something about atomic bomb

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The Atomic Bomb and its Destructive Power

An Atomic Bomb is a very powerful explosive device that entails fission of enriched Uranium or Plutonium nuclei in a chain reaction . The power of the explosion is measured in terms of the number of tons of TNT that would have to be exploded to release the same amount of energy . This fission reaction cannot be sustained unless a specific amount of plutonium or uranium , known as the critical mass , is

present . When this specific amount is present , then the number of neutrons being produced by the fission of the nuclei will exceed the number of neutrons that leave the surface of the material . This results in a chain reaction which ultimately leads to an explosion (Atomic Bomb

The nuclear device or Atomic Bomb consists of several less than critical mass parts that are separated by lead walls . Moreover , all these portions of nuclear fuel together exceed the required critical mass . At the time of detonation , either a chemical or mechanical device is set off that causes the various sub critical mass portions of Uranium or Plutonium to combine . Subsequently , the emitted neutron density is sufficient to set off a nuclear fission reaction releases more neutrons this process continues until the fissile material is exhausted or is dispersed (Atomic Bomb

Such a nuclear fission reaction gives rise to an enormous amount of energy , which is mainly in the form of extreme heat . In addition , this explosion generates a huge shock wave , flash burns , high winds and radiation consisting of neutrons and gamma rays or very short wavelength light . This radiation is fatal to living matter and makes the soil and water unusable (Atomic Bomb

The neutrons and gamma rays released during an atomic bomb explosion cause extreme harm to living tissue and constitute a prime cause for cancer . The surrounding area of a nuclear explosion becomes unusable due to contamination with radioactive fission products . A portion of these radioactive products reach the upper atmosphere either as dust or a gas and thereafter reach the site of explosion as radioactive fallout , which continues to decay over a period of time (Atomic Bomb

Amongst nuclear weapons , the Atomic bombs have the dubious distinction of being the first to be developed , tested and deployed . Towards the end of the 1930 's physicists belonging to Europe and the USA became convinced that it would be possible to create a truly powerful explosive device that was based on the fission of uranium . In August 1939 Albert Einstein wrote to the US President Franklin D . Roosevelt a letter that gave particulars of this process and the danger that could be posed to the Allies if such an explosive device were to be created by the Axis Powers . The President took cognizance of this warning and initiated the Manhattan Project in 1942 , in to invent such an explosive device The Manhattan Project team led by U .S...