Incandescent Light BulbEdit
This kind of light bulb is usually made of glass with a few gasses besideds air inside it. It obviously used alternating Current, and has a point on the bottom and one the side that electricity can flow through. They use a fillement mad of Tungsten, which heats up, and turns heat energy into light energy, but uses almost half of the power on heat energy. Most Christmas Lights are Incandescent.
Flourescent Light BulbEdit
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