From 1988 to 1993 , Lord Oxburgh was chief scientific adviser to the Ministry of Defence , and Rector of Imperial College London from 1993 -- 2000 .
He has been a visiting professor at Stanford , Caltech , and Cornell .
From 1988 to 1993 , visiting professor visiting professor was visiting professor     to the Ministry of Defence , and Rector of Imperial College London from 1993 -- 2000 .
He has been a visiting professor at Stanford , Caltech , and Cornell .