The blockbuster Oppenheimer movie focuses on two portrayals of J. Robert Oppenheimer. One is the famous physicist known as the architect of the atomic bomb, and the second is a more vulnerable man, maligned as a communist sympathiser. Then there’s a third portrait. It makes a cameo in the film and it resides right here at the National Portrait Gallery. Pulitzer-Prize winning biographer Kai Bird, whose book inspired the movie, takes a look with us. See the portrait we discuss: J. Robert Oppenheimer, Time magazine cover by Ernest Hamlin Baker