![]() ![]() However, the more energy used the more heat that is produced. The more energy, or watts that run through the tungsten filament, the more light (lumens) is produced. Incandescent light bulbs create light by heating a wire, known as the tungsten filament to a high temperature by running an electric current through it until it glows brightly. One thing remains the same though - a bulb that produces more heat for the same light output is simply less efficient. This may seem like a simple question, but the answer depends on the type of light bulb, as each works slightly differently than another.
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