Solar energy means to get electric city through the sun light ,and the sun is the source of energy. In 20th century scientist came to know that sunlight is a form of energy .they gave name of solar energy .It is used in a lot of things like produce electricity , cook food and get water boiled , run a car , and in many other things.
History tells that Arab scientist and chemists were fist to make and introduce the solar energy . They developed a simple solar water purification machine in the 1550, which is being used still.
The sun light is 109 times larger then the earth ,its radius is1,392,684 km and the earth radius is less then the sun The earth radius is 12,756 km .
Researchers believe that solar power will supply half of the words largest solar power station in the 2015 which is being process in the Canada. And other big solar power station is being process in the China and Spain they will generate about 2000 megawatts of electricity .
The electric current produce by the straight flow of electron in free are called direct current its abbreviation is DC
The electricity generated by the up and down of electron is called the alternating current AC .
The world ,s largest and biggest thermal power is located in the desert of America MAJAVE ,it is consists of nine small power plants and it is spread over the 16,000 acres of the land of desert .
The temperature of sun ,s is the 10,000 degree centigrade .
The sun only takes the 8 minutes and 19 second to reach the earth .it is amazing .telecommunication satellites roaming the space fulfill their power needs through the solar cells .
The world single unit solar power station is in the final stage of completion in ABU DHABI UAE .It can generate the 100 megawatts electricity and their requirement is 20000 homes in UAE the unites states of the emirates
Today solar power is used in every big hotels, pumps ,houses ,etc .
