3. What is Energy? Energy, capacity of matter to perform work as the result of its motion or its position in relation to forces acting on it.
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17. Richard E. Smalley (1943-2005) Nobel Prize Winner in . 1996 Major Contribution in Bulkyballs Used in Nanosolar cell Nobel Prize in Physics 1921 for his discovery of the law of the “ photoelectric effect " Albert Einstein
36. Diagram of a nano solar cell Nanoparticles are perfect to absorb solar energy and they can be used in very thin layers on conventional metals to absorb incident solar energy
39. MICROWAVE TOWER Future says, trapping energy from the sun in the space itself and generating electrical energy from it would be easier using microwave signals and it will be efficient also.
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49. Windmill A windmill is a machine that converts wind into useful energy. Windmills consist of a horizontal wind shaft that protrudes from the upper portion of the mill tower. Four to eight wind sails radiate from the wind shaft. The wood frames of the sails are either covered with canvas or fitted with wood shutters. The fantail automatically rotates the sails into the wind.
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52. The RE-power 5M, the largest wind turbine in the world when it was constructed in 2004, stands 183 m (600 ft) high with a rotor that is 126 m (413 ft) in diameter. This prototype was first assembled on land in Germany but was designed for offshore wind farms.
53. Water- pumping Windmill in Spring. The blades are cut at an oblique angle to increase the efficiency.
