Solar
Power
Solar-cells or "photo-voltaics" do not use a generator; they are the generator. Usually arranged in panels, these devices take advantage of the ability of light to cause a current to flow in some substances. A series of cells are wired together and the current flows from the panel when sunlight strikes it. They produce no pollution when operating, and most scientists predict that the fuel supply will last at least 4 billion years.
Solar panels have been relatively expensive to make, and of course they won't work at night or in foul weather. Some of the processes needed to manufacture them have recently been called into question environmentally. Not all of the sunlight striking a solar cell is converted into electricity, and boosting efficiency has been slow work. Yet, the idea of harnessing all of that free sunlight remains a powerful driver for solar power.
Solar-cells or "photo-voltaics" do not use a generator; they are the generator. Usually arranged in panels, these devices take advantage of the ability of light to cause a current to flow in some substances. A series of cells are wired together and the current flows from the panel when sunlight strikes it. They produce no pollution when operating, and most scientists predict that the fuel supply will last at least 4 billion years.
Solar panels have been relatively expensive to make, and of course they won't work at night or in foul weather. Some of the processes needed to manufacture them have recently been called into question environmentally. Not all of the sunlight striking a solar cell is converted into electricity, and boosting efficiency has been slow work. Yet, the idea of harnessing all of that free sunlight remains a powerful driver for solar power.
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