He was given the distinction of an honorary membership in the APS in 1948 , the only American to receive one .
Porter retired from Harvard , assuming professor emeritus status , in 1928 but remained active in APS activities and with the Harvard Apparatus company .
Porter was given the distinction of an honorary membership in the APS in 1948 , the only American to receive one .
Porter retired from Harvard , assuming professor emeritus status , in 1928 but remained active in APS activities and with the Harvard Apparatus company .