An overview of the development of the atomic bomb

Areas still controlled by Japan in white and green included Korea, Taiwan, Indochinaand much of Chinaincluding most of the main cities, and the Dutch East Indies.

An overview of the development of the atomic bomb

Nuclear weapon design The Trinity test of the Manhattan Project was the first detonation of a nuclear weapon, which lead J. Robert Oppenheimer to recall verses from the Hindu scripture Bhagavad Gita: Weapons whose explosive output is exclusively from fission reactions are commonly referred to as atomic bombs or atom bombs abbreviated as A-bombs.

This has long been noted as something of a misnomeras their energy comes from the nucleus of the atom, just as it does with fusion weapons.

In fission weapons, a mass of fissile material enriched uranium or plutonium is forced into supercriticality —allowing an exponential growth of nuclear chain reactions —either by shooting one piece of sub-critical material into another the "gun" method or by compressing using explosive lenses a sub-critical sphere of material using chemical explosives to many times its original density the "implosion" method.

The latter approach is considered more sophisticated than the former, and only the latter approach can be used if the fissile material is plutonium.

The amount of energy released by fission bombs can range from the equivalent of just under a ton to upwards oftons kilotons of TNT 4. Many fission products are either highly radioactive but short-lived or moderately radioactive but long-livedand as such, they are a serious form of radioactive contamination if not fully contained.

Fission products are the principal radioactive component of nuclear fallout. The most commonly used fissile materials for nuclear weapons applications have been uranium and plutonium Less commonly used has been uranium Neptunium and some isotopes of americium may be usable for nuclear explosives as well, but it is not clear that this has ever been implemented, and their plausible use in nuclear weapons is a matter of dispute.

Thermonuclear weapon The basics of the Teller—Ulam design for a hydrogen bomb: The other basic type of nuclear weapon produces a large proportion of its energy in nuclear fusion reactions. Such fusion weapons are generally referred to as thermonuclear weapons or more colloquially as hydrogen bombs abbreviated as H-bombsas they rely on fusion reactions between isotopes of hydrogen deuterium and tritium.

All such weapons derive a significant portion of their energy from fission reactions used to "trigger" fusion reactions, and fusion reactions can themselves trigger additional fission reactions.

Whether India has detonated a "true" multi-staged thermonuclear weapon is controversial.

The Manhattan Project [] By April, Japan lay open to direct assault by land as well as air and sea.
Rosenberg Trial, Case Overview By April, Japan lay open to direct assault by land as well as air and sea.
Free Website Builder Software Even though published accounts of the scientific breakthrough prevented keeping this knowledge secret, many scientists feared the Nazis might attempt to manipulate such an advancement to further their attack on the nations of Europe. Hungarian scientist and refugee Leo Szilard shared this apprehension — believing the nuclear energy released during fission could be harnessed to produce bombs capable of severe destruction.
Nuclear weapon - Wikipedia Borthwick, Pacific Century, p.
The properties and effects of atomic bombs The S-1 Committee held its meeting on 18 December "pervaded by an atmosphere of enthusiasm and urgency" [16] in the wake of the attack on Pearl Harbor and the subsequent United States declaration of war upon Japan and then on Germany.

Almost all of the nuclear weapons deployed today use the thermonuclear design because it is more efficient. In the Teller-Ulam designwhich accounts for all multi-megaton yield hydrogen bombs, this is accomplished by placing a fission bomb and fusion fuel tritiumdeuteriumor lithium deuteride in proximity within a special, radiation-reflecting container.

When the fission bomb is detonated, gamma rays and X-rays emitted first compress the fusion fuel, then heat it to thermonuclear temperatures. The ensuing fusion reaction creates enormous numbers of high-speed neutronswhich can then induce fission in materials not normally prone to it, such as depleted uranium.

Julius Rosenberg was arrested in July , a few weeks after the Korean War began. He was executed, along with his wife, Ethel, on June 19, , a few weeks before it ended. The legal charge of which the Rosenbergs were convicted was vague: “Conspiracy to Commit Espionage.” But in a practical sense they were held accountable for giving the so-called “secret of the atomic. Aug 13,  · Through multi-media presentations, one learns a great deal about the development of the atomic bomb. One learns how it was conceived, personnel gathered to develop it, and facilities built to manufacture it. Declassified documents provide an insight to the current thinking at the time the bomb was Location: Central Ave, Los Alamos, NM The world's first nuclear weapons explosion on July 16, , in New Mexico, when the United States tested its first nuclear bomb. Not three weeks later, the world changed. On August 6, , the United States dropped an atomic bomb .

Each of these components is known as a "stage", with the fission bomb as the "primary" and the fusion capsule as the "secondary". In large, megaton-range hydrogen bombs, about half of the yield comes from the final fissioning of depleted uranium.

This technique can be used to construct thermonuclear weapons of arbitrarily large yield, in contrast to fission bombs, which are limited in their explosive force.Jul 28,  · Overview; Overview and History locals who have been affected by the U.S. government's atomic bomb test.

Atomic bomb | History, Properties, Proliferation, & Facts |

damage that resulted from the development and testing of the first atomic bomb. This section is for attacking a planet from orbit.

An overview of the development of the atomic bomb

The next section is for attacking a planet by ground assault.. After all the interplanetary battles are over, and the defender's space fleets have been reduced to ionized plasma or fled in panic, the pendultimate stage is entered.

the war department in the Manhattan Project to develop an atomic bomb. After four years of intensive and ever-mounting research and development efforts, an atomic device was set off on July 16, , in a desert area near Alamogordo, New Mexico, generating an explosive power equivalent to that of more.

A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb).Both bomb types release large quantities of energy from relatively small amounts of matter.

The first test of a fission ("atomic") bomb released an amount of energy approximately equal to. Lesson Overview. Students will research how the development of the atomic bomb affected people in World War II, participate in a debate about the bomb's use, and investigate how it has affected people's lives since SAMPLE PREPARATION FOR FAAS Nabil Ramadan Bader.

atomic bomb | History, Properties, Proliferation, & Facts |