Bascom Sine Deaver, Jr. (born August 16, 1930 in Macon, GA) is a physicist known for his research into superconductor applications, and is a professor and assistant chairman for undergraduate studies of the physics department at the University of Virginia. A leading researcher in the field of superconductors, he is noted for his discovery that the magnetic flux threading a superconducting ring is quantized, a foundational discovery that led to the development of superconducting quantum interference devices, superconducting magnetometers, and superconducting tunnel junction diodes for use in microwave receivers. As a professor, Deaver has overseen 26 Ph.D. students, developed two undergraduate concentrations in optics and computational physics, and innovated a B.A. degree for students, a program designed to "expose students to the intellectual beauty of physics without sophisticated mathematics."
Deaver received his undergraduate B.S. degree from the Georgia Institute of Technology in 1952, and his masters at Washington University in St. Louis in 1954.
Between 1954 and 1957 he was a physicist and commissioned lieutenant in the United States Air Force at the Air Force Special Weapons Center at Kirtland Air Force Base in New Mexico. Deaver began his career as a professor at the University of Virginia in 1965, having completed in 1962 his Ph.D. at Stanford University, under the supervision of William M. Fairbank, with thesis Experimental evidence for quantized magnetic flux in superconducting cylinders. He attended the Massachusetts Institute of Technology as an Alfred P. Sloan Fellow between 1966 and 1968.