Lewis number
It is named after Warren K . Lewis ( 1882–1975 ) , who was the first head of the Chemical Engineering Department at MIT . Some workers in the field of combustion assume ( incorrectly ) that the Lewis number was named for Bernard Lewis ( 1899–1993 ) , who for many years was a major figure in the field of combustion research . 
<triplet> Warren K. Lewis <subj> MIT <obj> educated at