If more energy efficient light bulbs use 20% less energy than conventional light bulbs, then how do they work? Is it still true that heat emits light? - Quora
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Feit Electric 125-Watt Clear BR40 Dimmable Incandescent 120-Volt Infrared Heat Lamp Light Bulb (1-Bulb) 125R40/1/HDRP - The Home Depot
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Old-fashioned light bulbs could be set for comeback after 'light recycling' breakthrough | The Independent | The Independent
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