to RAO's empirical formula. The additive effect (due to various molecular groups) differs from RAO's values in that the molar volume is replaced by a proportionate value, also independent of temperature, which lies between the molar volume and the molecular volume per mole. The designation “molar sound velocity” which is frequently used for the expression of RAO is therefore incorrect.
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Document Type: Research Article

Publication date: January 1, 1954

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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