In 2001 , the Institute of Physics awarded him the Dirac Medal in recognition of his four - decade long influence on the semiconductor theory .
Ridley was elected a Fellow of the Royal Society ( FRS ) in 1994 .
In 2001 , the Institute of Physics awarded Ridley the Dirac Medal in recognition of Ridley 's four - decade long influence on the semiconductor theory .
Ridley was elected a Fellow of the Royal Society ( FRS ) in 1994 .