How Were Human Shadows Left on the Sidewalk by the Hiroshima Atomic Bomb?

When an atomic bomb explodes, it releases intense heat and light from the explosion site, which can “bleach” unprotected areas. In cities like Hiroshima and Nagasaki, dark silhouettes of people and objects were left behind after the US atomic bombings in August 1945. These shadows may have captured the final moments of individuals, similar to the victims of the Pompeii volcanic eruption. The shadows form when the bomb explodes, as the light and energy are absorbed by people and objects, leaving dark shapes on the surrounding surfaces.

Dr. Michael Hartshorne, an expert at the National Museum of Nuclear Science and History, explains that the nuclear fission in an atomic bomb explosion releases intense energy. This energy includes gamma radiation, which is harmful to the human body and can cause damage to tissue and DNA. The shadows left behind in Hiroshima and Nagasaki were the result of the intense heat and radiation from the atomic bombs, which created a dark shadow effect on the surfaces where people and objects were located.

The atomic bombs used in the attacks released gamma radiation and heat energy that caused the shadows to form on sidewalks and buildings. Over time, many of these shadows have disappeared due to weather and erosion caused by wind and water. Some silhouetted sections have been preserved in museums for future generations to reflect on. The use of atomic weapons raised questions about the long-term consequences of radiation exposure and the ethical implications of using such destructive weapons in conflicts.

By Samantha Robertson

As a seasoned content writer at, my passion for storytelling and creativity shines through in every article I craft. With a keen eye for detail and a knack for research, I thrive on translating complex topics into engaging reads that resonate with our diverse audience. My goal is to inform, entertain, and inspire readers through thought-provoking content that leaves a lasting impact. Join me on this exciting journey as we explore the world of news together.

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