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    SOLAR ENERGY - Research & Development
The energy provided from sun is so strong that it can power the entire planet for one year. Surely we are clever enough to capture some of this magnificent force and use it to fuel our environment. Solar energy are divided into two categories, static or passive solar energy and dynamic or kinetic solar energy. An example of passive solar energy could be building a house so that the windows face the morning sun in cold climates. We do not know but our Earth uses the power from sun in many ways. Ours is an inherently rechargeable renewable world, provided we use our resources such as solar energy wisely.

You have probably also been hearing about the "solar revolution" for the last 20 years the idea that one day we will all use free electricity from the sun. This is a seductive promise: On a bright, sunny day, the sun shines approximately 1,000 watts of energy per square meter of the planet's surface, and if we could collect all of that energy into solar cells we could easily power our homes and offices for free.

In this article, we will examine solar cells to learn how they convert the sun's energy directly into electricity. In the process, you will learn why we are getting closer to using the solar energy on a daily basis, and why we still have more research to do before the process becomes cost effective.

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