Mack Alfred Breazeale (15 August 1930 – 14 September 2009) was an American physicist particularly known for his work in ultrasonics and physical acoustics. Breazeale is widely regarded as one of the leading acousticians of the 20th century, highly accomplished in both theory and experiment.When he died, he was a retired Distinguished Research Professor and Senior Scientist at the National Center for Physical Acoustics at the University of Mississippi. Born in Leona Mines, Virginia, Breazeale grew up near Crossville, TN. Educated at Berea College, the Missouri School of Mines, and the Michigan State University, he was a tireless researcher and trained many others in the field of physics. Before his appointment at the National Center for Physical Acoustics, he was professor of physics at the