15-10-2010, 03:39 PM
[attachment=6188]
[attachment=6193]
NUCLEAR ENERGY
or
Mass and energy
Einstein suggested that mass and energy are related by E=mc2 (c = 3.0 x 108 m/s)
E: energy, m: mass, c: speed of light
Converting the mass of one penny could
provide the entire energy requirements for 700 people for one year
Power a space heater for 7000 years
That’s about $3 million worth of electricity
Because mass and energy are related the law of conservation of energy and law of conservation of mass can be combined into the Law of Conservation of Mass - Energy
An induced fission reaction. A slow-moving neutron is absorbed by the nucleus of a uranium-235 atom, which in turn splits into fast-moving lighter elements (fission products) and releases three free neutrons.
In nuclear physics and nuclear chemistry,nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing free neutronsand photons (in the form of gamma rays), as well. Fission of heavy elements is anexothermic reaction which can release large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk material where fission takes place). For fission to produce energy, the totalbinding energy of the resulting elements has to be lower than that of the starting element. Fission is a form of nuclear transmutationbecause the resulting fragments are not the same element as the original atom.
[attachment=6193]
NUCLEAR ENERGY
or
Mass and energy
Einstein suggested that mass and energy are related by E=mc2 (c = 3.0 x 108 m/s)
E: energy, m: mass, c: speed of light
Converting the mass of one penny could
provide the entire energy requirements for 700 people for one year
Power a space heater for 7000 years
That’s about $3 million worth of electricity
Because mass and energy are related the law of conservation of energy and law of conservation of mass can be combined into the Law of Conservation of Mass - Energy
An induced fission reaction. A slow-moving neutron is absorbed by the nucleus of a uranium-235 atom, which in turn splits into fast-moving lighter elements (fission products) and releases three free neutrons.
In nuclear physics and nuclear chemistry,nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing free neutronsand photons (in the form of gamma rays), as well. Fission of heavy elements is anexothermic reaction which can release large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk material where fission takes place). For fission to produce energy, the totalbinding energy of the resulting elements has to be lower than that of the starting element. Fission is a form of nuclear transmutationbecause the resulting fragments are not the same element as the original atom.
