Details: This poster is a photo-composite of two separate pictures, blended into one seamless print. It shows a close-up of a man's face. He is wearing sunglasses, and the image in the reflection shows a mushroom cloud exploding over a cityscape.
Photo-compositing, or photomontage is the process (and result) of making a composite photograph by cutting and joining a number of other photographs. The composite picture was sometimes photographed so that the final image is converted back into a seamless photographic print. A nuclear weapon is a weapon which derives its destructive force from nuclear reactions of fission or fusion.