Interferometrische Schallabsorptionsmessung in Kohlendioxyd
A method of calculating absorption at 287.85 kc/s in CO2 using the impedance interferometer with any given circuit relationships appears to afford greater precision than the usual methods.
If short interferometer paths are used, it appears that the size of the transducer has small influence on the results. Measurements in the so-called interference field are hardly distorted by the diffraction and can be used for absorption measurements.
In dry CO2 the measured coefficient μ = 2 α λ = 0.0611 ± 0.0007, in agreement with theory and the published results.
If short interferometer paths are used, it appears that the size of the transducer has small influence on the results. Measurements in the so-called interference field are hardly distorted by the diffraction and can be used for absorption measurements.
In dry CO2 the measured coefficient μ = 2 α λ = 0.0611 ± 0.0007, in agreement with theory and the published results.
Document Type: Research Article
Publication date: 01 January 1959
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