Wednesday, 30 April 2014

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Tuesday, 29 April 2014

FORGING and its Types.... Forging is a process in which material is shaped by the application of localized compressive forces exerted manually or with power hammers, presses or special forging machines. The process may be carried out on materials in either hot or cold state. When forging is done cold, processes are given special names. Therefore, the term forging usually implies hot forging carried...

Sunday, 27 April 2014

TIDAL ENERGY ABSTRACT Twice each day, thanks to a gravitational pull on earth from our rotating moon, the world's oceans produce powerful water currents and rising and falling tides. Humans have studied and exploited the tremendous power of the tides for millennia, including harnessing tidal power in 10th century dams to turn millwheels for grinding flour. Forty years ago, the first...