NYT looks at the movies "Oppenheimer" and "The Day after Trinity." Christopher Nolan's film about the scientist who spearheaded the development of the atomic bomb was at theaters July 21. Else's documentary "The Day after Trinity," was made in 1981 and shown again by the Criterion Channel without a subscription to a new generation of viewers to keep alive its message and its relevance. The war in Eastern Europe and nuclear threats have created a surging interest in how the world entered a new era after Hiroshima. Else, now a professor at UC Berkeley, says this story needs to be told to a new generation, and by a new group of storytellers. It also shows the paradox of a thoughtful soul in Oppenheimer who never intended for his invention to be used and the savage nature of this creation.