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| − | Solar energy, which is what arises from the heat and light of the sun, is not only free, but its supply is unlimited. [http://general-technology.org/product-review-samsung-un75f8000-led-hdtv/ general technology] In addition, utilizing this energy for human use does not create any pollution, so our fresh air and water remain unaffected. Indirectly there is a somewhat negative result because of the photovoltaic cells used in the process. Certain waste materials result from the silicon implemented in the process of the cells producing electricity from sunlight. Another thing that might be harmful to the environment is the large thermal farms, and if not maintained properly they are bad for the desert ecosystem. Agriculture features solar energy with but one of many potential applications.
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| − | Solar heating stimulates much better growth of greenhouse vegetation. The Roman era observed the introduction of greenhouses, and these exist to this day, many modern European greenhouses having been constructed in the 16th century. [http://general-technology.org/htc-one-vs-iphone-5/ iphone] Always an integral part of horticulture, they always play a defining role. Systems that take advantage of daylight go on to maximise energy from this source. Light from the sun brightens the internal parts of greenhouses, rather than artificial lighting. So long as they are implemented properly, daylight systems can reduce energy usage related to light, by 25 percent. A day light system has a light tube, skylights, saw tooth rooftops, and a light shelf.
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| − | Water distillation can be accomplished with solar energy, and salt water turned into drinking water. There is a process whereby water put into plastic polyethylene terepthalate bottles is cleansed so it can be swallowed, known as SODIS, which stands for solar water disinfection. This is a system that varies depending on environmental conditions, and it can take quite a while. It will require 6 hours minimum when the weather is fine, but when it is overcast the time lengthens to as much as 2 days. In developing nations, there are currently two million people obtaining their daily drinking water using SODIS.
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| − | One of the means whereby electricity is formed from sunlight is called photovoltaic, or PV for short. Little or medium-sized things have been operated by PV. An example of this is a calculator that runs using an individual solar cell. Photovoltaic is actually employed to power some homes. Solar energy's most common uses, though, are the heating of water and the insides of houses. Solar air heating, and likewise ventilation, is becoming more prevalent. Of the three prevalent ways of collecting solar energy, solar cells is the most popular. Known as photovoltaic or photoelectric cells, they change light directly into electrical energy.
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| − | Employing mirrors arrayed in a particular way, incredibly high heat can be generated by solar furnaces. [http://general-technology.org/web-design-tips-that-everybody-should-know-about/ ipad] They are also generally known as solar cookers, and they are designed to cook food in hot countries. Practically nothing is perfect, though, and there's a downside to solar technology. For the duration of the night it doesn't operate, and it can be really expensive to set up, but once the solar energy is accumulated the benefits are worth it.
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