refraction refractionthe bending of a sound wave towards a region of slower sound speed.Related Articles: Glossary: scattered/scatteringGlossary: shadow zoneGlossary: critical angleHow is sound used to study the Earth's history?How is sound used to explore for oil and gas?RefractionHow does sound move?Sound Travel in the SOFAR ChannelHow is sound used to measure waves in the surf zone?Sound Channel Variability Chris Knowlton2018-01-19T13:17:57-05:00