The Nuclear Bomb

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The Nuclear Bomb Dr. Andrew Futter Department of Politics and International Relations www.le.ac.uk What is a Nuclear Bomb? • Why it goes bang: – Draws on the power stored in the atom – Certain isotopes will “fission” – A critical mass will become self- sustaining – Uranium 235 and plutonium 239 – Atom bombs and hydrogen bombs • What it does: – (1) Significant damage and destruction is caused by the blast – (2) Radiation poisoning and other nasty illnesses are caused by the fallout after the explosion How powerful are nuclear bombs? • Hiroshima and Nagasaki – First and only nuclear use in 1945 – 16-20kt blasts – Estimated casualties: ~200,000 • The Tsar Bomba – Tested in 1961 by the Soviet Union – 57 megaton blast – 5km fireball – 3rd degree burns at 60km • http://nuclearsecrecy.com/nu kemap/ Who Has Nuclear Weapons? First Nuclear Test Estimated Nuclear Weapons The United States 1945 7,300 Soviet Union/ Russia 1949 8,000 The UK 1952 225 France 1960 300 China 1964 250 India 1998 110 Pakistan 1998 80 North Korea 2006 Less than 10 Israel 1979 80 TOTAL ~16,300 The UK and Nuclear Weapons • Four nuclear powered submarines – Each boat can carry 16 missiles – Each missile can carry up to 14 warheads – Each warhead can be up to 100kt yield • One of these submarines is on patrol at all times ready to fire • A decision to replace this will be made in 2016 Our Nuclear Future… • The nuclear disarmament movement is at its strongest for many years • But - there are still more than enough nukes to destroy the planet • Many impediments and problems remain – Iran and nuclear terrorism – Spread of nuclear power • As long as nuclear weapons exist there is always a chance they might be used .

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