It wasn’t until his later years that Paul Dirac moved to work for the University we call home. In September of 1970, after retiring from his position at Cambridge, Paul Dirac moved to Tallahassee, Florida where he was appointed to work as a visiting professor for Florida State University. He was 68 at the time and could have fully retired, but the continuation of his work may be an example of the overwhelming desire Dirac had for the field of science and quantum mechanics.
Prior to his appointment, in June of that same year, Dirac visited the city to test his endurance against the subtropical climate. In the end, he decided to move as Manci, his wife, preferred the weather to that of Cambridge. In 1972, Dirac took on becoming a full professor, a position which allowed him to continue active research and to pass on the knowledge he’d accumulated through the years. During his time at FSU, Dirac supervised a few graduate students, his last being Bruce Hellman who went on to become a physicist for the CIA.
When barking dogs weren’t ruining his walks, Dirac could be found in his spare time visiting the local lakes and sinkholes in an effort to combat the humidity and intense heat of Tallahassee. With a thermometer in hand, Dirac would systematically check the waters and, if they were above exactly 60 degrees Fahrenheit, he would go for a swim.
Dirac had no teaching responsibilities beyond his supervision of graduate students until 1973 when he agreed to give a series of lectures on the general theory of relativity. These lectures were given until 1980 and were used as the basis for his book General Theory of Relativity. He would go on to teach until his death on October 20, 1984, at the age of 82.
The work that Dirac put forth on the subject of quantum mechanics and quantum theory is still an inspiration to physicists today. Dirac’s spirit and the spirit of mathematical beauty, of which Dirac was quite enamored, still persists through science as we know it as theories, he put forward such as that of the single magnetic pole, the magnetic monopole, have not been proven but are enthusiastically looked upon as possibilities for the future of scientific discovery. Dirac’s papers can and should still be read and studied. As it was so eloquently put in The Strangest Man by Graham Farmelo, the more you read Dirac the more you understand quantum mechanics and the brilliant mind of one of the leading pioneers of the fascinating subject.
Farmelo, Graham, The Strangest Man: The Hidden Life of Paul Dirac, Quantum Genius, Faber and Faber 2009.