Professor Roger Abbott was an older physicist at the university. It was mentioned in "The Champagne Reflection" that he died. Leonard, Howard and Raj cleaned out Professor Abbott's office and found several notebooks with columns of random numbers in them. No other significant research was found. They went to see Professor Sharp who shared the office with him to ask about the notebooks and hoped that they were in code about some research project. The books turned out to be his diet diary and that Professor Abbott had a theory about limiting his caloric intake would allow him to live forever. The guys were disappointed. Professor Sharp shared the office with him for thirty years where he his research led to no major breakthroughs and he had to listen to Professor Abbott's stomach growl, whic