Thursday, January 27, 2011

the electricity

the discoveries and inventions of science and technology have made a revolution in human civilization is one of the enigmatic,perhaps the most usefu,gifts of science.it can be generated with the helps of water power,wind power and machine power.if it is cheaply produced with the help of water power,it is called hydro-electricity.electricity can be static and current.the electricity that cannot be transferred from one object to another is called statice,and current electricity can be transferre.we use current electricity.
electricity is widely used for various purposes.it gives us light,heat and power we use it at our homes for lightening ,to cook our foods,operate our t.v. or computer or fridge etc.it is also used to heat our houses in winter and operate the machines of various categories.in hot places,we use electric fans,fridge,air-coolersmair-condition.modern era remain incomplet unless electricity contribute to the enhancement of science and technology.beacuse it is used in radio,telephone,lifts,generators t.v.s commputers, washing machines and so on and so forth.
we can have many advantage of electricity.we can do any work quickly and easily.wecan decrease pollution in cities by using electric vehiceles.they are also cheaper than other comman vehicales.the process of deforestation and desertificaion acn be decreased.we we can use electric stove. if we do not need firewood ,the forest can be saved .similarly,we can save other natural ressources such as natural ga ,oil and so on.similarly we can use electric pumps and  motors to irrigate the farms.the water of the river can be taken to the tops of the hills with the helps of electricity.nowadays,ever modern works with the helps of it.

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