We have used the Sun for drying clothes and food for thousands of years, but only in recent. We have been able to use it for generating power. I think the solar energy will be widely used in the near future because the nature resource in the earth is decreasing soon. On the other hand, the population in the world is increasing fast. Therefore, human is developing the alternative energy such as solar energy industrial at this age. Now you can see many products around you but not efficiency.
In fact, every minutes, Sun provides enough energy arrive at the Earth to meet our demands for a whole year. If only we could control it properly.that is our final work. That is why that textbook mentioned. Wide use of solar energy to produce electricity is probably decade away. But if we are not keeping progress, we won’t reach that day. Another important thing is the pollution issue. The solar energy is anti-pollution energy. It is benefit for the next generation.
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