Electric motor

An electric motor is a device that can transform electrical energy into movement

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Energy resources

Energy sources are natural resources that we can use for generate different forms of energy and we can transform that energy for various purposes. We can classify into two general categories : NON-RENEWABLE ENERGY SOURCES. They come from natural resources that are limite and can be exhausted, and it would take million years to regenerate. They are the most commonly used energy sources. They include fossil fuels and nuclear energy, which u ses radioactive materials, such as uraniumials, such as uranium
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Fluorescent tubes

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Inside a fluorescent tube, there is a metalic filament, normally made of tungsten. There is also an inert gas, such as argon, and a small amount of mercury. When an electric current passes through the filament, electrons are emited  into the inert gas.
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