Brain Snacks: Tasty Tidbits of Knowledge
The original London production of the play starred Bill Nighy as Bernard Nightingale, whom you may know better as Davy Jones in Pirates of the Caribbean 2 and 3. (Source)
While writing the play, Stoppard got science help from his son, who was a grad student in physics at Oxford. (Source)
One inspiration for the play is the book Chaos, by James Gleick. (Source)