This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Soundfield Water MHz TransducerRadiusmm SRmm. en plot of an ultrasonic sound field transducer diameter mm frequency MHz water at distance mm focal zone as calculated by the RayleighIntegral The plot shows the sendreceive field that means the square of the calculated sound pressure values de Querschnitt eines SendeEmpfangsUltraschallfeldes