Monthly Archives: February 2008

Rural-Urban Links in India

 Health and Education: It is now commonplace for rural residents to travel to the nearest town to access specialised healthcare and higher education. As government continues to be fraught with bureaucratic procedures and inefficient services, more and more people are … Continue reading

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Fossil Fuels:Origin, Statistics and Implications

Origin According to the biogenic theory, petroleum is formed from the preserved remains of prehistoric zooplankton and algae which have been settled to the sea (or lake) bottom in large quantities under anoxic conditions. Over geological time this organic matter, … Continue reading

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Fossil Fuels:Overview and Impact

Fossil fuels or mineral fuels are fossil source fuels, that is, hydrocarbons found within the top layer of the earth’s crust. They range from very volatile materials with low carbon:hydrogen ratios like methane, to liquid petroleum to nonvolatile materials composed … Continue reading

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History of Remote Sensing: Multispectral Images

A significant advance in sensor technology stemmed from subdividing spectral ranges of radiation into bands (intervals of continuous wavelengths), allowing sensors that produce several bands of differing wavelengths to form multispectral images. This concept should be familiar to anyone who … Continue reading

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