19
Sep
New Delhi [India] September 19: A few years back, Kolkata Municipal Corporation had a tremendous setback following the collapse of the water supply system as one of the major underground supply lines leaked. It continued over a couple of days as they could not find the source of leakage of an old pipe laying underground. They were grappling with darkness because they had no Geographic Information System (GIS) facilities. Later, imaging of earth enabled them to have a thorough knowledge in underground layout. The system of imaging of the earth is therefore a necessary subject even for our daily existence. Especially, when…