A crash course in changing the world.
During the summer, the weather is so hot. So I think I can use solar energy during the summer.
(Of course like Thailand, we can use this method anythime you want.)
Afternoon, when the temperature becomes the highest, a metal board will absorb the sunlight.
Then it will be really hot in short time and it will produce electricity.
We can use the electricity for air conditioner or oven.