Points: Sources of energy — Crises due to limited stock — Alternative sources to be explored.
No work is possible without energy, and for energy man depends on Nature. We get wood from Nature, with which we make fire. By burning fire we cook food, light lamps, and melt iron. After wood came coal. It is an underground storage of energy. We dig up coal and burn it. Oil also is another source of energy. By burning oil we get heat and light. Petroleum or gas came later on. Our motor cars and aero planes are run by them. Electricity is the widely used form of energy in the modern world. From the rivers we get hydro-electricity.
But the source of energy in Nature — coal or petroleum — is not unlimited, Petroleum may be exhausted within a few decades. Scientists are warning us that mankind may soon face energy crisis. That is why people are seeking alternative sources of energy like nuclear energy and solar energy.
Solar energy has an unlimited supply. In a tropical country like India, solar energy has a great future. Indian agriculture may be revolutionized if solar energy be available to our peasants. The initial cost of installing the apparatus is still heavy. If that could be reduced, our energy crisis would have been solved for good.
No work is possible without energy, and for energy man depends on Nature. We get wood from Nature, with which we make fire. By burning fire we cook food, light lamps, and melt iron. After wood came coal. It is an underground storage of energy. We dig up coal and burn it. Oil also is another source of energy. By burning oil we get heat and light. Petroleum or gas came later on. Our motor cars and aero planes are run by them. Electricity is the widely used form of energy in the modern world. From the rivers we get hydro-electricity.
But the source of energy in Nature — coal or petroleum — is not unlimited, Petroleum may be exhausted within a few decades. Scientists are warning us that mankind may soon face energy crisis. That is why people are seeking alternative sources of energy like nuclear energy and solar energy.
Solar energy has an unlimited supply. In a tropical country like India, solar energy has a great future. Indian agriculture may be revolutionized if solar energy be available to our peasants. The initial cost of installing the apparatus is still heavy. If that could be reduced, our energy crisis would have been solved for good.
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