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[55] [56] In January 2016, North Korea claimed to have successfully tested a hydrogen bomb, [57] although only a magnitude 5.1 seismic event was detected at the time of the test, [58] a similar magnitude to the 2013 test of a 6–9 kt (25–38 TJ) atomic bomb. These seismic recordings cast doubt upon North Korea's claim that a hydrogen bomb was ...
This crash project was developed partially with information obtained via the atomic spies at the United States' Manhattan Project during and after World War II. The Soviet Union was the second nation to have developed and tested a nuclear weapon. It tested its first megaton-range hydrogen bomb ("RDS-37") in 1955.
Test No. 6, First hydrogen bomb test – June 17, 1967; CHIC-16, 200 kt-1 Mt atmospheric test – June 17, 1974 [25] #21, Largest hydrogen bomb tested by China (4 megatons) - November 17, 1976 #29, Last atmospheric test – October 16, 1980. This is to date the last atmospheric nuclear test by any country. [26]
RDS-27, 250 kiloton bomb, a 'boosted' fission bomb tested 6 November 1955. RDS-37, 3 megaton bomb, the first Soviet two-stage hydrogen bomb, tested 22 November 1955; RDS-220 Tsar Bomba an extremely large three stage bomb, initially designed as a 100-megaton-bomb, but was scaled down to 50 megatons for testing. Intercontinental Ballistic Missiles
The first thermonuclear ("hydrogen") bomb test released energy approximately equal to 10 million tons of TNT (42 PJ). Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing as little as 600 pounds (270 kg) can release energy equal to more than 1.2 ...
George shot was physics experiment relating to the hydrogen bomb; Item shot was first boosted fission weapon. Buster-Jangle: 1951 7: 7: 7: small to 31 72: The first series in which troop maneuvers (Desert Rock exercises) were performed. Tumbler-Snapper: 1952 8: 8: 8: 1 to 31 104: Ivy: 1952 2: 2: 2: 500 to 10,400 10,900
The anti-nuclear weapons movement grew rapidly because for many people the atomic bomb "encapsulated the very worst direction in which society was moving". [59] Peace movements emerged in Japan and in 1954 they converged to form a unified "Japanese Council Against Atomic and Hydrogen Bombs".
In early news accounts, pure fission weapons were called atomic bombs or A-bombs and weapons involving fusion were called hydrogen bombs or H-bombs. Practitioners of nuclear policy, however, favor the terms nuclear and thermonuclear, respectively.