Oppenheimer's grandson has disputed the incident, saying there's no record of it. In the movie, Niels Bohr nearly takes a bite out of the apple, but that scene was invented for dramatic effect.

Nolan loves to tell a disjointed, stream-of-consciousness narrative, and Oppenheimer is no different ... contributions from Kenneth Branagh (Niels Bohr), Tom Conti (Albert Einstein), Josh Hartnett ...