He is an emeritus professor at the University of Essex .
Brian Kidd Ridley FRS ( born 2 March 1931 ) is a British solid - state physicist specialising in semiconductor theory .
Brian Kidd Ridley FRS is an Brian Kidd Ridley FRS   at the University of Essex .
Brian Kidd Ridley FRS ( born 2 March 1931 ) is a British solid - state physicist specialising in semiconductor theory .