What Is A Nuclear Weapon?
A nuclear weapon, commonly known as a nuke, is a type of explosive device that unleashes its devastating power through nuclear reactions. This can happen either through fission, as seen in fission bombs, or through a mix of fission and fusion reactions, which is what we call a thermonuclear bomb. These can cause tremendous explosions. In both bombs, relatively large amounts of energy come from relatively small amounts of the substance.
The world’s first fission (“atomic”) bomb released energy equivalent to about 20,000 tons of TNT. About 10 million tons of TNT energy were detonated during the first thermonuclear bomb test. Nuclear weapons yields ranged from 50 megatons for the Tsar Bomba to 10 tons TNT for the W54. The yield of at least 1.2 megatons TNT equivalent, Warhead weight of the one-stage version is in the range of 600 pounds, a lighter version of the thermonuclear bomb.
Test and Development
Nuclear weapons have only been used in conflict twice, both by America against Japan in the closing stages of World War II. The "Little Boy" gun-type bomb, containing enriched uranium 235, was dropped on the city of Hiroshima on August 6, 194,5, by the U.S. Army Air Forces.
Three days after, while still pondering its Body, it was dropped over the Japanese city of Nagasaki on August 9. Estimates of the number of civilians and military killed or seriously wounded as a result of the atomic bombing differ widely. I would suggest two hundred thousand as the outside figure. A debate is raging about the ethics of these bombs and whether they helped Japan to surrender. More than 2,000 nuclear weapons have been tested and proven in this way since the atomic bombings of Hiroshima and Nagasaki.
TYPES
Nuclear weapons can be divided into two categories: those that primarily obtain their energy from fission reactions, and those that initiate nuclear fusion reactions that yield a significant portion of their overall energy output.
Fission Weapon
The explosive energy of all currently in-use nuclear weapons comes from nuclear fission processes. Atom bombs are the term used to describe weapons whose explosive output originates only from fission processes. Since its energy originates from the atom's nucleus, exactly like that of fusion weapons, this has long been recognised as something of a misnomer.
With fission weapons, a mass of fissile material is compressed using chemically fueled explosive lenses, or a sub-critical sphere or cylinder of fissile material is shot into another (the "gun" method), forcing a mass of fissile material into supercritical and permitting an exponential growth of nuclear chain reactions. The latter strategy, known as the "implosion" method, is more advanced and effective than the first.
Fusion Weapon
A significant amount of the energy used in the other fundamental types of nuclear weapons is produced by nuclear fusion processes.
Since these fusion weapons rely on hydrogen isotope fusion processes, they are sometimes referred to as thermonuclear weapons or, more popularly, hydrogen bombs. The energy source for all such weapons is fission reactions, which are used to "trigger" fusion reactions, which in turn can trigger more fission reactions.
Only six countries—the United States, Russia, the United Kingdom, China, France, and India—have successfully conducted thermonuclear tests. Whether India's test is a "true" multistage thermonuclear weapon is debatable. North Korea has claimed to have tested fusion weapons.
Other Types
There are many varieties of nuclear weapons. A boosted fission weapon, for instance, is a fission bomb that, although it is not a fusion bomb, improves its explosive yield by a few fusion processes. A deuterium-tritium mixture is injected into the bomb core of an internally boosted fission bomb, and an externally boosted fission bomb consists of layers of depleted uranium and lithium-deuteride concentric shells layered on the outside of the fission bomb core.
The Soviet Union was able to field the first partially thermonuclear bombs thanks to the external boosting technology, but it is no longer in use because it requires a spherical bomb geometry, which was sufficient for the arms race of the 1950s when the only delivery vehicles available were bomber planes.
Governance, Law, and Control
The proliferation and possible use of nuclear weapons are important issues in the context of international relations and diplomacy, due to the concerns that the three weapon types create. In general, it is only the head of state or head of government (however, the George Arnolds) who is lawfully empowered to use nuclear weapons.
Distrust crippled the United States and the Soviet Union’s pursuit of weapons control agreements in the late 1940s. A few days after the manifesto was first published, the village in Pugwash, Nova Scotia, birthplace of the philanthropist Cyrus S. Eaton, where he had proposed a conference in the manifesto, offered to host it. The Pugwash Conferences on Science and World Affairs were planned to open with this meeting in July 1957.
The environmental impact of such nuclear testing and the continued proliferation of nuclear weapons to other countries were being effectively stopped by the 1960s. For example, the Treaty on the Non-Proliferation of Nuclear Weapons (1968) sought to place controls on the activities that signatories could pursue, transferring non-military nuclear technology to member countries for nuclear power generation without fear of such nuclear weapons proliferation, while the Partial Nuclear Test Ban Treaty (1963) constrained all nuclear testing to nmperialist drilling practice for example drilling nuclear explosion in inspect from the ground to address concerns regarding contamination of the atmosphere by nuclear fallout.
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