Trinity (nuclear Test) - Test Results

Test Results

The results of the test were conveyed to President Harry S. Truman, who was eagerly awaiting them at the Potsdam Conference; the coded message ("Operated this morning. Diagnosis not complete but results seem satisfactory and already exceed expectations ... Dr. Groves pleased.") arrived at 7:30 p.m. on July 16 and was at once taken to the president and Secretary of State James F. Byrnes at the "Little White House" in the Berlin suburb of Babelsberg by Secretary of War Henry L. Stimson. Information about the Trinity test was made public shortly after the bombing of Hiroshima. The Smyth Report, released on August 12, 1945, gave some information on the blast, and the hardbound edition released by Princeton University Press a few weeks later contained the famous pictures of a "bulbous" Trinity fireball.

Oppenheimer and Groves posed for reporters near the remains of the mangled test tower shortly after the war. In the years after the test, the pictures have become a potent symbol of the beginning of the so-called Atomic Age, and the test has often been featured in popular culture.

  • Maj. Gen. Leslie R. Groves and Robert Oppenheimer at the Trinity shot tower remains a few weeks later

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