If you're like most Americans, you probably still have a quite a few incandescent lightbulbs throughout your home. Cheap, effective, and easy to use, incandescent lightbulbs provide the second most used form of lighting in the world today behind fluorescent bulbs. The history of the incandescent light bulb While Thomas Edison typically gets the credit for the invention of incandescent lightbulbs. He was far from the only person involved in their history. Technology and variations over the years include…

What are today's incandescent lightbulbs made of? Lightbulbs are comprised of a base with two metal contacts. These contacts connect to the ends of an electrical circuit and are attached to two stiff wires, which are then attached to a thin tungsten metal filament (about 6.5 feet long and one-hundredth of an inch thick formed into an inch long coil in the typical 60-watt bulb). The filament sits mid-bulb, held up by a glass mounting structure. The wires and filament are then enclosed in a glass bulb filled with an inert gas, such as argon, to reduce the loss of tungsten due to combustion. When connected to a power supply, current flows from one contact to another, through the wires and on to the filament where they heat up, creating visible light. Why they're being phased out Due to the incandescent light bulb's inefficient nature, which gives off 90 percent of energy as heat and only about 10 percent as visible light, it is giving way to the more advanced and efficient technologies cool light sources such as fluorescents and LEDs. The phase out of these bulbs by the government will help consumers:

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