Experiments are reported which utilize third-sound waves on thin helium films to investigate the propagation of classical waves on substrates which have been patterned with random disorder in one dimension. The results are compared with predictions due to Condat and Kirkpatrick with the conclusion that the system demonstrates classical wave localization.

• Received 9 March 1989

DOI:https://doi.org/10.1103/PhysRevB.40.6648