History The discovery of Atomic Bomb

 

In 1902, Marie and Pierre Curie isolate radioactive metal called radium

 

In 1905, Albert Einstein formulated the Special Theory of Relativity. According to this theory, mass can be considered as another form of energy. According to Einstein, if somehow we can turn mass into energy, it will be possible to "liberate" a large amount of energy. Over the next decade, great strides taken by Ernest Rutherford and Niels Bohr describe atomic structure is more appropriate. They said, from the positively charged nucleus and negatively charged electrons that revolve around the core. That is the core, the scientists concluded, that must be broken or "explode" if the atomic energy will be released.

In 1934, Italy's Enrico Fermi destroy heavy atoms with a spray of neutrons. But he did not realize that he had obtained nuclear fission.

In December 1938, though, Otto Hahn and Fritz Strassman in Berlin did a similar experiment with uranium and a world achievement. They have produced nuclear fission, they have split the atom that is 33 years after Einstein said it could be that the mass turned into energy.
On August 2, 1939, Albert Einstein wrote a letter to President 

 

 On August 2, 1939, Albert Einstein wrote a letter to American President, Franklin D. Roosevelt. Over the last four months, he has made ​​possible through the work of Joliot in France as well as Fermi and Szilard in America that allows set of nuclear reactions in a large mass of uranium. .. And this is also a new phenomenon that will lead to the construction of bombs ... A single bomb of this type, carried by boat or exploded in a port, might very well destroy the whole port together with some surrounding areas. He urged Roosevelt to start a nuclear program without keterlambatan.Dalam 1 year later Einstein deplored the role he played in the development of such a destructive weapon: "I made ​​one big mistake in my life," he said to Linus Pauling, another prominent scientist, "when I signed letter to President Roosevelt recommending that atom bombs be made. "

 
In December 1942 at the University of Chicago, the Italian physicist Enrico Fermi succeeded in producing the first nuclear chain reaction. This is done by setting the natural uranium lumps distributed within a large stack of pure graphite, a form of carbon. In nuclear reactors, graphite moderator serves to slow the neutrons.

In August 1942, during World War II, the United States established the Project Manhattan.Tujuan of this project is to develop, build, and test the bomb. Many prominent American scientists, including physicist Enrico Fermi and J. Robert Oppenheimer and Harold Urey chemistry, associated with the project, led by an engineer with the U.S. Army, Brigadier General Leslie R. Groves.

 

On May 31, 1945, sixteen people met at the office of Secretary of War Henry L. Stimson. Sixteen people are there to make decisions about the average American weapons have not heard, the atomic bomb. They choose a target future for "The Bomb." What are they talking about is "the new human relationship with the universe," as said by Stimson. The Secretary seems to say, are the most critical turning point in all of recorded history.

 

 On July 16, 1945, the first atomic bomb or A-bomb, tested at Alamogordo, New Mexico.

Pada tanggal 6 Agustus 1945, Enola Gay, pesawat Amerika, menjatuhkan bom atom pertama yang pernah digunakan dalam peperangan di Hiroshima, Jepang, akhirnya menewaskan lebih dari 140.000 orang. Pada tanggal 9 Agustus 1945, Amerika Serikat menjatuhkan bom atom kedua, kali ini di kota Jepang Nagasaki. Walaupun meleset satu mil dari sasaran, tapi membunuh 75.000 orang.

On August 29, 1949, the Soviet Union's first atomic bomb test.

On 1 November, 1952 trial, a full-scale work carried out by the United States with fusion-type device.

In 1946, the Atomic Energy Commission (AEC), civilian agency of the United States government, established the Atomic Energy Act to manage and regulate the production and use of atomic power. Among the main programs of this new commission are:
• Production of physical materials bombs
• Prevention of accidents
• The study of biology, health, metallurgy and production of electricity from the atom, the study in the production of nuclear aircraft
• declassification of data on atomic energy.

Title: History The discovery of Atomic Bomb
Posted by:Riszky Nurseno
Published :2011-04-26T01:37:00-07:00
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History The discovery of Atomic Bomb