"Oppenheimer" clip: Trinity

"These things are hard on your heart." J. Robert Oppenheimer (Academy Award-nominee Cillian Murphy), leader of the Manhattan Project's efforts at Los Alamos, prepares for the test of the world's first detonation of a nuclear bomb, in this scene from Christopher Nolan's film, "Oppenheimer." Music by Oscar-nominee Ludwig Göransson.

"Oppenheimer" is nominated for 13 Academy Awards, including best picture.

Watch David Martin's interview with Christopher Nolan on "Oppenheimer": "Oppenheimer," the father of the atom...

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