Show Acoustic Experiment A very pretty experiment In acoustics acoustics tics can cnn be achieved ed by the use of a n achild's achild's childs child's tin horn I TIe a sheet of thin paper paler firmly over o the bI big end hold tho the horn so that the paper Is level le scatter over It a n little fine sand or I c podium m powder then sing a note into the time horn bora You will find that the powder has hag formed itself into an nn Intricate geometrical ti figure ure It was In this wn way that the first voice pictures were obtained |