Halogen bulbs are considered more efficient than regular incandescents because the tungsten filament burns hotter and puts out more light. But to me, it seems that a bulb that burns cooler will be more efficient because it is producing less heat and thus more of its electrical energy is going to produce light, and less is being wasted as heat. In fact, a theoretical 100% efficient light bulb would be at ambient temperature. What am I missing here? Thanks in advance - Brian.
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