The author Susan Southard writes in her book Nagasaki that within a second of the bomb being dropped, the resulting fireball was 750 feet in diameter, and the temperature inside it was 540,000 degrees Fahrenheit, higher than at the center of the sun. “Horizontal blast winds tore through the region at two and a half times the speed of a category five hurricane, pulverizing buildings, trees, plants, animals, and thousands of men, women, and children. In every direction, people were blown out of their shelters, houses, factories, schools, and hospital beds; catapulted against walls; or flattened
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