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Why The World Needs A Better LED Light Bulb

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LED light bulbs swept in a revolution in safe lighting. But many people still risk fire at home because the bulbs are expensive to manufacture. UJ physics researchers discover they can get double the light intensity in a common light-emitting material. If the material succeeds, electric lighting bills could be much lower for everyone. Credit: Graphic by Therese van Wyk, University of Johannesburg, based on Pixabay images.

 Light bulbs are a big upgrade from fires and candles. Every year, homes in informal settlements burn down in Africa because of fires used for heating and lighting. So electrical light bulbs with filaments brought about a revolution at home and work.

Still, all these options are too hot to handle carelessly. They also give off lots of heat, and light up everything around them with a rosy-tinged hue. In other words, good for romance and atmosphere, but not good for low lighting bills.

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