why was nuclear energy created?
157316
Unfortunately, it was created to satisfy the needs of the military for a weapon so awesome it would frighten the axis powers into surrendering in World War II.  After the war was over, since the genie could not be stuffed back into its bottle, science found peaceful uses, such as atomic power plants and nuclear medicine.  Now we even have such things as an atomic clock, which uses the breakdown of a radioactive material to keep time very precisely.  I hope more peaceful uses continue to be found, such as powering spaceships to go exploring.
609686
I think that nuclear energy source is a viable energy source as long as we do everything we can to make it as safe as possible.  If we do nothing to find new energy sources our economy and our way of life can deteriorate.
401394
lets start with advantages.......\n   for power generation\n   alternate to non-renewable energy sources\n   \ndisadvantages....\n  expensive\n  harmful to environment(radiation)\n  risky\n\nenergy is produced in nuclear reactor by fission mechanism......
3398
the nuclear fision is mainly carried out in an atomic reactor. It is an process in which a nucleus of heavy atoms like Uranium splits into two nuclei of smaller masses and a large amount of energy is produced. This energy is known as nuclear energy.\nThe Nuclear Fusion is the process in which the nuclei of two different elements fuse or combine to form one and huge amount of energy is produced. This process takes place in Sun.
1093288
well science & technology has so many things to talk 'bout ,theres no specific thing.......regarding nuclear technology i feel itz a really good move as it causes no pollution ,renewable ,& will help in consrvation of depletable energy resources......we will benifit greatly 4rm it once itz developed to itz full potential......only problem is regarding safety as itz very dangerous if something goes wrong ........but if we are able to find a way 4r this .......then our energy problems will be solved 4rever
119700
An induced nuclear fission event. A thermal (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 free neutrons. The particular elements and number of neutrons produced by each single fission event are random.Nuclear fission is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products, and usually some by-product particles. Hence, fission is a form of elemental transmutation. The by-products include free neutrons, photons usually in the form gamma rays, and other nuclear fragments such as beta particles and alpha particles. Fission of heavy elements is an exothermic reaction and can release substantial amounts of useful energy both as gamma rays and as kinetic energy of the fragments.\n\nNuclear fission is used to produce energy for nuclear power and to drive explosion of nuclear weapons. Fission is useful as a power source because some materials, called nuclear fuels, both generate neutrons as part of the fission process and also undergo triggered fission when impacted by a free neutron. Nuclear fuels can be part of a self-sustaining chain reaction that releases energy at a controlled rate in a nuclear reactor or a very rapid uncontrolled rate in a nuclear weapon.\n\nThe amount of free energy contained in nuclear fuel is millions of times the amount of energy contained in a similar mass of chemical fuel such as gasoline, making nuclear fission a very tempting source of energy; however, the waste products of nuclear fission are highly radioactive and remain so for millennia, giving rise to a nuclear waste problem. Concerns over nuclear waste accumulation and over the immense destructive potential of nuclear weapons counterbalance the desirable qualities of fission as an energy source, and give rise to intense ongoing political debate over nuclear power.
585929
If it were not for concerns about the health effects of\nradiation, nuclear energy would have developed quite\ndifferently.\nRadiation is not new. Although it was discovered and\nnamed as recently as 1896, we and our ancestors have\nlived with it since the beginning of time. The earth is\nnaturally radioactive, so is the air we breathe, the\nfood we eat and the ground we stand on. It is only\nwhen we are subjected to relatively large doses of\nradiation that it becomes a danger to life or health.\nModern science has allowed us to develop safe ways\nof using radiation, and of exploiting its properties for\nthe benefit of mankind. Many valuable applications\nhave been developed:\n􀁺 nuclear medicine, especially the use of X-rays\n􀁺 use of radiation to develop drugs for people with\ndiabetes, arthritis or high blood pressure\ntreatment of car tyres with radioactive materials to\nmake them more durable and puncture-resistant\nradioactive sources in photocopiers to stop the\npaper sticking together.\nThese are just a few examples. We benefit from a\nlarge range of products and services made possible by\nradioactive materials, often without even realising it.\nEverything in the world, from the air we breathe to\nthe cars we drive, is made up of atoms\nSome atoms are ‘stable’ – an ordinary carbon atom,\nwith six protons and six neutrons, will stay that way\nuntil the end of the universe unless something\ndramatic happens to it, such as being absorbed by the\nsun. Others are unstable – for example, their nuclei\nmay be too big to hold together – so they shake off\nparticles and surplus energy from their nucleus until\nthey become stable. The process of shaking off these\nparticles and energy is called ‘radioactivity’, and the\nparticles and energy which are released are known as\n‘nuclear radiation’. The process is often called\n‘radioactive decay’, since over time the radioactive\nmaterial breaks up and changes into other more stable\natoms, sometimes through several radioactive\nintermediate stages. The process can take fractions of\na second or billions of years depending on the\nradioactive material involved, but in each case the\nradioactivity of the material falls steadily.\nThere are different types of radiation, and not all\ninvolve radioactive decay. The type of radiation we\nare looking at in this booklet is ‘ionising radiation’,\nand includes artificially made X-rays (which do not\narise from radioactive decay). When this type of\nradiation bumps into other matter, it produces\nelectrically charged particles, known as ‘ions’.\nIonisation causes chemical changes in materials, and\ncan affect our bodies as well as the things around us.\nIn high quantities, ionising radiation can damage\nliving tissue and even destroy human cells. This can\nbe beneficial in some circumstances – for example,\nradiotherapy is used in the treatment of cancer, the\nradiation being used to kill cancerous cells, leaving\nother cells nearby relatively unharmed. In this sense,\nradiation is rather like a surgeon’s scalpel. Usedcarefully it can provide many benefits and can enable\nus to live longer, healthier, more comfortable lives,\nalthough it can be dangerous if misused.\nWhen we refer elsewhere in this booklet to ‘radiation’\nwe mean ionising radiation. However, there are nonionising\nradiations, such as low energy\nelectromagnetic radiation (which includes light, infrared,\nradio waves and electrical and magnetic fields\nfrom power pylons), which are not normally\ndangerous.\nThere are several types of ionising radiation, of which\nthe most important are:\n􀁺 α (alpha): streams of atomic particles (helium\nnuclei) made up of two protons and two neutrons\nwith a positive charge (+2). By atomic standards\nthese are quite big chunks of matter, so they are\nvery easily stopped. They cannot pass through\npaper, for example, or through the dead outer layer\nof our skin. However, if materials emitting alpha
430638
Energy development is the ongoing effort to provide abundant and accessible energy, through knowledge, skills and constructions. When harnessing energy from primary energy sources and converting them into ever more convenient secondary energy forms, such as electrical energy and cleaner fuels, both quantity (harnessing more primary energy) and quality (more efficient conversion to secondary energy) are important.\n\nFuture energy development faces great challenges due to an increasing world population, demands for higher standards of living, demands for less pollution and a much-discussed end to fossil fuels. Without energy, the world's entire industrialized infrastructure would collapse; agriculture, transportation, waste collection, information technology, communications and much of the prerequisites that a developed nation takes for granted. A shortage of the energy needed to sustain this infrastructure could lead to a Malthusian catastrophe.\nEarth by night. Many parts of the world will demand energy as their economies develop.\nEnlarge\nEarth by night. Many parts of the world will demand energy as their economies develop.\n[edit]\n\nGeneral considerations\n\nAll the energy we consume is generated by using the four fundamental interactions of nature: gravity, electromagnetism, the weak nuclear force and the strong nuclear force to create work. Fission energy and fusion energy are generated by electromagnetism and the strong nuclear force. In both cases the weak nuclear force provides significant energy through decay reactions immediately after (and during) the primary reactions. Most forms of terrestrial energy can be traced back to fusion reaction inside the sun, with the exception of tidal power, geothermal energy and nuclear power. Geothermal energy is believed to be generated primarily by radioactive decay inside the Earth[1]. Radioactive decay energy is generated by both the weak nuclear force and electromagnetic force. Tidal energy comes from the gravitational potential energy of the Earth/Moon system.\n\nMost human energy sources today use energy from sunlight, either directly like solar cells or in stored forms like fossil fuels. Once the stored forms are used up (assuming no contribution from the three previous energy sources and no energy from space exploration) then the long-term energy usage of humanity is limited to that from the sunlight falling on Earth. The total energy consumption of humanity today is equivalent to about 0.1-0.01% of that. But humanity cannot exploit most of this energy since it also provides the energy for almost all other lifeforms and drives the weather cycle[2][3].\nU.S. energy consumption by sectors.\nEnlarge\nU.S. energy consumption by sectors.\n\nWorld energy production by source: Oil 40%, natural gas 22.5%, coal 23.3%, hydroelectric 7.0%, nuclear 6.5%, biomass and other 0.7%[4]. In the U.S., transportation accounted for 28% of all energy use and 70% of petroleum use in 2001; 97% of transportation fuel was petroleum[5].\n\nThe United Nations projects that world population will stabilize in 2075 at nine billion due to the demographic transition. Birth rates are now falling in most developing nations and the population would decrease in several developed nations if there was no immigration[6]. Still, economic growth probably requires a continued increase in energy consumption. Since 1970, each 1% increase in the Gross world product has yielded a 0.64% increase in energy consumption[7].\n\nIn geology, resources refer to the amount of a specific substance that may be present in a deposit. This definition does not take into account the economic feasibility of exploitation or the fact that resources may not be recoverable using current technology. Reserves constitute those resources that are recoverable using current technology. They can be recovered economically under current market conditions. This definition takes into account current mining technology and the economics of recovery
1143118
Einstein theorized that energy and matter are interchangeable. He postulated that nuclear fission takes place via chain-reaction and the energy (measured in ergs) produced from the "splitting of atoms" is equal to the atomic mass of an element multiplied by the speed off light squared (mc2). Einstein wasn't thinking of creating a "bomb" when he first developed the theory. Other nuclear physicist came up with the bomb idea. That is why the isotope of the heaviest element (uranium) was used to make an atomic bomb. Also, a small amount of matter is capable of producing a tremendous amount of energy. The testing of the atomic bomb actually proved Einstein's E=mc2 theory.
198314
Now-a-days, nuclear energy means utilizing the process of nuclear fission in order to boil water and turn a turbine in order to generate electricity.\n\nThe pros to this method of energy production are that (by comparison to other [fossil] fuels such a coal, oil, ...) there is much less polution. HOWEVER, the polution that is produced is a really nasty, terrible, deadly type of polutuion which will cause problems for humanity for hundreds of thousands of years to come, unlike coal which just produced a buch of CO2 and soot.\n\nThe cons are that, even though it is rare, there is a possibility for a melt down (or worse) if something should go wrong.  Although in the 50 some-odd years of nuclear energy so far, there have only been a few memorable "disasters" (Cheronoble, 3 mile island), but these disasters have the potential to cause massive problems for many years and hard many more people than another type of energy could.  When was the last time you heard of a hydroelectric plant venting radio active fumes and giving people cancer?\nAnother con to nuclear energy is that it is just a short step away from nuclear weapons.  It doesnt take much for someone with a nuclear reactor to make the jump to nuclear bombs.
531433
Einstein didn't invent the bomb.  Fermi was the first to have a controlled nuclear fission on 12/2/42.  Einstein's energy equation theorized that a tremendous amt of energy would be released when converting mass into energy.\n\nThe US invested tremendous resources, men and material, in the development of a nuclear weapon, as stated above the project was secretly called the Manhattan Project under direction of Scientist Oppenheimer with military oversite by General Groves.  It took 856 days, from the time of the first controlled nuclear fission experiment to the 7/16/45 detonation of the first nuclear explosion at Trinity Test Site in New Mexico.
878404
As a matter of fact, nuclear explosions occur in space all the time, the sun and billions of other stars in the universe are fuelled by the nuclear fusion of hydrogen atoms into helium as we speak. The light  we see from the sun and stars are a result of this nuclear fusion. So  the energy from a man made nuclear bomb would be neglitable
385240
The amount of energy generated by nuclear fission depends on the particular element involved and the preciseness of the split. For example, the splitting of one Uranium-235 atom can produce 200 MeV of energy (equivalent to 3.2 x 10E-11 joules) - while the splitting of a Plutonium-239 atom can create 210 MeV of energy.\n\nA good explanation of nuclear fission can be found in the article I've linked below:
396916
By power, i assume you mean "energy over time"\nWhen an atom such as uranium is 'split' by bombarding the nucleus with high energy neutrons, it forms two nuclei with lower masses than the uranium. There is, however, a mass defect - a "missing mass" that gives rise to an energy output via\nE = mc^2\nBy harnessing this energy, scientists can use it to generate electricity, a bit like in a regular coal-fired power station.\n\nThere! you finally know how to use Einstein's famous equation!!
619518
Every atomic fission releases excess energy in a variety of forms.  That excess energy is trapped by the reactor in the form of heat, which is used to generate steam to drive turbines which generate electricity.
45782
In most electric power plants, water is heated and converted into steam, which drives a turbine-generator to produce electricity. Fossil-fueled power plants produce heat by burning coal, oil, or natural gas. In a nuclear power plant, the fission of Uranium atoms in the reactor provides the heat to produce steam for generating electricity.\n\nHeat is produced in a nuclear reactor when neutrons strike Uranium atoms causing them to fission in a continuous chain reaction. Control elements, which are made of materials that absorb neutrons, are placed among the fuel assemblies. When the control elements, or control rods as they are often called, are pulled out of the core, more neutrons are available and the chain reaction speeds up, producing more heat. When they are inserted into the core, more neutrons are absorbed, and the chain reaction slows or stops, reducing the heat. \n  Most commercial nuclear reactors use ordinary water to remove the heat created by the fission process. These are called light water reactors. The water also serves to slow down, or "moderate" the neutrons. In this type of reactor, the chain reaction will not occur without the water to serve as a moderator.
955821
Basically means that mass can be converted into energy.  You want proof?  Go search "nuclear weapon".