The sun
The sun
*the Sun is the biggest source for the earth,the energy provided in the form of solar heat energy and light energy.*
Heat energy and light energy of the sun can be directly we use.
Solar energy can also be transformed into electric energy and then used to run various electronic equipment daily.
The light energy of the sun can illuminate the earth during the day,light energy can be directly we enjoy.
The earth to be brightly lit,so we don't need to turn on the lights.
Green plants also harness the energy of sunlight to make its food.
The light energy of the sun can also change the first into electricity,the sunlight is changed into electricity by a device called solar cell.
Solar cells made from a sheet of thin silicone.
The top of the sheet it is made from silicone which is a little different with the bottom of the sheet.
When the light of the eyes about it,happens to the electric current flowing through the wire that connects the top with the bottom.
Currently,the solar cells began to moncoba drive the car and airplane flying solar-powered.
The sun's heat energy can be utilized directly,for example as the water heater in the home.
The heat of the sun collected in a tool called solar panelssolar panels are commonly placed on top of the roof of the house.
In that place,solar panels can catch the sun better.
Solar panels composed of a layer of glass,a layer of copper,and pipes.
Layers of glass is the outside (top).
Underneath there is a layer of copper on the black paint.
Copper is a good conductor of heat.
Similarly,the color black is the color of the most powerful absorb heat.
Heat collected this layer will heat up the series of pipes underneath.
Inside this pipe there is a fluid,the fluid that come into heat.