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The atomic bomb explosion generated a windstorm several kilometers wide that carried ash, dust, and debris over the mountain ranges surrounding Nagasaki. Approximately 20 minutes after the bombing, a black rain with the consistency of mud or oil came down carrying radioactive material for one to two hours before turning clear. [227]
It has since been set backward 8 times and forward 17 times. The farthest time from midnight was 17 minutes in 1991, and the nearest is 90 seconds, set in January 2023. The Clock was moved to 150 seconds (2 minutes, 30 seconds) in 2017, then forward to 2 minutes to midnight in January 2018, and left unchanged in 2019. [5]
The mission included three B-29 bombers and their crews: Bockscar, The Great Artiste and The Big Stink. Bockscar was flown on 9 August 1945 by Crew C-15, which usually manned The Great Artiste; piloted by Major Charles W. Sweeney, commander of the 393d Bombardment Squadron; and co-piloted by First Lieutenant Charles Donald Albury, C-15's aircraft commander. [7]
Non-nuclear detonation of an atomic bomb A USAF B-50 aircraft on a training mission from Biggs Air Force Base with a Mark 4 nuclear bomb (minus a fissile core) flew into the ground resulting in a high-explosive detonation, but no nuclear explosion. The cause of the accident could not be established; the aircraft gave no signals of distress, and ...
The Manhattan Project began in October 1941, just before U.S. entry into World War II. [1] Most of the project was concerned with producing the necessary fissile materials, but in early 1943, the project director, Brigadier General Leslie R. Groves Jr., created the Los Alamos Laboratory, also known as Project Y, under the direction of Robert Oppenheimer to design and build atomic bombs. [2]
Thousands are feared dead after a devastating 100-year cyclone ripped across the French archipelago of Mayotte on Saturday, inflicting destruction that one resident likened to an atomic bomb.
The uranium bomb (Little Boy, which is untested but is expected to work) leaves Los Alamos for Tinian island in the Pacific. At the Potsdam conference, Joseph Stalin promises to join the war against Japan. Winston Churchill urges Truman to use the bomb to constrain Russian expansion. The Allied leaders deliver an ultimatum to Japan "to give ...
For nuclear-bomb designers, the term was a convenient name for the short interval, rounded to 10 nanoseconds, which was frequently seen in their measurements and calculations: The typical time required for one step in a chain reaction (i.e. the typical time for each neutron to cause a fission event, which releases more neutrons) is of the order of 1 shake, and a chain reaction is typically ...