Qualla: Atomic Bombings of Hiroshima and Nagasaki

Atomic Bombings of Hiroshima and Nagasaki: Introduction

Sat, 14 Mar 2026 00:00:00 GMT

At 8:15 a.m. on August 6, 1945, a wristwatch stopped. So did a clock on a wall, a pocket watch in a jacket, and every other timepiece within a kilometer of the Shima Hospital in Hiroshima. The bomb called Little Boy detonated 580 meters above the city with a force equivalent to 15,000 tons of TNT, and in the fraction of a second it took for the blast wave to flatten everything beneath it, time itself became a relic. Three days later, at 11:02 a.m. on August 9, a second bomb -- Fat Man, carrying a plutonium core -- detonated over Nagasaki. Between the two explosions, somewhere between 150,000 and 246,000 people died, most of them civilians. These remain the only uses of nuclear weapons in armed conflict. Japan announced its surrender six days after Nagasaki.

Atomic Bombings of Hiroshima and Nagasaki: The Calculations Behind the Fire

Sat, 14 Mar 2026 00:00:00 GMT

The path to Hiroshima began in a letter. In August 1939, Albert Einstein warned President Franklin Roosevelt that Nazi Germany might develop an atomic weapon, and Roosevelt authorized what became the Manhattan Project -- a secret, $2 billion effort employing more than 125,000 peo...

Atomic Bombings of Hiroshima and Nagasaki: What the Bombs Did

Sat, 14 Mar 2026 00:00:00 GMT

The physics of an atomic detonation produces three killing mechanisms that arrive in sequence. First comes the thermal radiation -- a flash of light and heat reaching several thousand degrees that ignites clothing, skin, and buildings within a two-kilometer radius. In Hiroshima, ...

Atomic Bombings of Hiroshima and Nagasaki: The Human Reality

Sat, 14 Mar 2026 00:00:00 GMT

Numbers cannot carry the weight of what happened in those two cities. A woman walking to work evaporated, leaving only the outline of her shadow burned into stone steps. A boy's tricycle, fused and twisted, was buried with him by his father, who could not bear to separate his son...

Atomic Bombings of Hiroshima and Nagasaki: Surrender and the Weight of Memory

Sat, 14 Mar 2026 00:00:00 GMT

Japan announced its acceptance of the Allies' terms on August 15, 1945, and formally signed the instrument of surrender on September 2 aboard the USS Missouri in Tokyo Bay. The bombings accelerated a surrender process already under pressure from the Soviet Union's declaration of ...

Atomic Bombings of Hiroshima and Nagasaki: Cities Rebuilt on Memory

Sat, 14 Mar 2026 00:00:00 GMT

Hiroshima today is a city of over one million people, built on the delta of the Ota River where the first bomb fell. The Hiroshima Peace Memorial Park occupies the ground that was once the city's busiest commercial district -- an open field created by the explosion, now filled wi...