Teaching Old-School Light Bulbs a New Trick

What was considered old technology, is new again.

Researchers from MIT took a counterintuitive step in the search for energy efficient illumination: Instead of devising a new means of lighting our living spaces, they resurrected the old, trusty incandescent light bulb. The old bulbs, much maligned for their relative inefficiency as compared to LEDs, were upgraded with new technology that captures and recycles wasted heat, potentially reaching efficiencies four times higher than LEDs.

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