Question: The discovery of the supercurrent in SNS contacts is sometimes mistakenly attributed to what Welsh theoretical physicist and professor emeritus of physics at the University of Cambridge?
Sentence (from "Brian Josephson"): Brian David Josephson, {'1': ", '2': ", '3': ", '4': "} (born 4 January 1940), is a Welsh theoretical physicist and professor emeritus of physics at the University of Cambridge.
Relevant evidence: Yes