Solar Energy issued a year, equivalent to the entire planet is now the total energy used by mankind’s 6×105 billion times. The vast majority of these energy radiation to space the solar system. About 2.2 billion one-radiation to the Earth, the planet now equivalent to the total energy used 3 times.

Solar radiation to Earth by the seven colors of light (red, orange, yellow, green, green, blue, purple) composed of various wavelengths of light, of which the maximum energy density is 0.55 micron wavelength region of green light. The chlorophyll green color and the sun is consistent. Therefore, plants capture solar energy to be used as much as possible, to capture the energy near 0.55 microns, of course, very important.

Very far away from the sun as the Earth about 150 million km, while the Earth in space is a tiny planet, so it only accepted the one-sun 2.2 billion light and heat. While the outermost ball was wrapped with a thick layer of the atmosphere. Atmosphere, solar radiation obstruction. Therefore, solar radiation to the earth is very uneven distribution.

1. Before reaching the surface of the Earth: The atmosphere and clouds reflect back solar energy is about 30%, these short-wave energy to return to the original space. In addition, by the atmosphere and clouds absorb solar energy is about 20% of the results, before reaching the earth’s surface, atmosphere and clouds are reflected and absorbed solar energy for all (that is, one in 2.2 billion) of 51%.

2. In the solar energy reaching the earth surface is about 49% of the total, another 2% of the direct reflection from the ground and return to space. The remaining 47% have had radiation to the ground. Use of specialized equipment is now a form of light, can measure the sun’s heat to bring to vostro 1200 battery the ground. When the sun strict vertical radiation around the Earth without the atmosphere and conditions, the measurement result: in one square centimeter of the ground, get 2 cards per minute (more than 8 joules) of energy. After years of measurement, this data has not changed significantly, so the “2 cards” are called “solar constant.”

However, sunlight reaching the earth’s surface and heat, is often affected by changes in the atmosphere changes. For example, sunny, cloudy, the solar energy received on the ground is not the same. In addition, different places on Earth latitude said, suffered light exposure are different. Obtained near the equator the heat more, and in smaller near the poles. The reasons for this difference, one revolution when the axis of the Earth is tilted, and not perpendicular to the orbital plane; Second, the Earth is a sphere. Since these two factors, the sun does not reach all parts of the ground at the same angle in all regions, and thus the difference in size inevitably strength. The same amount of light that shines in the area of the smaller, more focused on its energy, the greater intensity; the contrary, the intensity is smaller. Equatorial region of solar radiation received more than other places, where an area of 1 square meter per minute can be obtained by sun heat to boil 1 cup of water, 1 hectare of land as the average light energy is good enough for launch a nearly 10X106 watts power consumption machine. Earth’s surface about 510 million square kilometers, so that we can easily calculate the annual solar radiation to the Earth’s surface energy. The energy equivalent of 1X107 tons of standard coal energy, a figure higher than a year worldwide, the total energy production by 1.8 times bigger.

We often rely on the sun all things to grow with “all things to grow by the sun” to celebrate the sun’s heat and light, this is because most of the energy on earth ultimately comes from the sun’s thermonuclear reactions release enormous energy. In HP 550 battery addition, there are Earth during the formation of the energy stored by the radiation also comes from the sun.

“The sun is the earth mother,” This is a Western poet, a poem praising the sun. People around the world total compared to the best things that the sun is bright as the sun symbol, which is the energy source of light. Radiance of the sun generous to the space exudes endless light and heat. People chanting “all things to grow by the sun” because the energy needed for growth, both from the sun. Whether human or animals and plants, are inseparable from the sun’s light and heat. What on earth solar energy to play any role? Overall performance is as follows.

1. Radiation on the Earth’s surface about 47% of solar energy as heat is absorbed by land and sea to land and sea warming.

2. With sea water, rivers, lakes and other water evaporation, and rainfall, snowfall is about 23% of the solar energy. As part of these energy rivers of water for hydropower.

3. Can cause the solar wind and waves of about 0.2% of solar radiation due to other renewable energy (such as wind, geothermal, ocean energy, biomass and other clean energy resources available to the earth) provides a very rich resources.

4. We all know, plants use solar energy, water and carbon dioxide for photosynthesis and growth. However, the use of solar power plants is very small, only 0.02% -0.03%. Now we use conventional energy sources such as oil and coal, can be said that after hundreds of millions of years of photosynthesis and accumulated in the solar energy.

5. The sun on the Earth, in addition to light and heat, but also to launch the Earth X-rays, radio waves and solar wind plasma-like particles. And because the sun spot, said, such as Joel and sunspot activity, so that the Earth’s upper atmosphere often surrounding affected.

Currently, the land for the sun to the earth’s energy, according to the current level of skills can be developed only less than one thousandth of use. However, with the rapid development of science and technology of modern solar energy application technology has been given new Satellite P500 battery meaning, applications have been involved in industry, agriculture, construction, aerospace and other industries and sectors, has developed into a wide range of prosperity “name door Han. ” For example, for large-scale public buildings heating, refrigeration, air conditioning and solar energy facilities, solar distillation unit for water desalination, for spacecraft, spacecraft, automobiles, bicycles solar energy, for the seedling, dry, insect and other solar energy equipment for heating, insulation and solar stoves and solar room temperature, are solar energy technology.

All in all, solar energy is inexhaustible and will not cause any pollution, clean energy and renewable energy.