Oppenheimer - Easter Eggs & Hidden Details

In an early university scene, before Oppenheimer formally meets him, the name "Bohr" is visible on a chalkboard. This subtly foreshadows the pivotal role Niels Bohr will play as a mentor and guiding figure in Oppenheimer's life and scientific journey.

Veteran actor Gary Oldman, who won an Oscar for playing Winston Churchill in "Darkest Hour," appears in a single, powerful scene as President Harry S. Truman. It's a significant cameo that brings another major historical figure of the era to life, highlighting the clash between the scientist's guilt and the politician's blunt pragmatism when Truman dismissively calls Oppenheimer a "crybaby."

In one of Oppenheimer's horrifying visions of the bomb's impact, the young woman whose skin is peeled off by the blast is played by Christopher Nolan's own daughter, Flora Nolan. The director stated he needed someone to portray the ultimate consequence of the bomb's power, and casting his daughter made the abstract horror intensely personal and real for him during filming.