PHY04 Sound Attenuation in Liquids

Sound Attenuation in Liquids Investigation of the attenuation of sound waves in different liquids depending on the sound path The experiment examines the attenuation of sound waves in various liquids as a function of the sound path. The sound attenuation coefficient is determined for each of the liquids using linear regression. Keywords: Sound propagation in liquids, longitudinal waves, reflection, absorption, scattering, sound attenuation in liquids, attenuation coefficient In gases and liquids, sound propagates in the form of longitudinal waves. The sound waves can lose energy on their way through the liquid through absorption, reflection or scattering. The sound field geometry can also influence the sound attenuation. In the experiment, the amplitudes of the reflection echoes are measured by an easily movable aluminum sound reflector. By moving the reflector in the liquid under investigation, the amplitude values ​​for a large number of different sound paths can be quickly determine