
A precise physics voyage from a compressed plutonium core to a city-shaking blast and its fallout, through nanoseconds to days.
The Nagasaki bomb relied on a mechanically boosted plutonium core with a non-spherical trigger to shape the blast.
Nagasaki’s security blackout meant the city began recovering before the firestorm even reached its peak.
Despite being second, Fat Man’s explosive yield was tuned so the mushroom cloud formed closer to ground level in Nagasaki.
The blast’s initial pressure wave caused more severe buildings by proximity, while seismic readings showed a unique local ground resonance.

A precise physics voyage from a compressed plutonium core to a city-shaking blast and its fallout, through nanoseconds to days.
The Nagasaki bomb relied on a mechanically boosted plutonium core with a non-spherical trigger to shape the blast.
Nagasaki’s security blackout meant the city began recovering before the firestorm even reached its peak.
Despite being second, Fat Man’s explosive yield was tuned so the mushroom cloud formed closer to ground level in Nagasaki.
The blast’s initial pressure wave caused more severe buildings by proximity, while seismic readings showed a unique local ground resonance.
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