Tuesday, October 29, 2013

The Atomic Bomb





On August 2, 1939, just before the beginning of World War II,Albert Einstein wrote to then President Franklin D. Roosevelt. Einstein and several other scientists told Roosevelt of efforts in Nazi Germany to purify uranium-235, which could be used to build an atomic bomb. It was shortly thereafter that the United States Government began the serious undertaking known then only as "The Manhattan Project." Simply put, the Manhattan Project was committed to expediting research that would produce a viable atomic bomb.

Making Enriched Uranium

The most complicated issue to be addressed in making of an atomic bomb was the production of ample amounts of "enriched" uranium to sustain a chain reaction. At the time, uranium-235 was very hard to extract. In fact, the ratio of conversion from uranium ore to uranium metal is 500:1. Compounding this, the one part of uranium that is finally refined from the ore is over 99% uranium-238, which is practically useless for an atomic bomb. To make the task even more difficult, the useful U-235 and nearly useless U-238 are isotopes, nearly identical in their chemical makeup. No ordinary chemical extraction method could separate them; only mechanical methods could work.
A massive enrichment laboratory/plant was constructed at Oak Ridge, Tennessee. Harold Urey and his colleagues at Columbia University devised an extraction system that worked on the principle of gaseous diffusion, and Ernest Lawrence(inventor of the Cyclotron) at the University of California in Berkeley implemented a process involving magnetic separation of the two isotopes.
Next, a gas centrifuge was used to further separate the lighter U-235 from the heavier, non-fissionable U-238. Once all of these procedures had been completed, all that needed to be done was to put to the test the entire concept behind atomic fission splitting the atom," in layman's terms.

Robert Oppenheimer - Manhattan Project

Over the course of six years, from 1939 to 1945, more than $2 billion was spent during the history of the Manhattan Project. The formulas for refining uranium and putting together a working atomic bomb were created and seen to their logical ends by some of the greatest minds of our time. Chief among the people who unleashed the power of the atom was Robert Oppenheimer, who oversaw the project from conception to completion.

Testing The Gadget aka Atomic Bomb

Finally, the day came when all at Los Alamos would find out if "The Gadget" (code-named as such during its development) was going to be the colossal dud of the century or perhaps an end to the war. It all came down to a fateful morning in midsummer, 1945.
At 5:29:45 (Mountain War Time) on July 16, 1945, in a white blaze that stretched from the basin of the Jemez Mountains in northern New Mexico to the still-dark skies, "The Gadget" ushered in the Atomic Age. The light of the explosion then turned orange as the atomic fireball began shooting upwards at 360 feet per second, reddening and pulsing as it cooled. The characteristic mushroom cloud of radioactive vapor materialized at 30,000 feet. Beneath the cloud, all that remained of the soil at the blast site were fragments of jade green radioactive glass created by the heat of the reaction.
The brilliant light from the detonation pierced the early morning skies with such intensity that residents from a faraway neighboring community would swear that the sun came up twice that day. Even more astonishing is that a blind girl saw the flash 120 miles away.
Upon witnessing the explosion, its creators had mixed reactions. Isidor Rabi felt that the equilibrium in nature had been upset as if humankind had become a threat to the world it inhabited.

After viewing the results several participants signed petitions against loosing the monster they had created, but their protests fell on deaf ears. The Jornada del Muerto of New Mexico would not be the last site on planet Earth to experience an atomic explosion.

Anti Nuke Campaigns.

Greenpeace has always fought  and continues to fight vigorously against nuclear power because it is an unacceptable risk to the environment and to humanity. The only solution is to halt the expansion of all nuclear power, and for the shutdown of existing plants.

Nastya, from Belarus was only three years old when she was diagnosed with cancer of the uterus and lungs. According to local doctors the region has seen a huge increase in childhood cancer cases since the Chernobyl disaster.
The Campaign for Nuclear Disarmament is an organisation that advocates unilateral nuclear disarmament by the United Kingdom, international nuclear disarmament and tighter international arms regulation through agreements such as the Nuclear Non-Proliferation Treaty. It opposes military action that may result in the use of nuclear, chemical or biological weapons and the building of nuclear power stations in the UK.
CND was formed in 1957 and since that time has periodically been at the forefront of the peace movement in the UK. It claims to be Europe's largest single-issue peace campaign. Between 1959 and 1965 it organised the Aldermaston March, which was held over the Easter weekend from the Atomic Weapons Establishment near Aldermaston to Trafalgar Square, London. The first Aldermaston March in 1958 went the other way (from London to Aldermaston) and was organised by the Direct Action Committee.
CND's current strategic objectives are:
·        The elimination of British nuclear weapons and global abolition of nuclear weapons. It campaigns for the cancellation of Trident by the British government and against the deployment of nuclear weapons in Britain.
·        The abolition of weapons of mass destruction, in particular chemical and biological weapons. CND wants a ban on the manufacture, testing and use of depleted uranium weapons
·        A nuclear-free, less militarised and more secure Europe. It supports the Organisation for Security and Co-operation in Europe (OSCE). It opposes US military bases and nuclear weapons in Europe and British membership of NATO.
·        The closure of the nuclear power industry.
In recent years CND has extended its campaigns to include opposition to U.S. and British policy in the Middle East, rather as it broadened its anti-nuclear campaigns in the 1960s to include opposition to the Vietnam War. In collaboration with the Stop the War Coalition and the Muslim Association of Britain, CND has organised anti-war marches under the slogan "Don't Attack Iraq", including protests on September 28, 2002 and February 15, 2003. It also organised a vigil for the victims of the 2005 London bombings.
CND campaigns against the Trident missile. In March 2007 it organised a rally in Parliament Square to coincide with the Commons motion to renew the weapons system. The rally was attended by over 1,000 people. It was addressed by Labour MPs Jon TrickettEmily ThornberryJohn McDonnellMichael MeacherDiane Abbott and Jeremy Corbyn, and Elfyn Llwyd of Plaid Cymru and Angus MacNeil of the Scottish National Party. In the House of Commons, 161 MPs (88 of them Labour) voted against the renewal of Trident and the Government motion was carried only with the support of Conservatives.
In 2006 CND launched a campaign against nuclear power. Its membership, which had fallen to 32,000 from a peak of 110,000 in 1983, increased threefold after Prime Minister Tony Blair made a commitment to nuclear energy.
The anti-nuclear movement is a social movement that opposes various nuclear technologies. Some direct action groups, environmental groups, and professional organisations have identified themselves with the movement at the local, national, and international level. Major anti-nuclear groups include Campaign for Nuclear Disarmament, Friends of the Earth, Greenpeace, International Physicians for the Prevention of Nuclear War, and theNuclear Information and Resource Service. The initial objective of the movement was nuclear disarmament, though some of the focus has shifted to include opposition to the use of nuclear power.
There have been many large anti-nuclear demonstrations and protests. A protest against nuclear power occurred in July 1977 in Bilbao, Spain, with up to 200,000 people in attendance. Following the Three Mile Island accident in 1979, an anti-nuclear protest was held in New York City, involving 200,000 people. In 1981, Germany's largest anti-nuclear power demonstration took place to protest against the Brokdorf Nuclear Power Plant west of Hamburg; some 100,000 people came face to face with 10,000 police officers. The largest anti-nuclear protest was held on June 12, 1982, when one million people demonstrated in New York City against nuclear weapons. A 1983 nuclear weapons protest in West Berlin had about 600,000 participants. In May 1986, following the Chernobyl disaster, an estimated 150,000 to 200,000 people marched in Rome to protest against the Italian nuclear program.
For many years after the 1986 Chernobyl disaster nuclear power was off the policy agenda in most countries, and the anti-nuclear power movement seemed to have won its case. Some anti-nuclear groups disbanded. In the 2000s, however, following public relations activities by the nuclear industry, advances in nuclear reactor designs, and concerns about climate change, nuclear power issues came back into energy policy discussions in some countries. The 2011 Japanese nuclear accidents subsequently undermined the nuclear power industry's proposed renaissance and revived anti-nuclear passions worldwide, putting governments on the defensive. As of 2011, countries such as Australia, Austria, Denmark,Greece, Ireland, Italy, Latvia, Lichtenstein, Luxembourg, Malta, Portugal, Israel, Malaysia, New Zealand, and Norway remain opposed to nuclear power. Germany and Switzerland are phasing-out nuclear power.

Two survivors, Ms. Setsuko Thurlow and Mr. Yasuaki Yamashita, share their reflections, remembrances and personal testimonies with Truman’s grandson, Mr. Clifton Truman Daniel and Peace Boat Executive Committee Member Mr. Akira Kawasaki. Mr. Daniel will recount his own journey toward understanding this event, including encounters with survivors during a recent trip to Hiroshima and Nagasaki, while Mr. Kawasaki will introduce the work that Peace Boat has been doing to help survivors share their stories worldwide. This is the link to the video. Link http://www.japansociety.org/webcast/special-program-for-high-school-students

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