For ten points, name this Cambridge professorship now held by Stephen Hawking.
Officially created by Charles II, the 17 occupants include a Nobel Prize winner and 3 presidents of the Royal Society.  George Stokes held the post the longest, 54 years, Charles Babbage for 10 and Paul Dirac for 37.  Its most famous occupant lasted from 1669 to 1702.  For ten points, name this Cambridge professorship now held by Stephen Hawking.
Officially created by Charles II, the 17 occupants include a Nobel Prize winner and 3 presidents of the Royal Society.  
Lucasian chair