Benefits of radiations can be seen in the use of x-rays and treatment of cancer, whereas non-medical use of radiation can be seen in industries, for detection of leaks and welding faults in different metal mediums. Also for non-medical use, the rays are used for inspection on the production line to check emptiness or the thickness of materials like aluminum. (Cheng et al, 2000).Apart from nuclear power, there are other ways to produce energy like hydroelectric, fossil fuel burning, solar and wind power. All these methods have a lot of advantages and disadvantages. Some of them will be depicted here. Hydroelectric power is free of cost, as water flow is easily available all around the world but the drawback is the amount of expenditure involved to build dams and huge water turbines. Furthermore, the environmental hazard for hydroelectric power generation is the disturbance of the ecological habitat of the aquatic life in the region. Fossil fuel is the best form of energy as it provides predictable and a constant power source but the major drawback falters this form of energy. It is the fossil fuel that is not a reusable or renewable source and is becoming scarce from the world at a very rapid rate. Solar and wind power both have almost the same kind of advantage and disadvantage. The setup for both is very expensive and is unpredictable in nature but the best advantage of these sources of power is the free and unlimited availability of power till the sun comes out and the wind blows. Moreover, fossil burning emits huge amount of carbon monoxide which in turn gives way to the greenhouse effect, whereas wind and solar setups disturb the natural landscape of the area where they are installed (Nicolai, 2007). Many complaints have been lodged about the whirly sound, which the wind farms make near the villages or residential areas. These complaints are properly document in researches that have been carried out by various environmentalists.Diffraction is defined as the apparent bending of light waves around obstacles to spread in different direction to give different effects. Life will be unimaginable without this natural phenomenon. The beauty of nature will, for instance, will not be seen as the sunlight will not be diffracted when in lands on the natural scenery. Also various real life applications involve diffraction. If diffraction was not available as a phenomenon, at present we would have been deprived of using CDs and DVDs, would have no
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